WO2017202366A1 - 电子膨胀阀及具有其的制冷设备 - Google Patents

电子膨胀阀及具有其的制冷设备 Download PDF

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Publication number
WO2017202366A1
WO2017202366A1 PCT/CN2017/085927 CN2017085927W WO2017202366A1 WO 2017202366 A1 WO2017202366 A1 WO 2017202366A1 CN 2017085927 W CN2017085927 W CN 2017085927W WO 2017202366 A1 WO2017202366 A1 WO 2017202366A1
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WO
WIPO (PCT)
Prior art keywords
valve
electronic expansion
groove
expansion valve
valve seat
Prior art date
Application number
PCT/CN2017/085927
Other languages
English (en)
French (fr)
Inventor
舒小辉
王宇栋
Original Assignee
浙江三花智能控制股份有限公司
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Publication date
Application filed by 浙江三花智能控制股份有限公司 filed Critical 浙江三花智能控制股份有限公司
Priority to KR1020187037229A priority Critical patent/KR20190010632A/ko
Priority to JP2018561243A priority patent/JP6797214B2/ja
Publication of WO2017202366A1 publication Critical patent/WO2017202366A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • 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 the field of refrigeration, and in particular to an electronic expansion valve and a refrigeration apparatus therewith.
  • the electronic expansion valve is mainly composed of a coil and a valve body.
  • the valve body is composed of a valve seat, a valve seat core 1, a first nozzle 3, and a second.
  • the nozzle 4, the outer casing, the rotor member 5, the nut assembly 6, the screw assembly 7, the valve needle 8, and the coil holder are composed of components.
  • the valve needle 8 and the valve seat core 1 are both metal.
  • a primary object of the present invention is to provide an electronic expansion valve and a refrigeration apparatus therewith for solving the problem of high noise of the electronic expansion valve in the prior art.
  • an electronic expansion valve includes: a valve seat; a nut assembly coupled to the valve seat; a screw rod movably disposed within the nut assembly; the valve seat core, Located in the valve seat and having a valve port; the valve needle, the valve needle includes a main body portion that cooperates with the inner wall of the valve seat core, and a needle head located below the main body portion and engaging with the valve port, the valve needle has a closed position for closing the valve port and avoiding The opening position of the valve port, the screw drive valve needle moves between the closed position and the open position; the noise reduction portion includes a first rotation stop portion and a second rotation stop portion that cooperate with each other, the first rotation stop portion and the second stop One of the turns is disposed on the valve seat core or nut assembly and the other is disposed on the body portion.
  • first rotation stop is a first protrusion
  • second rotation stop is a first groove that cooperates with the first protrusion
  • first protrusion is disposed on the nut assembly, and the valve seat core has a notch for avoiding the first protrusion, and the first groove is disposed on the main body portion.
  • the first rotation stop portion is revolved, the side wall of the valve seat core or the valve needle is provided with a mounting portion for mounting the rotation preventing pin, and the second rotation preventing portion is a second groove for engaging the rotation preventing pin.
  • the mounting portion is a mounting hole
  • the axis of the rotation preventing pin is perpendicular to the axis of the valve needle
  • the end of the rotation preventing pin is matched with the second groove.
  • stop pin protrudes from the valve seat core or the height of the valve needle is smaller than the depth of the second groove.
  • the mounting portion is a third groove
  • the axis of the rotation preventing pin is parallel to the axis of the valve needle
  • the rotation preventing pin is partially disposed in the second groove
  • the other portion is disposed in the third groove.
  • the diameter of the stop pin is smaller than the sum of the groove depths of the second groove and the third groove.
  • valve seat core comprises a valve core seat body and a snap ring located above the valve core seat body and independent of the valve core seat body, the first rotation stop portion is disposed on the inner wall of the snap ring, and the first rotation stop portion is The second protrusion is a fourth groove that cooperates with the second protrusion.
  • the height of the second protrusion is smaller than the groove depth of the fourth groove.
  • a refrigeration apparatus including an electronic expansion valve which is the above-described electronic expansion valve.
  • the electronic expansion valve includes a noise reduction portion
  • the noise reduction portion includes a first rotation stop portion and a second rotation stop portion
  • one of the first rotation stop portion and the second rotation stop portion is disposed at the valve seat
  • the core or nut assembly and the other are disposed on the body portion.
