KR20020000089A - Electric Expansion Valve having Two way Control Function - Google Patents

Electric Expansion Valve having Two way Control Function Download PDF

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Publication number
KR20020000089A
KR20020000089A KR1020000034228A KR20000034228A KR20020000089A KR 20020000089 A KR20020000089 A KR 20020000089A KR 1020000034228 A KR1020000034228 A KR 1020000034228A KR 20000034228 A KR20000034228 A KR 20000034228A KR 20020000089 A KR20020000089 A KR 20020000089A
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KR
South Korea
Prior art keywords
fluid
expansion valve
control function
rotating
valve body
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KR1020000034228A
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Korean (ko)
Inventor
이강운
Original Assignee
이충전
삼성광주전자 주식회사
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Priority to KR1020000034228A priority Critical patent/KR20020000089A/en
Publication of KR20020000089A publication Critical patent/KR20020000089A/en

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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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0603—Multiple-way valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S251/00—Valves and valve actuation
    • Y10S251/903—Needle valves

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

Abstract

PURPOSE: An electronic expansion valve having a bidirectional expansion control function is control the discharge of a fluid in two directions by using a single valve, thereby being employed in a vegetable refrigerator having two storage chambers. CONSTITUTION: An electronic expansion valve having a bidirectional expansion control function includes a valve body mounted with an inflow hole for introducing a fluid, and a plurality of outflow holes for discharging pressure-reduced fluid in two directions, a rotation element mounted in the center of the valve body for rotating by magnetic fields generated by the power supply, a rotation shaft penetratingly mounted in the center of the rotation element in two directions to rotate by the rotation force of the rotation element and simultaneously to move rectilinearly in the horizontal direction, first and second cap elements mounted around the outflow holes of the valve body and formed with orifices to discharge the fluid and a nut part corresponding to a screw part of the rotation shaft for guiding the rectilinear motion of the rotation shaft, and needles mounted at both ends of the rotation shaft for opening or closing the orifices.

Description

양방향 제어기능을 갖는 전자 팽창 밸브{Electric Expansion Valve having Two way Control Function}Electric expansion valve having two way control function

본 발명은 냉매를 감압시키는 전자 팽창 밸브에 관한 것으로서, 특히, 냉매를 양방향으로 토출시키도록 구성하여 사용조건에 따라 냉매를 양방향으로 동시에 토출시키거나 또는 선택적으로 어느 한 쪽으로만 토출시킬 수 있도록 하는 양방향 제어기능을 갖는 전자팽창밸브에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic expansion valve for reducing a refrigerant, in particular, configured to discharge the refrigerant in both directions so that the refrigerant can be discharged in both directions simultaneously or selectively in either direction depending on the usage conditions. It relates to an electromagnetic expansion valve having a control function.

종래의 전자팽창밸브는 도 1에 도시한 바와 같이 냉매관이 설치되며 그 내부에 오리피스(1a)가 형성된 본체(1)와, 이 본체(1)의 상단에 고정되어 외주면에는 전자석(2a)이 내주면에는 나사부(2b)가 각각 형성된 원통형의 고정체(2)와, 상기 고정체(2)의 내측에 삽입되고 그 외주면에 상기 나사부(2b)에 대응되는 나사부(3a)가 형성되며, 회전동작에 의하여 상하로 이동되는 회전체(3)로 이루어져 있다.As shown in FIG. 1, a conventional solenoid valve is provided with a main body 1 having a refrigerant pipe formed therein and having an orifice 1 a therein, and fixed to an upper end of the main body 1 so that an electromagnet 2 a is provided on an outer circumferential surface thereof. On the inner circumferential surface is formed a cylindrical fixed body 2 each formed with a threaded portion 2b, and a threaded portion 3a inserted in the inner side of the fixed body 2 and corresponding to the screwed portion 2b on the outer circumferential surface thereof. It consists of a rotating body (3) moved up and down by.

