WO2018177284A1 - 电子膨胀阀及具有其的制冷系统 - Google Patents

电子膨胀阀及具有其的制冷系统 Download PDF

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Publication number
WO2018177284A1
WO2018177284A1 PCT/CN2018/080669 CN2018080669W WO2018177284A1 WO 2018177284 A1 WO2018177284 A1 WO 2018177284A1 CN 2018080669 W CN2018080669 W CN 2018080669W WO 2018177284 A1 WO2018177284 A1 WO 2018177284A1
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WO
WIPO (PCT)
Prior art keywords
electronic expansion
expansion valve
insulating cover
control board
valve according
Prior art date
Application number
PCT/CN2018/080669
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English (en)
French (fr)
Inventor
舒小辉
Original Assignee
浙江三花智能控制股份有限公司
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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 JP2019553218A priority Critical patent/JP6850359B2/ja
Publication of WO2018177284A1 publication Critical patent/WO2018177284A1/zh

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    • 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
    • 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
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/56—Insulating bodies

Definitions

  • the present invention relates to the field of refrigeration, and in particular to an electronic expansion valve and a refrigeration system therewith.
  • the deceleration type electronic expansion valve for an inverter air conditioner is mainly composed of two parts, one part is a valve body part for flow rate adjustment, and the other part is a coil part for driving.
  • the coil part comprises: a permanent magnet type stepping motor 1, a gear reducer 2 with three stages of deceleration 2, a threaded substructure 5 having a vertical movement for converting the rotary motion of the motor into the screw rod 3, the valve body comprising a valve seat 10', and
  • the core member such as the bellows 7 that controls the rise and fall of the needle 8 is formed.
  • the electronic controller of the air conditioning system controls the output shaft of the stepping motor 1 of the electronic expansion valve to rotate, and the motor 1 and the gear reducer 2 cooperate to drive the output shaft of the gear reducer 2 to rotate.
  • the output shaft of the gear reducer 2 cooperates with the screw rod to drive the screw rod to rotate, and then the screw rod cooperates with the thread pair structure 5 to enable the screw rod to move up and down.
  • a steel ball 11' is welded to the tip end of the lead screw, and a bushing 6 is provided at the lower end of the steel ball 11'.
  • the valve pin 8 is connected to the lower end of the bushing 6.
  • valve needle 8 When the lead screw is driven to move downward by the driving member, the screw rod will bear against the steel ball 11', and the steel ball 11' bears against the bushing 6, and the bushing 6 bears against the valve needle 8 so that the valve needle 8 can be synchronized with the screw rod
  • the movement is continued until the valve needle 8 is in the closed position, that is, the position at which the valve needle 8 abuts against the valve body 10'.
  • the valve needle 8 is in the closed position, the bellows 7 is in a continuously stretched state.
  • the reverse pulse is applied, the screw rod 3 moves upward, and the valve needle 8 continuously moves upward under the return elastic force of the bellows 7 and the system pressure, thereby changing the opening degree of the valve port 9, so that the flow area changes and the control is achieved.
  • the above lightning strike phenomenon may be due to lightning strike.
  • the phenomenon caused by the phenomenon may also be caused by an arc generated between the circuit board 12' and the stepping motor 1 when a large voltage is applied instantaneously, resulting in disturbance of the control system and malfunction.
  • a primary object of the present invention is to provide an electronic expansion valve and a refrigeration system therewith for solving the problem that the electronic expansion valve of the prior art is prone to lightning strike.
  • an electronic expansion valve includes: a valve body; a valve needle movably disposed in the valve body; a driving portion that drives the valve needle to move; and a control portion that passes The lead wire is electrically connected to the external device to control the action of the driving portion; the first insulating structure is located at the junction of the control portion and the lead wire, and isolates the connection portion from the driving portion.
  • the first insulating structure is a first insulating cover
  • the control portion includes a control board connected to the lead wire
  • the first insulating cover is disposed on a side of the control board near the driving portion.
  • a first receiving groove for accommodating the control panel is disposed on a side of the first insulating cover facing the control board.
  • a second receiving groove for accommodating the lead wire is further disposed on a side of the first insulating cover facing the control board, and the second receiving groove is located at one side of the first receiving groove and communicates with the first receiving groove.
  • the electronic expansion valve further includes: a driving portion housing disposed outside the driving portion and the control portion; and a second insulating structure between the control portion and the inner wall of the driving portion housing.
  • the first insulation structure is a first insulation cover
  • the second insulation structure is a second insulation cover
  • the control part includes a control board connected to the lead wire
  • the first insulation cover is disposed on a side of the control board near the driving part
  • second The insulating cover is disposed on a side of the control board away from the driving portion.
  • a third receiving groove for accommodating the control panel is disposed on a side of the second insulating cover facing the control board.