  • FIG. 1 is a schematic longitudinal sectional view showing an electronic expansion valve in the prior art
  • Figure 2 is a schematic longitudinal sectional view showing a first embodiment of an electronic expansion valve according to the present invention
  • Figure 3 is a perspective view showing the valve body of the valve of the electronic expansion valve of Figure 2;
  • Figure 4 is a longitudinal sectional perspective view showing the valve seat core of Figure 2;
  • Figure 5 is a front elevational view showing the valve seat core of Figure 4.
  • Figure 6 is a perspective view showing the structure of the anti-rotation pin of the electronic expansion valve of Figure 2;
  • Figure 7 is a schematic longitudinal sectional view showing a second embodiment of an electronic expansion valve according to the present invention.
  • Figure 8 is a perspective view showing the structure of the valve seat core of the electronic expansion valve of Figure 7;
  • Figure 9 is a longitudinal sectional view showing the valve seat core of Figure 8.
  • Figure 10 is a perspective view showing the valve body of Figure 7;
  • Figure 11 is a longitudinal sectional perspective view showing the valve needle of Figure 10;
  • Figure 12 is a perspective view showing the structure of the anti-rotation pin of the electronic expansion valve of Figure 7;
  • Figure 13 is a schematic longitudinal sectional view showing the fourth embodiment of the electronic expansion valve according to the present invention.
  • Figure 14 is a perspective view showing the structure of the snap ring of the electronic expansion valve of Figure 13;
  • Figure 15 is a perspective view showing the valve body of Figure 13;
  • Figure 16 is a schematic longitudinal sectional view showing a fifth embodiment of an electronic expansion valve according to the present invention.
  • Figure 17 is a perspective view showing the nut assembly of the electronic expansion valve of Figure 16;
  • Figure 18 is a schematic longitudinal sectional view showing the nut assembly of Figure 17;
  • Fig. 19 is a perspective view showing the structure of a valve seat core of the electronic expansion valve of Fig. 16.
  • valve seat core 10, valve seat core; 11, valve port; 12, valve core seat body; 13, snap ring; 20, valve needle; 21, body portion; 22, needle head; 31, second groove; 32, mounting hole; 33a, stop pin; 33b, stop pin; 34, third groove; 35, second protrusion; 36, fourth groove; 40, rotor; 50, screw; 60, nut assembly.
  • the electronic expansion valve of the first embodiment includes a valve seat, a nut assembly 60, a lead screw 50, a valve seat core 10, a valve needle 20, and a noise reduction portion.
  • the nut assembly 60 is coupled to the valve seat;
  • the lead screw 50 is movably disposed within the nut assembly 60;
  • the valve seat core 10 is located within the valve seat and has a valve port 11;
  • the valve needle 20 includes mating with the inner wall of the valve seat core 10
  • the main body portion 21 and the needle head 22 located below the main body portion 21 and engaged with the valve port 11, the valve needle 20 has a closed position for closing the valve port 11 and an open position for avoiding the valve port 11, and the screw rod 50 drives the valve needle 20 to be closed.
  • the noise reduction portion includes a first rotation stop portion and a second rotation stop portion that cooperate with each other, and one of the first rotation stop portion and the second rotation stop portion is disposed on the valve seat core 10, and One is disposed on the main body portion 21.
  • the electronic expansion valve includes a noise reduction portion
  • the noise reduction portion includes a first rotation stop portion and a second rotation stop portion
  • one of the first rotation stop portion and the second rotation stop portion is disposed at the valve
  • the other of the core 10 is disposed on the main body portion 21.
  • the electronic expansion valve further includes a coil and a rotor 40.
  • the coil drives the rotor 40 to rotate
  • the lead screw 50 is coupled to the rotor 40
  • the rotor 40 drives the screw 50 to rotate.
  • the nut assembly 60 cooperates with the lead screw 50 to convert the rotational motion of the lead screw 50 into a linear motion.
  • the end of the screw 50 away from the rotor 40 is connected to the valve needle 20 to close the valve needle 20. Move between position and open position.
  • the first rotation stop portion of the rotation pin 33a, the side wall of the valve seat core 10 or the valve needle 20 is provided with a mounting portion for mounting the rotation preventing pin 33a.
  • the second rotation stop portion is a second groove 31 that cooperates with the rotation stop pin 33a.
  • the above-mentioned rotation preventing pin 33a will cooperate with the second groove 31, thereby avoiding the main body portion 21 and the valve.