상기 회전체(3)에는 그 하단에 니들(3b)이 형성되어 상하 이동시 상기 본체(1)내부의 오리피스(1a)를 개방 또는 폐쇄시키도록 되어 있다.A needle 3b is formed at the lower end of the rotating body 3 to open or close the orifice 1a in the main body 1 when it is moved up and down.

상기 본체(1)의 상단에는 회전체(3)와 고정체(2)를 감싸는 캡(4)이 씌워지며, 이 캡(4)의 상단에는 그 외주면에 나사산이 형성된 가이드 봉(5)이 아래 방향쪽으로 돌출 형성되어 있다. 또한, 이 가이드 봉(5)에는 일측으로 지지대(6a)를 갖는 이동부재(6)가 끼워지며, 이 지지대(6a)는 상기 회전체(3)상단의 편심축(3c)에 대응된다. 따라서, 회전체(3) 회전됨과 동시에 상하운동할 때에 편심축(3c)이 지지대(6a)를 회전시키고, 이에 따라 이동부재(6)는 가이드 봉(5)의 나사 산을 따라 회전하면서 상하로 이동하도록 되어 있다.The upper end of the main body 1 is covered with a cap (4) surrounding the rotating body (3) and the stationary body (2), the upper end of the cap (4) has a guide rod (5) formed with a screw thread on its outer peripheral surface It protrudes toward the direction. In addition, the guide rod 5 is fitted with a moving member 6 having a support 6a on one side, and the support 6a corresponds to the eccentric shaft 3c on the upper end of the rotating body 3. Therefore, the eccentric shaft 3c rotates the support 6a when the rotary body 3 rotates and moves up and down, and thus the movable member 6 rotates up and down along the thread of the guide rod 5. It is supposed to move.

그러나, 이와 같은 전자팽창밸브는 단 방향으로 가스량을 제어할 수 있도록 구성되어 고내가 두 개로 형성된 김치냉장고 또는 그 밖에 양방향으로 가스를 유출시켜야 하는 제품 적용시에 부품수가 많이 들고 그에 따라 부품비가 많이 드는 등의 문제점이 있다.However, such an electronic expansion valve is configured to control the amount of gas in one direction, so that the number of parts in the kimchi refrigerator formed of two inside the refrigerator or other products that need to flow out of gas in both directions, which is expensive There is such a problem.

본 발명은 상술한 문제점을 해결하기 위하여 안출 된 것으로서, 가스가 유출되는 유출구를 양방향으로 형성하고, 그 양방향으로 유출되는 가스의 제어를 쉽게 행하도록 하는 양방향 제어기능을 갖는 전자팽창밸브를 제공하는 데 있다.The present invention has been made in order to solve the above problems, to provide an electronic expansion valve having a bidirectional control function to form a gas outlet outlet in both directions, and to easily control the gas flows in both directions. have.

상기한 목적을 달성하기 위하여 본 발명은 유체가 유입되는 유입구 및 상기 유입구를 통해 유입되어 감압된 유체를 양방향으로 토출시키는 복수개의 유출구가 형성된 밸브본체와, 상기 밸브본체의 내부 중앙에 설치되어 전원이 인가됨에 따라 형성된 자계에 의해 회전하는 회전체와, 상기 회전체의 중앙에 양방향으로 관통되게 설치되어 상기 회전체의 회전력에 의해 회전 운동함과 동시에 수평방향으로 직선 이동하도록 그 일단부 외주면에 나사부가 형성된 회전축과, 상기 밸브본체의 유출구측에 설치되어 유체를 분출시키는 오리피스가 각각 형성됨과 동시에 그 어느 한쪽 내주면에는 상기 회전축의 직선이동 됨을 안내하도록 상기 회전축의 나사부에대응하는 너트부가 형성된 제1,2캡부재와, 상기 회전축의 양단에 각각 설치되어 상기 오리피스를 개폐시키는 니들로 구성된 것을 특징으로 한다.In order to achieve the above object, the present invention provides a valve main body formed with a plurality of outlets for injecting the fluid flows through the inlet and discharges the fluid decompressed through the inlet in both directions, the power supply is installed in the inner center of the valve body The rotating body is rotated by the magnetic field formed by the applied magnetic field, and the screw is provided on the outer peripheral surface of one end portion so as to penetrate in both directions at the center of the rotating body so as to rotate linearly in the horizontal direction while rotating by the rotational force of the rotating body. First and second formed rotary shafts, and orifices provided on the outlet side of the valve body to eject the fluid, respectively, and at one of the inner circumferential surfaces thereof, nut portions corresponding to the screw portions of the rotary shafts to guide the linear movement of the rotary shafts. A cap member and both ends of the rotary shaft, respectively; It characterized by consisting of lung needle.