  • a fourth receiving groove for accommodating the lead wire is further disposed on a side of the second insulating cover facing the control board, and the fourth receiving groove is located at one side of the third receiving groove and communicates with the third receiving groove.
  • first insulating cover is engaged with the second insulating cover to be wrapped on the outer side of the control board.
  • the height of the first insulating cover is not lower than the height of the second insulating cover.
  • the electronic expansion valve further includes: a transmission receiving box connected to the driving part housing, having a relief hole for avoiding the lead, the first insulating cover being engaged with the second insulating cover and being sealed in the escape hole.
  • the relief hole is a stepped hole
  • a first boss is disposed in a middle portion of the first insulating cover
  • a second boss is disposed in a middle portion of the second insulating cover.
  • first insulation structure and the second insulation structure are a unitary structure.
  • a refrigeration system comprising: an electronic expansion valve, the electronic expansion valve being the electronic expansion valve described above.
  • an electronic expansion valve includes: a valve body; a valve needle movably disposed in the valve body; a driving portion that drives the valve needle to move; and a control portion electrically connected to the external device through the lead wire The connection is controlled to control the driving portion; the first insulating structure is located between the control portion and the driving portion, and the connection between the control portion and the lead is isolated from the driving portion.
  • a refrigeration system comprising: an electronic expansion valve, the electronic expansion valve being the electronic expansion valve described above.
  • the electronic expansion valve includes a first insulation structure, and the first insulation structure is located between the connection portion of the control portion and the lead wire and the driving portion.
  • the first insulating structure is disposed between the connection portion of the control portion and the lead wire and the driving portion to increase the insulation distance, thereby reducing the probability of occurrence of a lightning strike phenomenon, thereby reducing the probability of occurrence of a malfunction of the refrigeration system.
  • FIG. 1 is a schematic longitudinal sectional view showing an electronic expansion valve of the prior art
  • Figure 2 is a schematic longitudinal sectional view showing an embodiment of an electronic expansion valve according to the present invention.
  • Figure 3 is a partial perspective view showing the electronic expansion valve of Figure 2;
  • Figure 4 is a partial longitudinal sectional structural view showing the electronic expansion valve of Figure 2;
  • Figure 5 is a perspective view showing the first insulating structure of the electronic expansion valve of Figure 2;
  • FIG. 6 is a perspective structural schematic view showing a second insulation structure of the electronic expansion valve of FIG. 2;
  • Figure 7 is a perspective view showing the structure of the control board, the lead and the terminal of the electronic expansion valve of Figure 2;
  • FIG. 8 is a schematic perspective structural view showing a control board, a lead, and a terminal of the electronic expansion valve of FIG. 2 mated with a first insulating structure;
  • FIG. 9 is a perspective view showing the structure of the control board, the lead, the first insulating structure and the second insulating structure of the electronic expansion valve of FIG.
  • valve body 10, valve body; 20, valve needle; 30, driving portion; 40, control portion; 50, lead; 60, first insulating structure; 61, first receiving groove; 62, second receiving groove; a second insulating structure; 71, a third receiving groove; 72, a fourth receiving groove; 80, a transmission receiving box; 90, a platform; 91, a first boss; 92, a second boss; ;110, terminal.
  • the electronic expansion valve of the first embodiment includes a valve body 10, a valve needle 20, a driving portion 30, a control portion 40, and a first insulating structure 60.
  • the valve needle 20 is movably disposed in the valve body 10; the driving portion 30 drives the valve needle 20 to move; the control portion 40 is electrically connected to the external device through the lead wire 50 to control the action of the driving portion 30; the first insulating structure 60 is located between the control unit 40 and the drive unit 30, and isolates the connection between the control unit 40 and the lead 50 from the drive unit 30.
  • joining point refers to a portion to be connected between the control unit 40 and the lead wire 50 and a region in the vicinity of the portion.
  • the electronic expansion valve includes a first insulating structure 60, and the first insulating structure 60 is located between the connection portion of the control portion 40 and the lead 50 and the driving portion 30.
  • the first insulating structure 60 is disposed between the connection portion of the control portion 40 and the lead 50 and the driving portion 30 so that the insulation distance is increased, thereby reducing the probability of occurrence of a lightning strike phenomenon, thereby reducing the occurrence of a refrigeration system error. The probability of operating the phenomenon solves the problem that the electronic expansion valve in the prior art is prone to lightning strike phenomenon.
  • the first insulating structure 60 is located at the junction of the control portion 40 and the lead 50 and isolates the joint from the drive portion 30.
  • the control portion 40 includes a control board connected to the lead wire 50, and the lead wire 50 is welded to the surface of the control board near the driving portion 30. Since there is a solder joint in the solder, the solder joint has a certain height, so the distance between the highest point of the solder bump and the driving portion 30 may be less than a predetermined insulating distance, thereby causing a lightning strike phenomenon. Therefore, it is necessary to increase the provision of the first insulating structure 60 to increase the insulation distance.