  • the relative rotation of the core 10 occurs, thereby reducing friction and impact due to relative rotation between the main body portion 21 and the valve seat core 10, reducing noise and increasing comfort.
  • the above structure is simple and easy to process and assemble.
  • the mounting portion is a mounting hole 32, and the axis of the rotation preventing pin 33a is perpendicular to the axis of the valve needle 20, and the main body portion 21 of the valve needle 20 of the electronic expansion valve and the valve
  • the end portion of the rotation preventing pin 33a and the side wall of the second groove 31 cooperate with each other, thereby avoiding the occurrence of relative rotation of the main body portion 21 and the valve seat core 10, thereby reducing the number of rotations. Due to the friction and impact between the main body portion 21 and the valve seat core 10 due to relative rotation, noise is reduced and comfort is increased.
  • the above structure is simple and easy to process and assemble.
  • the above-mentioned rotation preventing pin 33a is fixed in the mounting hole 32 by welding or an adhesive.
  • the rotation preventing pin 33a protrudes from the height of the valve seat core 10 or the valve needle 20 to be smaller than the depth of the second groove 31.
  • the above structure reduces the probability of mutual contact between the end surface of the rotation preventing pin 33a and the bottom surface of the second groove 31, thereby reducing the friction between the end surface of the rotation preventing pin 33a and the bottom surface of the second groove 31. Noise improves the user experience.
  • the electronic expansion valve of the second embodiment differs from the above embodiment in the shape of the rotation preventing pin and the mounting portion fitted thereto.
  • the mounting portion is a third recess 34
  • the axis of the rotation preventing pin 33b is parallel to the axis of the valve needle 20
  • the rotation preventing pin 33b is partially disposed in the second recess 31
  • the other portion is disposed in the second recess 31.
  • the third groove 34 is inside.
  • the side wall of the rotation preventing pin 33b and the side wall of the second groove 31 cooperate with each other, thereby avoiding the main body portion 21 and The relative rotation of the valve seat core 10 occurs, thereby reducing friction and impact due to relative rotation between the main body portion 21 and the valve seat core 10, reducing noise and increasing comfort.
  • the above structure is simple and easy to process and assemble.
  • the above-mentioned rotation preventing pin 33b is fixed in the third recess 34 by welding or an adhesive.
  • the diameter of the rotation preventing pin 33b is smaller than the sum of the groove depths of the second groove 31 and the third groove 34.
  • the above structure reduces the probability of mutual contact between the side wall of the rotation preventing pin 33b and the bottom surface of the second groove 31, thereby reducing the friction between the bottom surface of the second groove 31 of the side wall of the rotation preventing pin 33b.
  • the noise improves the user experience.
  • the electronic expansion valve of the third embodiment differs from the first embodiment in the specific structure of the noise reduction portion.
  • the first rotation stop is a first protrusion
  • the second rotation stop is a first groove that cooperates with the first protrusion.
  • the first projection is disposed on the main body portion 21, and the first recess is disposed on the valve seat core 10 as an example for explanation.
  • the side walls cooperate with each other, and the side wall of the first groove acts as a stop for the side wall of the first protrusion, thereby avoiding the relative rotation of the main body portion 21 and the valve seat core 10, thereby reducing the main body
  • the friction and impact between the portion 21 and the valve seat core 10 due to relative rotation reduce noise and increase comfort.
  • the first bump can also
  • the first recess is disposed on the main body portion 21, and the first protrusion and the first recess are matched in the same manner as described above, and details are not described herein again.
  • the projections and grooves have a simple structure and are easy to process.
  • the height of the first protrusion is smaller than the depth of the first groove.
  • the electronic expansion valve of the fourth embodiment differs from the third embodiment in the specific structure of the valve seat core 10.
  • the valve seat core 10 includes a valve core seat body 12 and a snap ring 13 located above the valve core seat body 12 and independent of the valve core seat body 12, and the first rotation stop portion is disposed on the snap ring On the inner wall of the first wall, the first rotation stop is a second projection 35, and the second rotation stop is a fourth recess 36 that cooperates with the second projection 35.
  • the above structure has two advantages: on the one hand, when the main body portion 21 of the valve needle 20 of the electronic expansion valve and the valve seat core 10 are relatively rotated, the side wall of the second protrusion 35 and the fourth groove 36 are The side walls will cooperate with each other, thereby avoiding the relative rotation of the main body portion 21 and the valve seat core 10, thereby reducing the friction and impact between the main body portion 21 and the valve seat core 10 due to relative rotation, and reducing The noise increased the comfort.