도 1은 종래의 전자 팽창 밸브의 구성을 도시한 단면도,1 is a cross-sectional view showing the configuration of a conventional electromagnetic expansion valve,

도 2는 본 발명에 의한 전자 팽창 밸브의 구성을 도시한 반 단면도이다.2 is a half sectional view showing the configuration of the electromagnetic expansion valve according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명><Description of the reference numerals for the main parts of the drawings>

11 : 밸브본체 11a : 유입구11 valve body 11a inlet

11b : 유출구 13 : 회전체11b: outlet 13: rotating body

15 : 회전축 15a : 나사부15: rotating shaft 15a: threaded portion

17,19 : 제1,2캡부재 17a,19a : 오리피스17,19: First and second cap member 17a, 19a: Orifice

17b : 너트부 17c,19c : 걸림턱17b: nut 17c, 19c: locking jaw

17d : 유로 21,23 : 니들17d: Euro 21,23: Needle

21a,23a : 걸림턱 25 : 탄성부재21a, 23a: engaging jaw 25: elastic member

이하, 첨부된 도면을 참조하여 본 발명의 구성 및 작용을 더욱 상세히 설명하고자 한다.Hereinafter, with reference to the accompanying drawings will be described in more detail the configuration and operation of the present invention.

도 2는 본 발명에 의한 전자 팽창 밸브의 구성을 도시한 단면도이다.2 is a cross-sectional view showing the configuration of the electromagnetic expansion valve according to the present invention.

상기 도면에 도시한 바와 같이 본 발명에 의한 양방향 제어기능을 갖는 전자팽창밸브는 유체가 유입되는 유입구(11a) 및 상기 유입구(11a)를 통해 유입되어 감압 된 유체를 양방향으로 토출시키는 복수개의 유출구(11b)가 형성된 밸브본체(11)와, 상기 밸브본체(11)의 내부 중앙에 설치되어 전원이 인가됨에 따라 형성된 자계에 의해 회전하는 회전체(13)와, 상기 회전체(13)의 중앙에 양방향으로 관통되게 설치되어 상기 회전체(13)의 회전력에 의해 회전 운동함과 동시에 수평방향으로 직선 이동하는 회전축(15)과, 상기 밸브본체(11)의 유출구(11b)측에 설치되어 유체가 분출되는 오리피스(17a,19a)가 각각 형성됨과 동시에 그 내주면은 상기 회전축(15)의 직선 이동됨을 안내하는 제1,2캡부재(17,19)와, 상기 회전축(15)의 양단에 각각 설치되어 상기 오리피스(17a,19a)를 개폐시키는 니들(21,23)과, 상기 니들(21,23)에 외감되어 상기 회전축(15)이 전진 또는 후진하여 좌우로 직선이동시에 압축되고그 압축력에 의해 상기 회전축(15)이 밸브본체(11)의 중앙의 위치로 복귀할 때에 상기 니들(21,23)을 원래의 위치로 복원시키는 탄성부재(25)로 구성되어 있다.As shown in the drawings, the electromagnetic expansion valve having a bidirectional control function according to the present invention includes a plurality of outlets through which the fluid flows in through the inlet port 11a and the inlet port 11a and discharges the reduced pressure fluid in both directions ( 11b) is formed in the valve body 11, the inner body of the valve body 11, the rotating body 13 is rotated by the magnetic field formed as the power is applied, and in the center of the rotating body 13 It is installed to penetrate in both directions and is rotated by the rotational force of the rotating body 13 and at the same time linearly moving in the horizontal direction, and installed on the outlet 11b side of the valve body 11 fluid is installed The orifices 17a and 19a that are ejected are formed, respectively, and the inner circumferential surfaces thereof are respectively installed at the first and second cap members 17 and 19 for guiding the linear movement of the rotary shaft 15, and at both ends of the rotary shaft 15, respectively. To open the orifices 17a and 19a. The needles 21 and 23 to be closed and the needles 21 and 23 are externally wound so that the rotary shaft 15 is moved forward or backward and compressed in a linear movement from side to side, and the rotary shaft 15 is compressed by the compression force. 11 is composed of an elastic member 25 for restoring the needles 21 and 23 to their original positions when returning to the center position.