  • the first insulating structure 60 is a first insulating cover
  • the control portion 40 includes a control board connected to the lead 50.
  • the first insulating cover is disposed on the control board near the driving portion 30.
  • One side. The above structure can cover the area of the control board having solder joints, thereby further reducing the probability of occurrence of a lightning strike.
  • the above structure is simple and easy to process and assemble.
  • the electronic expansion valve further includes: a drive unit housing 100.
  • the drive unit housing 100 is disposed outside the drive unit 30 and the control unit 40.
  • the above structure can prevent outside air, dust, moisture, and the like from coming into contact with the control portion 40, thereby ensuring the service life of the control portion. Since the metal structure is also present on the surface of the control board away from the driving portion 30, a lightning strike phenomenon may also occur between the control board and the driving portion housing 100.
  • the electronic expansion valve further includes: a second insulation structure 70.
  • the second insulating structure 70 is located between the control portion 40 and the inner wall of the driving portion housing 100. The above structure increases the insulation distance between the metal structure on the control portion and the drive portion housing 100, thereby reducing the probability of occurrence of a lightning strike phenomenon.
  • the second insulating structure 70 is a second insulating cover, and the second insulating cover is disposed on a side of the control board away from the driving portion 30.
  • the above structure can cover the area of the control board having the metal structure, thereby further reducing the probability of occurrence of a lightning strike.
  • the above structure is simple and easy to process and assemble.
  • the electronic expansion valve further includes a transmission housing case 80 connected to the drive unit housing 100.
  • the transmission mechanism housing box 80 has a relief hole for avoiding the lead wires 50.
  • the transmission mechanism is housed in the transmission housing 80.
  • the driving portion housing 100 is disposed on the upper portion of the transmission receiving case 80, and the avoidance hole penetrates the upper surface and the lower surface of the transmission receiving case 80, and the lead wire 50 is disposed in the escape hole and is located in the driving
  • the control board within the housing 100 is soldered.
  • the drive unit housing 100 does not completely wrap the transmission housing 80, external air, dust, moisture, and the like may enter through the end of the escape hole away from the drive unit housing 100, and come into contact with the control board, resulting in shortened life of the control board. .
  • the first insulating cover and the second insulating cover are fastened together and then sealed in the escape hole. The above structure can reduce the probability of the outside air, dust, water vapor, etc. contacting the control panel.
  • the relief hole is a stepped hole
  • a first boss 91 is disposed in a middle portion of the first insulating cover
  • a second boss is disposed in a middle portion of the second insulating cover.
  • the first boss 91 and the second boss 92 form a platform 90, and the lower surface of the platform 90 cooperates with the stepped surface of the stepped hole.
  • the first insulating cover is provided with a first receiving groove 61 for accommodating the control board on one side of the control board.
  • the above structure is simple and easy to assemble.
  • the second insulating cover is provided with a third receiving groove 71 for accommodating the control board on one side of the control board.
  • the first receiving groove 61 and the third receiving groove 71 form an receiving space for accommodating the control board, and the control board is wrapped between the first insulating cover and the second insulating cover. between.
  • a second receiving groove 62 for accommodating the lead wire 50 is disposed on a side of the first insulating cover facing the control board, and the second receiving groove 62 is located at the first receiving groove 61. One side is in communication with the first receiving groove 61.
  • a fourth receiving groove 72 for accommodating the lead wire 50 is disposed on a side of the second insulating cover facing the control board, and the fourth receiving groove 72 is located at the third receiving groove 71. It is close to the side where the valve needle 20 is located and communicates with the third receiving groove 71.
  • the above structure can further position the lead wires 50 to prevent the lead wires 50 from being scrambled.
  • the holes formed by the second receiving groove 62 and the fourth receiving groove 72 are adapted to the outer surface of the lead 50. .
  • the above structure can further reduce the probability of exposure of the outside air, dust, moisture, etc. to the control panel.
  • the first insulating structure 60 is a first insulating cover, and the first insulating cover is engaged with the second insulating cover to be wrapped on the outer side of the control board.
  • the above structure can further reduce the probability of occurrence of a lightning strike phenomenon.
  • the height of the first insulating cover is not lower than the height of the second insulating cover. Since the solder joint position of the control board and the lead is high, the height of the first insulating cover needs to be high to cover the solder joint. Of course, those skilled in the art should know that the height of the second insulating cover can also be higher than or equal to the height of the first insulating cover, and the second insulating cover shields the metal structure on the control board or cooperates with other insulating sleeves to shield the metal. Structure to reduce the chance of lightning strikes.
  • the first insulating cover and the second insulating cover are made of an insulating non-metal material.
  • the first insulating cover and the second insulating cover are made of a soft insulating material, and the first insulating cover is connected to the second insulating cover by an interference.
  • the first insulating cover and the second insulating cover are made of a rubber material.