  • the above structure is simple and easy to process and assemble.
  • the height of the second protrusion 35 is smaller than the groove depth of the fourth groove 36.
  • the above structure reduces the probability of mutual contact between the top surface of the second protrusion 35 and the bottom surface of the fourth groove 36, thereby reducing the mutual relationship between the top surface of the second protrusion 35 and the bottom surface of the fourth groove 36.
  • the noise generated by friction improves the user experience.
  • the electronic expansion valve of the fifth embodiment differs from the third embodiment in the position of the first rotation preventing portion.
  • the first rotation stop portion is a first protrusion
  • the second rotation stop portion is a first groove that cooperates with the first protrusion.
  • the first projection is disposed on the nut assembly 60
  • the first recess is disposed on the main body portion 21, and the valve seat core 10 has a notch that avoids the first projection.
  • the first protrusion cooperates with the first groove through the notch.
  • the side wall of the first projection on the nut assembly 60 will be the side of the first groove on the main body portion 21.
  • the walls cooperate with each other, and the side walls of the first recess act as a stop for the side walls of the first projection, thereby avoiding the relative rotation of the main body portion 21 and the nut assembly 60. Since the nut assembly 60 and the valve seat core 10 are relatively stationary, the above structure avoids relative rotation between the main body portion 21 and the valve seat core 10, thereby reducing the relative rotation between the main body portion 21 and the valve seat core 10 due to relative rotation. Friction and impact reduce noise and increase comfort.
  • first protrusion can also be disposed on the main body portion 21, and the first recess is disposed on the nut assembly 60.
  • the manner in which the first protrusion and the first recess are matched is the same as that described above, and details are not described herein again.