상기 회전축(15)의 일 단부 외주면 및 상기 제1캡부재(17)의 내주면에는 상기 회전축(15)이 회전할 때에 직선 이동하도록 나사부(15a) 및 너트부(17b)가 각각 형성되어 있고, 상기 제1,2캡부재(17)(19)의 내부 및 니들(21,23)에는 상기 회전축(15)을 탄발가능케 지지하는 탄성부재(25)를 고정하도록 걸림턱(17c,19c)(21a,23a)이 각각 형성되어 있고, 상기 제1캡부재(17)의 내부에는 유체가 통과하는 유로(17d)가 관통되어 형성되어 있다.On the outer circumferential surface of one end of the rotating shaft 15 and the inner circumferential surface of the first cap member 17, a screw portion 15a and a nut portion 17b are respectively formed so as to linearly move when the rotating shaft 15 rotates. Inside the first and second cap members 17 and 19 and the needles 21 and 23 to secure the elastic members 25 to elastically support the rotating shaft 15. 23a) are formed respectively, and the flow path 17d through which the fluid passes is formed inside the first cap member 17.

상기 회전체(13)는 마그네트로 이루어져 있다.The rotating body 13 is made of a magnet.

상기에 있어, 나사부(15a) 및 너트부(17b)가 상기 회전축(15)의 좌측 및 제 1캡부재(17)의 내부에 형성시킨 것을 예로 들어 설명하였으나, 그 위치를 회전축(15)의 우측 및 제 2캡부재(19)의 내부에 형성시킬 수 있다.In the above description, the screw portion 15a and the nut portion 17b are formed on the left side of the rotating shaft 15 and the inside of the first cap member 17, for example, but the position thereof is the right side of the rotating shaft 15. And it may be formed in the second cap member 19.

이와 같이 구성된 본 발명에 의한 양방향 제어기능을 갖는 전자팽창밸브는 도시되지 않은 코일에 전원이 인가됨에 따라 회전자계가 형성되어 회전체(13)가 회전함에 따라 상기 회전체(13)의 내부에 설치된 회전축(15)이 회전 운동하고, 상기 회전축(15)의 외주면에 형성된 나사부(15a)가 제1캡부재(17)의 내주면에 형성된 너트부(17b)를 따라 회전되어 좌측 또는 우측으로 이동되고, 그에 따라 상기 회전축(15)의 양단에 구성된 니들(21,23)이 오리피스(17a,19a)를 개폐하여 유량을 조절하게 된다.The electromagnetic expansion valve having a bidirectional control function according to the present invention configured as described above has a rotor magnetic field formed by applying power to a coil (not shown) and installed inside the rotor 13 as the rotor 13 rotates. The rotary shaft 15 is rotated and the screw portion 15a formed on the outer circumferential surface of the rotary shaft 15 is rotated along the nut portion 17b formed on the inner circumferential surface of the first cap member 17 to be moved left or right. Accordingly, the needles 21 and 23 configured at both ends of the rotation shaft 15 open and close the orifices 17a and 19a to adjust the flow rate.