  • the connection manner of the first insulating cover and the second insulating cover is not limited thereto, and may also be connected by means of snapping or plugging.
  • one end of the lead 50 is soldered to the control board, and the other end of the lead 50 is connected to the terminal 110 to form the structure in FIG. 7;
  • control board is mounted in the first receiving recess 61 of the first insulating cover, and the lead 50 of the lower part of the control board is mounted in the second receiving recess 62 to form the structure in FIG. 8;
  • the electronic expansion valve (not shown) of the second embodiment is different from the electronic expansion valve of the first embodiment in that the first insulating structure 60 and the second insulating structure 70 are of a unitary structure. Specifically, the first insulating structure 60 and the second insulating structure 70 form an insulating sleeve.
  • one end of the lead 50 is first soldered to the control board, and then the lead 50 is passed through the second receiving recess in the insulating sleeve.
  • the groove 62 and the fourth receiving groove 72 are inside. Finally, the other end of the lead 50 is connected to the terminal 110.
  • the present application also provides a refrigeration system, and an embodiment of the refrigeration system (not shown) according to the present application includes an electronic expansion valve, which is the above-described electronic expansion valve. Since the electronic expansion valve has an advantage that it is less likely to cause a lightning strike phenomenon, the refrigeration system having the same has the above advantages.

Abstract

一种电子膨胀阀及具有其的制冷系统，电子膨胀阀包括：阀体(10)；阀针(20)，可移动地设置在阀体(10)内；驱动部(30)，驱动阀针(20)移动；控制部(40)，通过引线(50)与外界设备电性连接以控制驱动部(30)动作；第一绝缘结构(60)，位于控制部(40)与引线(50)的连接处，且将连接处与驱动部(30)隔离，该电子膨胀阀能够有效地解决现有技术中的电子膨胀阀容易产生雷击现象的问题。

Description

电子膨胀阀及具有其的制冷系统 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系统。
背景技术