  • the height of the first protrusion is smaller than the sum of the radial depth of the notch avoiding the first protrusion and the depth of the first groove.
  • the upper end of the valve seat core 10 is fitted into the lower end of the nut assembly 60, that is, the nut assembly is set in the valve seat core.
  • the outer diameter of the lower end portion of the nut assembly 60 can be set to match the inner diameter of the upper end portion of the valve seat core 10, that is, the lower end portion of the nut assembly 60 is fitted to the upper end portion of the valve seat core 10.
  • the inside so that when the first rotation stop is the first projection, It is also possible to provide a nut assembly 60 that cooperates with a first recess provided in the body portion 21 to achieve the desired technical effects of the present invention.
  • a refrigeration apparatus comprising: an electronic expansion valve, the electronic expansion valve being the above-described electronic expansion valve. Since the electronic expansion valve has the advantage of low noise, the refrigeration apparatus having the electronic expansion valve also has the above advantages.

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

Abstract

一种电子膨胀阀，包括：阀座；连接在阀座上的螺母组件（60）；可移动地设置在螺母组件内的丝杆（50）；位于阀座内并具有阀口（11）的阀座芯（10）；阀针（20），阀针包括与阀座芯的内壁配合的主体部（21）以及位于主体部下方并与阀口配合的针头部（22），阀针具有封闭阀口的关闭位置以及避让阀口的开启位置；降噪部，其包括相互配合的第一止转部和第二止转部，第一止转部和第二止转部中的一个设置在阀座芯或螺母组件上，另一个设置在主体部上。第一止转部和第二止转部相互配合，减小了主体部和阀座芯之间由于相互转动所产生的摩擦和撞击，减小了噪音。还提供了具有电子膨胀阀的制冷设备。

Description

电子膨胀阀及具有其的制冷设备 技术领域
本发明涉及制冷领域，具体而言，涉及一种电子膨胀阀及具有其的制冷设备。
背景技术
在制冷领域会使用到一种电子膨胀阀，如图1所示，该电子膨胀阀主要由线圈和阀体构成，其中，阀体由阀座、阀座芯1、第一接管3、第二接管4、外壳、转子部件5、螺母组件6、丝杆组件7、阀针8以及线圈固定架等部件组成。在现有结构中，阀针8和阀座芯1都是金属。当电子膨胀阀工作时，阀针8在阀座芯1内孔中来回转动。在电子膨胀阀不断的开阀和闭阀过程中，阀针8外圆和阀座芯1内孔之间可能产生摩擦和撞击，会发出相应的声响，产生噪音。特别是当膨胀阀安装在室内机中时，会增加系统噪音，进而影响空调的舒适性。
发明内容
本发明的主要目的在于提供一种电子膨胀阀及具有其的制冷设备，以解决现有技术中的电子膨胀阀噪音大的问题。
为了实现上述目的，根据本发明的一个方面，提供了一种电子膨胀阀，包括：阀座；螺母组件，连接在阀座上；丝杆，可移动地设置在螺母组件内；阀座芯，位于阀座内并具有阀口；阀针，阀针包括与阀座芯的内壁配合的主体部以及位于主体部下方并与阀口配合的针头部，阀针具有封闭阀口的关闭位置以及避让阀口的开启位置，丝杆驱动阀针在关闭位置与开启位置之间移动；降噪部，包括相互配合的第一止转部及第二止转部，第一止转部和第二止转部中的一个设置在阀座芯或螺母组件上，另一个设置在主体部上。