상기와 같이 동작되는 양방향 제어기능을 갖는 전자팽창밸브는 상기 회전축(15)의 중심이 밸브본체(11)의 대략 중앙부에 위치하면 제1,2캡부재(17,19)에 형성된 오리피스(17a,19a)가 동시에 개방되어 유체가 양방향으로 토출되고, 사용자의 의도에 따라 한 방향으로만 유체를 토출시키고자 할 경우에는 상기 회전축(15)을 시계방향 또는 반 시계 방향으로 회전시킴에 따라 상기 회전축(15)이 좌우로 직선이동 함으로서 제1캡부재(17)에 형성된 오리피스(17a) 또는 제2캡부재(19)에 형성된 오리피스(19a)를 개방하게 되어 유체가 한 방향으로만 토출된다.The electromagnetic expansion valve having a bidirectional control function operated as described above has an orifice (17a) formed in the first and second cap members (17, 19) when the center of the rotating shaft (15) is located at approximately the center of the valve body (11). 19a) is simultaneously opened so that the fluid is discharged in both directions, and when the fluid is discharged in only one direction according to the user's intention, the rotation axis 15 is rotated clockwise or counterclockwise. 15 is linearly moved left and right to open the orifice 17a formed in the first cap member 17 or the orifice 19a formed in the second cap member 19, and the fluid is discharged only in one direction.

이때, 탄성부재(25)는 압축되고, 이 압축된 탄성부재(25)는 상기 회전축(15)이 밸브본체(11)의 중앙부로 후진하여 복귀할 경우 복원력에 의해 니들(21,23)을 원래의 위치로 돌아가게 한다.At this time, the elastic member 25 is compressed, the compressed elastic member 25 is the original needle (21, 23) by the restoring force when the rotary shaft 15 is returned to the center of the valve body 11 to return Return to the position of.

상술한 바와 같이, 본 발명에 의한 양방향 제어기능을 갖는 전자팽창밸브는 하나의 밸브를 사용하여 유체의 토출됨을 양방향으로 제어할 수 있게 되어 두 개의 저장고를 형성하는 김치냉장고등에 매우 유용하게 사용할 수 있게 된다.As described above, the electronic expansion valve having a bidirectional control function according to the present invention can control the discharge of the fluid in both directions using a single valve to be very useful for kimchi refrigerators forming two reservoirs, etc. do.

본 발명은 상기한 김치냉장고에 한정된 것은 아니고, 유체의 흐름을 제어하는 모든 제품에 적용될 수 있음은 물론이다.The present invention is not limited to the kimchi refrigerator described above, and of course, it can be applied to all products that control the flow of the fluid.

Claims (4)