如图1所示，在现有技术中，变频空调用减速式电子膨胀阀主要由两部分组成，一部分为阀体部分用于流量调节，另一部分为用于驱动的线圈部分。其中线圈部分包括：永磁式步进电机1、具有三级减速的齿轮减速器2、具有将电机旋转运动转化成丝杆3垂直运动的螺纹副结构5，阀体包括阀座10’，以及控制阀针8升降的波纹管7等核心部件构成。下面介绍一下上述电子膨胀阀的工作原理：首先，空调系统的电子控制器控制电子膨胀阀的步进电机1的输出轴旋转，电机1与齿轮减速器2配合带动齿轮减速器2的输出轴旋转，齿轮减速器2的输出轴与丝杆配合，带动丝杆旋转，然后丝杆与螺纹副结构5配合，以使丝杆能够上下移动。丝杆的顶端焊接有钢球11’，钢球11’的下端设置有衬套6，衬套6的下端连接有阀针8。当丝杆被驱动部件驱动向下移动时，丝杆会顶住钢球11’，钢球11’顶住衬套6，衬套6顶住阀针8使得阀针8能够与丝杆同步向下运动直至阀针8位于关闭位置，即阀针8与阀体10’相抵接的位置。当阀针8处于关闭位置时，波纹管7处于不断拉伸状态。当施加反向脉冲时，丝杆3向上运动，阀针8在波纹管7的回复弹力和系统压力作用下不断向上运动，从而改变阀口9的开启程度，使得通流面积发生变化，达到控制流量调节过热度的目的。
但是上述的电子膨胀阀在实际工作时，由于电路板12’与引线13’的焊接点离步进电机1较近，绝缘距离较短，因此容易出现雷击现象(上述雷击现象可能是由于被雷击中所导致的现象，也可能是在瞬间加较大电压时，电路板12’与步进电机1之间产生电弧所导致的现象)，导致控制系统被干扰，出现误操作现象。
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系统，以解决现有技术中的电子膨胀阀容易产生雷击现象的问题。
为了实现上述目的，根据本发明的第一个方面，提供了一种电子膨胀阀，包括：阀体；阀针，可移动地设置在阀体内；驱动部，驱动阀针移动；控制部，通过引线与外界设备电性连接以控制驱动部动作；第一绝缘结构，位于控制部与引线的连接处，且将连接处与驱动部隔离。
进一步地，第一绝缘结构为第一绝缘盖，控制部包括与引线连接的控制板，第一绝缘盖设置在控制板靠近驱动部的一侧。
进一步地，第一绝缘盖朝向控制板的一侧上设置有容纳控制板的第一容纳凹槽。
进一步地，第一绝缘盖朝向控制板的一侧上还设置有容纳引线的第二容纳凹槽，第二容纳凹槽位于第一容纳凹槽的一侧并与第一容纳凹槽连通。
进一步地，电子膨胀阀还包括：驱动部外壳，罩设在驱动部和控制部的外侧；第二绝缘结构，位于控制部与驱动部外壳的内壁之间。
进一步地，第一绝缘结构为第一绝缘盖，第二绝缘结构为第二绝缘盖，控制部包括与引线连接的控制板，第一绝缘盖设置在控制板靠近驱动部的一侧，第二绝缘盖设置在控制板远离驱动部的一侧。
进一步地，第二绝缘盖朝向控制板的一侧上设置有容纳控制板的第三容纳凹槽。
进一步地，第二绝缘盖朝向控制板的一侧上还设置有容纳引线的第四容纳凹槽，第四容纳凹槽位于第三容纳凹槽的一侧并与第三容纳凹槽连通。
进一步地，第一绝缘盖与第二绝缘盖相扣合以包裹在控制板的外侧。
进一步地，第一绝缘盖的高度不低于第二绝缘盖的高度。
进一步地，电子膨胀阀还包括：与驱动部外壳连接的传动机构容纳箱，具有避让引线的避让孔，第一绝缘盖与第二绝缘盖扣合后封堵在避让孔内。
进一步地，避让孔为阶梯孔，第一绝缘盖的中部设置有第一凸台，第二绝缘盖的中部设置有第二凸台，第一绝缘盖与第二绝缘盖扣合后，第一凸台与第二凸台形成平台，平台与阶梯孔的阶梯面配合。
进一步地，第一绝缘结构与第二绝缘结构为一体结构。
根据本发明的第二方面，提供了一种制冷系统，包括：电子膨胀阀，电子膨胀阀为上述的电子膨胀阀。
根据本发明的第三方面，提供了一种电子膨胀阀，包括：阀体；阀针，可移动地设置在阀体内；驱动部，驱动阀针移动；控制部，通过引线与外界设备电性连接以控制驱动部动作；第一绝缘结构，位于控制部与驱动部之间，且将控制部和引线的连接处与驱动部隔离。
根据本发明的第四方面，提供了一种制冷系统，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，电子膨胀阀包括第一绝缘结构，第一绝缘结构位于控制部与引线的连接处和驱动部之间。在上述结构中，控制部与引线的连接处和驱动部之间设置有第一绝缘结构使得绝缘距离有所增加，从而降低了雷击现象发生的几率，进而降低了出现制冷系统误操作现象的几率，解决了现有技术中的电子膨胀阀容易产生雷击现象的问题。
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示出了现有技术中的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的纵剖结构示意图；
图3示出了图2的电子膨胀阀的局部立体结构示意图；
图4示出了图2的电子膨胀阀的局部纵剖结构示意图；
图5示出了图2的电子膨胀阀的第一绝缘结构的立体结构示意图；
图6示出了图2的电子膨胀阀的第二绝缘结构的立体结构示意图；
图7示出了图2的电子膨胀阀的控制板、引线与端子配合的立体结构示意图；
图8示出了图2的电子膨胀阀的控制板、引线、端子与第一绝缘结构配合的立体结构示意图；以及