进一步地，第一止转部为第一凸起，第二止转部为与第一凸起配合的第一凹槽。
进一步地，第一凸起设置在螺母组件上，阀座芯具有避让第一凸起的缺口，第一凹槽设置在主体部上。
进一步地，第一凸起和第一凹槽之间具有间隙。
进一步地，第一止转部为止转销，阀座芯的侧壁上或者阀针上设置有用于安装止转销的安装部，第二止转部为与止转销配合的第二凹槽。
进一步地，安装部为安装孔，止转销的轴线与阀针的轴线垂直，止转销的端部与第二凹槽相配合。
进一步地，止转销突出于阀座芯或者阀针的高度小于第二凹槽的深度。
进一步地，安装部为第三凹槽，止转销的轴线与阀针的轴线平行，止转销一部分设置于第二凹槽内，另一部分设置于第三凹槽内。
进一步地，止转销的直径小于第二凹槽与第三凹槽的槽深之和。
进一步地，阀座芯包括阀芯座本体及位于阀芯座本体的上方并独立于阀芯座本体的卡环，第一止转部设置在卡环的内壁上，第一止转部为第二凸起，第二止转部为与第二凸起配合的第四凹槽。
进一步地，第二凸起的高度小于第四凹槽的槽深。
根据本发明的另一方面，提供了一种制冷设备，包括电子膨胀阀，电子膨胀阀为上述的电子膨胀阀。
应用本发明的技术方案，电子膨胀阀包括降噪部，上述降噪部包括第一止转部及第二止转部，第一止转部和第二止转部中的一个设置在阀座芯或螺母组件上，另一个设置在主体部上。当电子膨胀阀的丝杆驱动阀针在开启位置和关闭位置之间来回移动时，第一止转部和第二止转部能够相互配合，避免了阀针的主体部与阀座芯相对转动的情况发生，从而减小了主体部与阀座芯之间由于相对转动所产生的摩擦和撞击，减小了噪音，增加了舒适度，进而解决了电子膨胀阀噪音大的问题。
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发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1示出了现有技术中电子膨胀阀的纵剖结构示意图；
图2示出了根据本发明的电子膨胀阀的实施例一的纵剖结构示意图；
图3示出了图2的电子膨胀阀的阀针的立体结构示意图；
图4示出了图2的阀座芯的纵剖立体结构示意图；
图5示出了图4的阀座芯的主视示意图；
图6示出了图2的电子膨胀阀的止转销的立体结构示意图；
图7示出了根据本发明的电子膨胀阀的实施例二的纵剖结构示意图；
图8示出了图7的电子膨胀阀的阀座芯的立体结构示意图；
图9示出了图8的阀座芯的纵剖结构示意图；
图10示出了图7的阀针的立体结构示意图；
图11示出了图10的阀针的纵剖立体结构示意图；
图12示出了图7的电子膨胀阀的止转销的立体结构示意图；
图13示出了根据本发明的电子膨胀阀的实施例四的纵剖结构示意图；
图14示出了图13的电子膨胀阀的卡环的立体结构示意图；
图15示出了图13阀针的立体结构示意图；
图16示出了根据本发明的电子膨胀阀的实施例五的纵剖结构示意图；
图17示出了图16的电子膨胀阀的螺母组件的立体结构示意图；
图18示出了图17的螺母组件的纵剖结构示意图；以及
图19示出了图16的电子膨胀阀的阀座芯的立体结构示意图。
其中，上述附图包括以下附图标记：
10、阀座芯；11、阀口；12、阀芯座本体；13、卡环；20、阀针；21、主体部；22、针头部；31、第二凹槽；32、安装孔；33a、止转销；33b、止转销；34、第三凹槽；35、第二凸起；36、第四凹槽；40、转子；50、丝杆；60、螺母组件。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
如图2至图6所示，实施例一的电子膨胀阀包括阀座、螺母组件60、丝杆50、阀座芯10、阀针20以及降噪部。其中，螺母组件60连接在阀座上；丝杆50可移动地设置在螺母组件60内；阀座芯10位于阀座内并具有阀口11；阀针20包括与阀座芯10的内壁配合的主体部21以及位于主体部21下方并与阀口11配合的针头部22，阀针20具有封闭阀口11的关闭位置以及避让阀口11的开启位置，丝杆50驱动阀针20在关闭位置与开启位置之间移动；降噪部包括相互配合的第一止转部及第二止转部，第一止转部和第二止转部中的一个设置在阀座芯10上，另一个设置在主体部21上。
应用实施例一的技术方案，电子膨胀阀包括降噪部，上述降噪部包括第一止转部及第二止转部，第一止转部和第二止转部中的一个设置在阀座芯10上，另一个设置在主体部21上。当电子膨胀阀的丝杆50驱动阀针20在开启位置和关闭位置之间来回移动时，第一止转部和第二止转部能够相互配合，避免了阀针20的主体部21与阀座芯10相对转动的情况发生，从而减小了主体部21与阀座芯10之间由于相对转动所产生的摩擦和撞击，减小了噪音，增加了舒适度，进而解决了电子膨胀阀噪音大的问题。