유체가 유입되는 유입구 및 상기 유입구를 통해 유입되어 감압된 유체를 양방향으로 토출시키는 복수개의 유출구가 설치된 밸브본체와,A valve body provided with an inlet port through which the fluid is introduced and a plurality of outlet ports for discharging the fluid decompressed through the inlet in both directions; 상기 밸브본체의 내부 중앙에 설치되어 전원이 인가됨에 따라 형성된 자계에 의해 회전하는 회전체와,A rotating body installed at an inner center of the valve body and rotating by a magnetic field formed by applying power; 상기 회전체의 중앙에 양방향으로 관통되게 설치되어 상기 회전체의 회전력에 의해 회전 운동함과 동시에 수평방향으로 직선 이동하도록 그 일단부 외주면에 나사부가 형성된 회전축과,A rotating shaft installed in the center of the rotating body in both directions and having a screw portion formed at an outer circumferential surface of one end thereof so as to rotate linearly in a horizontal direction while rotating by the rotational force of the rotating body; 상기 밸브본체의 유출구측에 설치되어 유체를 분출시키는 오리피스가 각각 형성됨과 동시에 그 어느 한 부재의 내주면에는 상기 회전축의 직선이동 됨을 안내하도록 상기 회전축의 나사부에 대응하는 너트부가 형성된 제1,2캡부재와,First and second cap members are provided on the outlet side of the valve body to form an orifice for ejecting a fluid, respectively, and a nut part corresponding to the screw part of the rotating shaft is formed on the inner circumferential surface of any one member to guide the linear movement of the rotating shaft. Wow, 상기 회전축의 양단에 각각 설치되어 상기 오리피스를 개폐시키는 니들로 구성된 것을 특징으로 하는 양방향 제어기능을 갖는 전자팽창밸브.Electro-expansion valve having a bidirectional control function, characterized in that composed of a needle for opening and closing the orifice respectively installed on both ends of the rotary shaft. 제 1항에 있어서,The method of claim 1, 상기 니들에는 상기 회전축이 전진 또는 후진하여 좌우로 직선이동 할 때에 압축되고 그 압축력에 의해 상기 회전축이 밸브본체의 중앙의 위치로 복귀할 때에 상기 니들을 원래의 위치로 복원시키는 탄성부재가 외감된 것을 특징으로 하는 양방향 제어기능을 갖는 전자팽창밸브.The needle is compressed when the rotary shaft is moved forward or backward in a linear movement from side to side and the elastic member for restoring the needle to its original position when the rotary shaft returns to the position of the center of the valve body by the compression force Electronic expansion valve with bidirectional control. 제 1항에 있어서,The method of claim 1, 상기 제1캡부재의 내부에는 유체가 통과하는 유로가 관통되어 형성된 것을 특징으로 하는 양방향 제어기능을 갖는 전자팽창밸브.The expansion valve having a bidirectional control function, characterized in that the passage through which the fluid passes through the interior of the first cap member. 제 2항에 있어서,The method of claim 2, 상기 제1,2캡부재의 내부 및 니들에는 상기 탄성부재를 고정하도록 걸림턱이 각각 형성된 것을 특징으로 하는 양방향 제어기능을 갖는 전자팽창밸브.Electromagnetic expansion valve having a bidirectional control function, characterized in that the engaging jaw is formed in each of the first and second cap member and the needle to fix the elastic member.
KR1020000034228A 2000-06-21 2000-06-21 Electric Expansion Valve having Two way Control Function KR20020000089A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100442790B1 (en) * 2001-09-12 2004-08-04 위니아만도 주식회사 Device For Controlling Refrigerant of Kim-Chi Storage
CN110296266A (en) * 2018-03-23 2019-10-01 浙江三花智能控制股份有限公司 Electric expansion valve
CN110296265A (en) * 2018-03-23 2019-10-01 浙江三花智能控制股份有限公司 Electric expansion valve
WO2020259656A1 (en) * 2019-06-28 2020-12-30 浙江三花智能控制股份有限公司 Electronic expansion valve
WO2022042006A1 (en) * 2020-08-31 2022-03-03 浙江盾安人工环境股份有限公司 Electronic expansion valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100442790B1 (en) * 2001-09-12 2004-08-04 위니아만도 주식회사 Device For Controlling Refrigerant of Kim-Chi Storage
CN110296266A (en) * 2018-03-23 2019-10-01 浙江三花智能控制股份有限公司 Electric expansion valve
CN110296265A (en) * 2018-03-23 2019-10-01 浙江三花智能控制股份有限公司 Electric expansion valve
CN110296266B (en) * 2018-03-23 2021-08-27 浙江三花智能控制股份有限公司 Electronic expansion valve
US11333415B2 (en) 2018-03-23 2022-05-17 Zhejiang Sanhua Intelligent Controls Electronic expansion valve
WO2020259656A1 (en) * 2019-06-28 2020-12-30 浙江三花智能控制股份有限公司 Electronic expansion valve
US11906055B2 (en) 2019-06-28 2024-02-20 Zhejiang Sanhua Intelligent Controls Co., Ltd. Electronic expansion valve
WO2022042006A1 (en) * 2020-08-31 2022-03-03 浙江盾安人工环境股份有限公司 Electronic expansion valve

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