图9示出了图2的电子膨胀阀的控制板、引线、第一绝缘结构与第二绝缘结构配合的立体结构示意图。
其中，上述附图包括以下附图标记：
10、阀体；20、阀针；30、驱动部；40、控制部；50、引线；60、第一绝缘结构；61、第一容纳凹槽；62、第二容纳凹槽；70、第二绝缘结构；71、第三容纳凹槽；72、第四容纳凹槽；80、传动机构容纳箱；90、平台；91、第一凸台；92、第二凸台；100、驱动部外壳；110、端子。
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4所示，实施例一的电子膨胀阀包括：阀体10、阀针20、驱动部30、控制部40以及第一绝缘结构60。其中，阀针20，可移动地设置在阀体10内；驱动部30，驱动阀针20移动；控制部40，通过引线50与外界设备电性连接以控制驱动部30动作；第一绝缘结构60位于控制部40与驱动部30之间，且将控制部40和引线50的连接处与驱动部30隔离。
需要说明的是，本说明书所述的“连接处”是指控制部40与引线50之间所连接的部位以及该部位附近的区域。
应用实施例一的技术方案，电子膨胀阀包括第一绝缘结构60，第一绝缘结构60位于控制部40与引线50的连接处和驱动部30之间。在上述结构中，控制部40与引线50的连接处和驱动部30之间设置有第一绝缘结构60使得绝缘距离有所增加，从而降低了雷击现象发生的 几率，进而降低了出现制冷系统误操作现象的几率，解决了现有技术中的电子膨胀阀容易产生雷击现象的问题。
在更具体的实施方式中，第一绝缘结构60位于控制部40与引线50的连接处，且将连接处与驱动部30隔离。
需要说明的是，如图2至图4所示，在实施例一中，控制部40包括与引线50连接的控制板，引线50焊接在控制板靠近驱动部30的表面上。由于焊接会存在焊点，焊点具有一定的高度，因此焊点凸起的最高处与驱动部30之间的距离有可能小于预定的绝缘距离，从而产生雷击现象。因此，需要增加设置第一绝缘结构60以使绝缘距离有所增加。
如图3至图5所示，在实施例一中，第一绝缘结构60为第一绝缘盖，控制部40包括与引线50连接的控制板，第一绝缘盖设置在控制板靠近驱动部30的一侧。上述结构能够盖住控制板的具有焊点的区域，从而进一步降低了雷击现象发生的几率。此外，上述结构简单，易于加工和装配。
如图4所示，在实施例一中，电子膨胀阀还包括：驱动部外壳100。其中，驱动部外壳100罩设在驱动部30和控制部40的外侧。上述结构能够防止外界的空气、灰尘、水汽等与控制部40接触，从而保证控制部的使用寿命。由于控制板远离驱动部30的表面上也存在金属结构，因此控制板与驱动部外壳100之间也有可能产生雷击现象。为了进一步降低雷击现象的发生，如图6所示，在本实施例中，电子膨胀阀还包括：第二绝缘结构70。其中，第二绝缘结构70位于控制部40与驱动部外壳100的内壁之间。上述结构使得控制部上的金属结构与驱动部外壳100之间的绝缘距离有所增加，从而降低了雷击现象发生的几率。
如图6所示，在实施例一中，第二绝缘结构70为第二绝缘盖，第二绝缘盖设置在控制板远离驱动部30的一侧。上述结构能够盖住控制板的具有金属结构的区域，从而进一步降低了雷击现象发生的几率。此外，上述结构简单，易于加工和装配。
如图4和图9所示，在实施例一中，电子膨胀阀还包括：与驱动部外壳100连接的传动机构容纳箱80。其中，传动机构容纳箱80具有避让引线50的避让孔。传动机构容纳在传动机构容纳箱80内。具体地，如图4所示，驱动部外壳100罩设在传动机构容纳箱80上部，避让孔贯穿传动机构容纳箱80的上表面和下表面，引线50穿设在避让孔内并与位于驱动部外壳100内的控制板焊接连接。由于驱动部外壳100并没有完全包裹传动机构容纳箱80，因此外界的空气、灰尘、水汽等可能会通过避让孔的远离驱动部外壳100的一端进入，并与控制板接触，导致控制板寿命缩短。为了解决上述问题，在本实施例中，第一绝缘盖与第二绝缘盖扣合后封堵在避让孔内。上述结构能够减小外界的空气、灰尘、水汽等接触控制板的几率。
如图5、图6和图9所示，在实施例一中，避让孔为阶梯孔，第一绝缘盖的中部设置有第一凸台91，第二绝缘盖的中部设置有第二凸台92，第一绝缘盖与第二绝缘盖扣合后，第一凸台91与第二凸台92形成平台90，平台90的下表面与阶梯孔的阶梯面配合。上述结构简单，能够进一步减小外界的空气、灰尘、水汽等接触控制板的几率。
如图5所示，在实施例一中，第一绝缘盖朝向控制板的一侧上设置有容纳控制板的第一容纳凹槽61。上述结构简单，便于装配。
如图6所示，在实施例一中，第二绝缘盖朝向控制板的一侧上设置有容纳控制板的第三容纳凹槽71。当第一绝缘盖与第二绝缘盖扣合时，第一容纳凹槽61与第三容纳凹槽71形成容纳控制板的容纳空间，控制板被包裹在第一绝缘盖与第二绝缘盖之间。上述结构简单，便于装配。
如图5所示，在实施例一中，第一绝缘盖朝向控制板的一侧上还设置有容纳引线50的第二容纳凹槽62，第二容纳凹槽62位于第一容纳凹槽61的一侧并与第一容纳凹槽61连通。上述结构能够对引线50进行定位，防止引线50乱窜。