需要说明的是，在实施例一中，电子膨胀阀还包括线圈、转子40。线圈驱动转子40转动，丝杆50与转子40连接，转子40驱动丝杆50转动。螺母组件60与丝杆50配合，将丝杆50的旋转运动转化为直线运动。丝杆50远离转子40的一端与阀针20连接，以使阀针20关闭 位置与开启位置之间移动。如图2至图6所示，在实施例一中，第一止转部为止转销33a，阀座芯10的侧壁上或者阀针20上设置有用于安装止转销33a的安装部，第二止转部为与止转销33a配合的第二凹槽31。一方面，当电子膨胀阀的阀针20的主体部21与阀座芯10产生相对转动的趋势时，上述止转销33a将与第二凹槽31相互配合，从而避免了主体部21与阀座芯10相对转动的情况发生，进而减小了由于主体部21与阀座芯10之间由于相对转动所产生的摩擦和撞击，减小了噪音，增加了舒适度。另一方面，上述结构简单，易于加工和装配。
如图2至图6所示，在实施例一中，安装部为安装孔32，止转销33a的轴线与阀针20的轴线垂直，当电子膨胀阀的阀针20的主体部21与阀座芯10产生相对转动的趋势时，止转销33a的端部与第二凹槽31的侧壁相互配合，从而避免了主体部21与阀座芯10相对转动的情况发生，进而减小了由于主体部21与阀座芯10之间由于相对转动所产生的摩擦和撞击，减小了噪音，增加了舒适度。另一方面，上述结构简单，易于加工和装配。优选地，上述止转销33a通过焊接或是粘结剂固定在安装孔32内。
如图2至图6所示，在实施例一中，止转销33a突出于阀座芯10或者阀针20的高度小于第二凹槽31的深度。上述结构减小了止转销33a的端面与第二凹槽31的底面之间相互接触的几率，从而减小了由于止转销33a的端面与第二凹槽31的底面相互摩擦而产生的噪音，改善了用户使用感受。
如图7至图12所示，实施例二的电子膨胀阀与上述实施例的区别在于止转销以及与其配合的安装部的形状。具体地，在实施例二中，安装部为第三凹槽34，止转销33b的轴线与阀针20的轴线平行，止转销33b一部分设置于第二凹槽31内，另一部分设置于第三凹槽34内。当电子膨胀阀的阀针20的主体部21与阀座芯10产生相对转动的趋势时，止转销33b的侧壁与第二凹槽31的侧壁相互配合，从而避免了主体部21与阀座芯10相对转动的情况发生，进而减小了由于主体部21与阀座芯10之间由于相对转动所产生的摩擦和撞击，减小了噪音，增加了舒适度。另一方面，上述结构简单，易于加工和装配。优选地，上述止转销33b通过焊接或是粘结剂固定在第三凹槽34内。
如图7至图12所示，在实施例二中，止转销33b的直径小于第二凹槽31与第三凹槽34的槽深之和。上述结构减小了止转销33b的侧壁与第二凹槽31的底面之间相互接触的几率，从而减小了由于止转销33b的侧壁第二凹槽31的底面相互摩擦而产生的噪音，改善了用户使用感受。
实施例三的电子膨胀阀(图中未示出)与实施例一的区别在于降噪部的具体结构。具体地，第一止转部为第一凸起，第二止转部为与第一凸起配合的第一凹槽。下面以第一凸起设置在主体部21上，第一凹槽设置在阀座芯10上为例进行说明。当电子膨胀阀的阀针20的主体部21与阀座芯10产生相对转动的趋势时，主体部21上的第一凸起的侧壁将会与阀座芯10上的第一凹槽的侧壁相互配合，第一凹槽的侧壁对第一凸起的侧壁起到了止挡的作用，从而避免了主体部21与阀座芯10相对转动的情况发生，进而减小了由于主体部21与阀座芯10之间由于相对转动所产生的摩擦和撞击，减小了噪音，增加了舒适度。当然，第一凸起还可 以设置在阀座芯10上，第一凹槽设置在主体部21上，第一凸起和第一凹槽配合的方式与上述配合方式相同，在此不再赘述。另外，凸起和凹槽的结构简单，易于加工。
在实施例三中，第一凸起的高度小于第一凹槽的深度。上述结构减小了第一凸起的顶面与第一凹槽的底面之间相互接触的几率，从而减小了由于第一凸起的顶面与第一凹槽相互摩擦而产生的噪音，改善了用户使用感受。
如图13至图15所示，实施例四的电子膨胀阀与实施例三的区别在于阀座芯10的具体结构。具体地，在实施例四中，阀座芯10包括阀芯座本体12及位于阀芯座本体12的上方并独立于阀芯座本体12的卡环13，第一止转部设置在卡环13的内壁上，第一止转部为第二凸起35，第二止转部为与第二凸起35配合的第四凹槽36。上述结构具有两方面优点：一方面，当电子膨胀阀的阀针20的主体部21与阀座芯10产生相对转动的趋势时，上述第二凸起35的侧壁与上述第四凹槽36的侧壁将相互配合，从而避免了主体部21与阀座芯10相对转动的情况发生，进而减小了主体部21与阀座芯10之间由于相对转动所产生的摩擦和撞击，减小了噪音，增加了舒适度。另一方面，上述结构简单，易于加工和装配。
如图13至图15所示，实施例四中，第二凸起35的高度小于第四凹槽36的槽深。上述结构减小了第二凸起35的顶面与第四凹槽36的底面之间相互接触的几率，从而减小了由于第二凸起35的顶面与第四凹槽36的底面相互摩擦而产生的噪音，改善了用户使用感受。