如图6所示，在实施例一中，第二绝缘盖朝向控制板的一侧上还设置有容纳引线50的第四容纳凹槽72，第四容纳凹槽72位于第三容纳凹槽71的靠近阀针20所在的一侧并与第三容纳凹槽71连通。上述结构能够进一步对引线50进行定位，防止引线50乱窜。
如图9所示，在实施例一中，当第一绝缘盖与第二绝缘盖扣合时，第二容纳凹槽62与第四容纳凹槽72形成的孔与引线50的外表面适配。上述结构能够进一步减小外界的空气、灰尘、水汽等接触控制板的几率。
如图9所示，在实施例一中，第一绝缘结构60为第一绝缘盖，第一绝缘盖与第二绝缘盖相扣合以包裹在控制板的外侧。上述结构能够进一步降低雷击现象发生的几率。
如图3、图4和图9所示，在实施例一中，第一绝缘盖的高度不低于第二绝缘盖的高度。由于控制板与引线的焊点位置较高，因此第一绝缘盖的高度需要较高以将焊点盖住。当然，本领域技术人员应当知道，第二绝缘盖的高度亦可以高于或等于第一绝缘盖的高度，第二绝缘盖将控制板上的金属结构遮蔽，或与其他绝缘套配合以遮蔽金属结构，降低雷击现象发生的几率。
在实施例一中，第一绝缘盖与第二绝缘盖由绝缘的非金属材料制成。优选地，在实施例一中，第一绝缘盖与第二绝缘盖由软质的绝缘材料制成，第一绝缘盖与第二绝缘盖过盈连接。进一步优选地，第一绝缘盖与第二绝缘盖由橡胶材料制成。当然，本领域技术人员应当知道第一绝缘盖与第二绝缘盖的连接方式不限于此，还可以通过卡接或插接等方式连接。
下面具体介绍一下安装步骤：
1、首先将引线50的一端与控制板焊接在一起，再将引线50的另一端与端子110连接，形成图7中的结构；
2、将控制板安装在第一绝缘盖的第一容纳凹槽61内，将控制板下部的引线50安装在第二容纳凹槽62内，形成图8中的结构；
3、扣合第一绝缘盖与第二绝缘盖，形成图9中的结构。
实施例二的电子膨胀阀(图中未示出)与实施例一的电子膨胀阀的区别在于第一绝缘结构60与第二绝缘结构70为一体结构。具体地，第一绝缘结构60与第二绝缘结构70形成一个绝缘套，在安装时，首先将引线50的一端与控制板焊接在一起，再将引线50穿过绝缘套内的第二容纳凹槽62和第四容纳凹槽72内。最后将引线50的另一端与端子110连接。
本申请还提供了一种制冷系统，根据本申请的制冷系统(图中未示出)的实施例包括：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不易产生雷击现象的优点，因此具有其的制冷系统也具有上述优点。
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 (28)

  1. 一种电子膨胀阀，其特征在于，包括：
    阀体(10)；
    阀针(20)，可移动地设置在所述阀体(10)内；
    驱动部(30)，驱动所述阀针(20)移动；
    控制部(40)，通过引线(50)与外界设备电性连接以控制所述驱动部(30)动作；
    第一绝缘结构(60)，位于所述控制部(40)与所述引线(50)的连接处，且将所述连接处与所述驱动部(30)隔离。
  2. 根据权利要求1所述的电子膨胀阀，其特征在于，所述第一绝缘结构(60)为第一绝缘盖，所述控制部(40)包括与所述引线(50)连接的控制板，所述第一绝缘盖设置在所述控制板靠近所述驱动部(30)的一侧。
  3. 根据权利要求2所述的电子膨胀阀，其特征在于，所述第一绝缘盖朝向所述控制板的一侧上设置有容纳所述控制板的第一容纳凹槽(61)。
  4. 根据权利要求3所述的电子膨胀阀，其特征在于，所述第一绝缘盖朝向所述控制板的一侧上还设置有容纳所述引线(50)的第二容纳凹槽(62)，所述第二容纳凹槽(62)位于所述第一容纳凹槽(61)的一侧并与所述第一容纳凹槽(61)连通。
  5. 根据权利要求1所述的电子膨胀阀，其特征在于，所述电子膨胀阀还包括：
    驱动部外壳(100)，罩设在所述驱动部(30)和所述控制部(40)的外侧；
    第二绝缘结构(70)，位于所述控制部(40)与所述驱动部外壳(100)的内壁之间。
  6. 根据权利要求5所述的电子膨胀阀，其特征在于，所述第一绝缘结构(60)为第一绝缘盖，所述第二绝缘结构(70)为第二绝缘盖，所述控制部(40)包括与所述引线(50)连接的控制板，所述第一绝缘盖设置在所述控制板靠近所述驱动部(30)的一侧，所述第二绝缘盖设置在所述控制板远离所述驱动部(30)的一侧。
  7. 根据权利要求6所述的电子膨胀阀，其特征在于，所述第二绝缘盖朝向所述控制板的一侧上设置有容纳所述控制板的第三容纳凹槽(71)。
  8. 根据权利要求7所述的电子膨胀阀，其特征在于，所述第二绝缘盖朝向所述控制板的一侧上还设置有容纳所述引线(50)的第四容纳凹槽(72)，所述第四容纳凹槽(72)位于所述第三容纳凹槽(71)的一侧并与所述第三容纳凹槽(71)连通。
  9. 根据权利要求6所述的电子膨胀阀，其特征在于，所述第一绝缘盖与所述第二绝缘盖相扣合以包裹在所述控制板的外侧。
  10. 根据权利要求6所述的电子膨胀阀，其特征在于，所述第一绝缘盖的高度不低于所述第二绝缘盖的高度。
  11. 根据权利要求6所述的电子膨胀阀，其特征在于，所述电子膨胀阀还包括：
    与所述驱动部外壳(100)连接的传动机构容纳箱(80)，具有避让所述引线(50)的避让孔，所述第一绝缘盖与所述第二绝缘盖扣合后封堵在所述避让孔内。
  12. 根据权利要求11所述的电子膨胀阀，其特征在于，所述避让孔为阶梯孔，所述第一绝缘盖的中部设置有第一凸台(91)，所述第二绝缘盖的中部设置有第二凸台(92)，所述第一绝缘盖与所述第二绝缘盖扣合后，所述第一凸台(91)与所述第二凸台(92)形成平台(90)，所述平台(90)与所述阶梯孔的阶梯面配合。
  13. 根据权利要求5所述的电子膨胀阀，其特征在于，所述第一绝缘结构(60)与所述第二绝缘结构(70)为一体结构。
  14. 一种制冷系统，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13中任一项所述的电子膨胀阀。
  15. 一种电子膨胀阀，其特征在于，包括：
    阀体(10)；
    阀针(20)，可移动地设置在所述阀体(10)内；
    驱动部(30)，驱动所述阀针(20)移动；
    控制部(40)，通过引线(50)与外界设备电性连接以控制所述驱动部(30)动作；
    第一绝缘结构(60)，位于所述控制部(40)与所述驱动部(30)之间，且将所述控制部(40)和所述引线(50)的连接处与所述驱动部(30)隔离。
  16. 根据权利要求15所述的电子膨胀阀，其特征在于，所述第一绝缘结构(60)为第一绝缘盖，所述控制部(40)包括与所述引线(50)连接的控制板，所述第一绝缘盖设置在所述控制板靠近所述驱动部(30)的一侧。
  17. 根据权利要求16所述的电子膨胀阀，其特征在于，所述第一绝缘盖朝向所述控制板的一侧上设置有容纳所述控制板的第一容纳凹槽(61)。
  18. 根据权利要求17所述的电子膨胀阀，其特征在于，所述第一绝缘盖朝向所述控制板的一侧上还设置有容纳所述引线(50)的第二容纳凹槽(62)，所述第二容纳凹槽(62)位于所述第一容纳凹槽(61)的一侧并与所述第一容纳凹槽(61)连通。
  19. 根据权利要求15所述的电子膨胀阀，其特征在于，所述电子膨胀阀还包括：
    驱动部外壳(100)，罩设在所述驱动部(30)和所述控制部(40)的外侧；
    第二绝缘结构(70)，位于所述控制部(40)与所述驱动部外壳(100)的内壁之间。
  20. 根据权利要求19所述的电子膨胀阀，其特征在于，所述第一绝缘结构(60)为第一绝缘盖，所述第二绝缘结构(70)为第二绝缘盖，所述控制部(40)包括与所述引线(50)连接的控制板，所述第一绝缘盖设置在所述控制板靠近所述驱动部(30)的一侧，所述第二绝缘盖设置在所述控制板远离所述驱动部(30)的一侧。
  21. 根据权利要求20所述的电子膨胀阀，其特征在于，所述第二绝缘盖朝向所述控制板的一侧上设置有容纳所述控制板的第三容纳凹槽(71)。
  22. 根据权利要求21所述的电子膨胀阀，其特征在于，所述第二绝缘盖朝向所述控制板的一侧上还设置有容纳所述引线(50)的第四容纳凹槽(72)，所述第四容纳凹槽(72)位于所述第三容纳凹槽(71)的一侧并与所述第三容纳凹槽(71)连通。
  23. 根据权利要求20所述的电子膨胀阀，其特征在于，所述第一绝缘盖与所述第二绝缘盖相扣合以包裹在所述控制板的外侧。
  24. 根据权利要求20所述的电子膨胀阀，其特征在于，所述第一绝缘盖的高度不低于所述第二绝缘盖的高度。
  25. 根据权利要求20所述的电子膨胀阀，其特征在于，所述电子膨胀阀还包括：
    与所述驱动部外壳(100)连接的传动机构容纳箱(80)，具有避让所述引线(50)的避让孔，所述第一绝缘盖与所述第二绝缘盖扣合后封堵在所述避让孔内。
  26. 根据权利要求25所述的电子膨胀阀，其特征在于，所述避让孔为阶梯孔，所述第一绝缘盖的中部设置有第一凸台(91)，所述第二绝缘盖的中部设置有第二凸台(92)，所述第一绝缘盖与所述第二绝缘盖扣合后，所述第一凸台(91)与所述第二凸台(92)形成平台(90)，所述平台(90)与所述阶梯孔的阶梯面配合。
  27. 根据权利要求19所述的电子膨胀阀，其特征在于，所述第一绝缘结构(60)与所述第二绝缘结构(70)为一体结构。
  28. 一种制冷系统，包括：电子膨胀阀，其特征在于，所述电子膨胀阀为权利要求15至27中任一项所述的电子膨胀阀。
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