如图16至图19所示，实施例五的电子膨胀阀与实施例三的区别在于第一止转部的位置。具体地，在实施例五中，第一止转部为第一凸起，第二止转部为与第一凸起配合的第一凹槽。第一凸起设置在螺母组件60上，第一凹槽设置在主体部21上，阀座芯10具有避让第一凸起的缺口。第一凸起穿过上述缺口与第一凹槽相配合。当电子膨胀阀的阀针20的主体部21与阀座芯10产生相对转动的趋势时，螺母组件60上的第一凸起的侧壁将会与主体部21上的第一凹槽的侧壁相互配合，第一凹槽的侧壁对第一凸起的侧壁起到了止挡的作用，从而避免了主体部21与螺母组件60相对转动的情况发生。由于螺母组件60与阀座芯10相对静止，因此，上述结构避免了主体部21与阀座芯10之间相对转动，进而减小了主体部21与阀座芯10之间由于相对转动所产生的摩擦和撞击，减小了噪音，增加了舒适度。当然，第一凸起还可以设置在主体部21上，第一凹槽设置在螺母组件60上，第一凸起和第一凹槽配合的方式与上述配合方式相同，在此不再赘述。
优选地，实施例五中，第一凸起和第一凹槽之间具有间隙，即第一凸起的高度小于避让第一凸起的缺口的径向深度与第一凹槽的深度之和。上述结构减小了第一凸起的顶面与第一凹槽的底面之间相互接触的几率，从而减小了由于第一凸起的顶面与第一凹槽相互摩擦而产生的噪音，改善了用户使用感受。
在上述实施例中，在螺母组件60与阀座芯10之间的配合关系上，都是采用将阀座芯10的上端装入螺母组件60的下端的方式，即螺母组件套装在阀座芯的外部。除了这种配合方式之外，还可以将螺母组件60的下端部的外径设置成与阀座芯10上端部的内径相匹配，即使得螺母组件60的下端部套装于阀座芯10上端部的内部，这样，第一止转部为第一凸起时， 同样可以设置在螺母组件60上，与设置在主体部21上的第一凹槽相配合，以实现本发明预期的技术效果。
在本申请中，还提供了一种制冷设备，根据本申请的制冷设备(图中未示出)包括：电子膨胀阀，电子膨胀阀为上述的电子膨胀阀。由于电子膨胀阀具有噪音小的优点，因此具有该电子膨胀阀的制冷设备也具有上述优点。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (12)

  1. 一种电子膨胀阀，其特征在于，包括：
    阀座；
    螺母组件(60)，连接在所述阀座上；
    丝杆(50)，可移动地设置在所述螺母组件(60)内；
    阀座芯(10)，位于所述阀座内并具有阀口(11)；
    阀针(20)，所述阀针(20)包括与所述阀座芯(10)的内壁配合的主体部(21)以及位于所述主体部(21)下方并与所述阀口(11)配合的针头部(22)，所述阀针(20)具有封闭所述阀口(11)的关闭位置以及避让所述阀口(11)的开启位置，所述丝杆(50)驱动所述阀针(20)在所述关闭位置与所述开启位置之间移动；
    降噪部，包括相互配合的第一止转部及第二止转部，所述第一止转部和所述第二止转部中的一个设置在所述阀座芯(10)或所述螺母组件(60)上，另一个设置在所述主体部(21)上。
  2. 根据权利要求1所述的电子膨胀阀，其特征在于，所述第一止转部为第一凸起，所述第二止转部为与所述第一凸起配合的第一凹槽。
  3. 根据权利要求2所述的电子膨胀阀，其特征在于，所述第一凸起设置在所述螺母组件(60)上，所述阀座芯(10)具有避让所述第一凸起的缺口，所述第一凹槽设置在所述主体部(21)上。
  4. 根据权利要求2或3所述的电子膨胀阀，其特征在于，所述第一凸起和所述第一凹槽之间具有间隙。
  5. 根据权利要求1所述的电子膨胀阀，其特征在于，所述第一止转部为止转销，所述阀座芯(10)的侧壁上或者所述阀针(20)上设置有用于安装所述止转销的安装部，所述第二止转部为与所述止转销配合的第二凹槽(31)。
  6. 根据权利要求5所述的电子膨胀阀，其特征在于，所述安装部为安装孔(32)，所述止转销的轴线与所述阀针(20)的轴线垂直，所述止转销的端部与所述第二凹槽(31)相配合。
  7. 根据权利要求6所述的电子膨胀阀，其特征在于，所述止转销突出于所述阀座芯(10)或者所述阀针(20)的高度小于所述第二凹槽(31)的深度。
  8. 根据权利要求5所述的电子膨胀阀，其特征在于，所述安装部为第三凹槽(34)，所述止转销的轴线与所述阀针(20)的轴线平行，所述止转销一部分设置于所述第二凹槽(31)内，另一部分设置于所述第三凹槽(34)内。
  9. 根据权利要求8所述的电子膨胀阀，其特征在于，所述止转销的直径小于所述第二凹槽(31)与所述第三凹槽(34)的槽深之和。
  10. 根据权利要求1所述的电子膨胀阀，其特征在于，所述阀座芯(10)包括阀芯座本体(12)及位于所述阀芯座本体(12)的上方并独立于所述阀芯座本体(12)的卡环(13)，所述第一止转部设置在所述卡环(13)的内壁上，所述第一止转部为第二凸起(35)，所述第二止转部为与所述第二凸起(35)配合的第四凹槽(36)。
  11. 根据权利要求10所述的电子膨胀阀，其特征在于，所述第二凸起(35)的高度小于所述第四凹槽(36)的槽深。
  12. 一种制冷设备，包括电子膨胀阀，其特征在于，所述电子膨胀阀为权利要求1至11中任一项所述的电子膨胀阀。
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