WO2022042006A1 - Electronic expansion valve - Google Patents

Electronic expansion valve Download PDF

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Publication number
WO2022042006A1
WO2022042006A1 PCT/CN2021/103189 CN2021103189W WO2022042006A1 WO 2022042006 A1 WO2022042006 A1 WO 2022042006A1 CN 2021103189 W CN2021103189 W CN 2021103189W WO 2022042006 A1 WO2022042006 A1 WO 2022042006A1
Authority
WO
WIPO (PCT)
Prior art keywords
stopper
valve
electronic expansion
valve needle
connecting sleeve
Prior art date
Application number
PCT/CN2021/103189
Other languages
French (fr)
Chinese (zh)
Inventor
詹少军
邸志强
Original Assignee
浙江盾安人工环境股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Priority to JP2022567465A priority Critical patent/JP7499879B2/en
Priority to KR1020237001625A priority patent/KR20230023037A/en
Publication of WO2022042006A1 publication Critical patent/WO2022042006A1/en

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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
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift 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
    • 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
    • F16K1/38—Valve members of conical shape
    • 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
    • F16K1/42—Valve seats
    • 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
    • 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
    • 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 application relates to the technical field of valves, in particular, to an electronic expansion valve.
  • the rotor connecting plate and the magnetic steel are integrally injected, and the stopper needs to be assembled with the positioning hole of the rotor connecting plate after injection molding and hot-melt riveted together (3 hot melting points). This process is relatively It is complicated and the stability is not good enough.
  • the rotor connecting plate needs to be welded and fixed with the screw. When welding, the stopper will be burned due to the close distance.
  • the electronic expansion valve in the prior art uses the pre-compression of the pre-tightening spring to enable the conical surface of the valve needle to effectively contact the valve port to ensure sealing reliability. Therefore, the pre-tightening spring becomes an indispensable part. .
  • the main purpose of the present application is to provide an electronic expansion valve to solve the problem that the structure of the electronic expansion valve in the prior art is relatively complex.
  • an electronic expansion valve which includes: a valve seat, the valve seat has a valve port; a nut, the nut is connected with the valve seat; a valve needle, which passes through the valve needle inside the nut, and can control the opening of the valve port; the magnetic rotor, which is rotatably arranged in the valve seat and is located outside the nut; the stopper, the stopper is connected with the inner wall of the magnetic rotor, and is connected with the magnetic rotor It is integrally arranged, and the two rotate synchronously, and the valve needle is worn on the stopper; the connecting sleeve, the connecting sleeve is arranged between the stopper and the valve needle, and the connecting sleeve, the stopper and the valve needle are integrally arranged, and The three rotate synchronously.
  • one end of the connecting sleeve away from the valve port has a protruding section, the protruding section surrounds the peripheral side of the valve needle, and the protruding section protrudes from the surface of the stopper on the side away from the valve port.
  • a side surface of the connecting sleeve is provided with a ring groove, a gap is formed in the ring groove, an inner wall of the stopper has a protrusion, and the protrusion protrudes into the ring groove and the gap.
  • the stopper has a non-circular configuration.
  • connection sleeve is a metal sleeve.
  • the outer side of the nut has a middle stop boss
  • the stopper has a first stop boss
  • the stopper or the magnetic rotor has a second stop boss
  • the middle stop boss Located between the first stop boss and the second stop boss, when the magnetic rotor, the stopper, the connecting sleeve and the valve needle rotate together to the close limit position or the open limit position, the first stop boss or the first stop boss
  • the second stop boss abuts against the middle stop boss to control the movement range of the valve needle.
  • the lower surface of the stopper has a first protruding section and a second protruding section connected in sequence, the first protruding section extends along the axial direction of the valve needle, and the second protruding section extends along the axial direction of the valve needle.
  • the segment is connected with one end of the first protruding segment away from the lower surface of the stopper and extends along the radial direction of the valve needle, and the second protruding segment has a second stop boss.
  • the stopper further has a process hole, the process hole penetrates the stopper along the axial direction of the valve needle, and the second stop boss is on the surface of the stopper along the axial direction of the valve needle.
  • the projection is inside the process hole.
  • a reference boss is provided on the top surface of the nut, and the reference boss can abut with the lower surface of the stopper, so as to perform initial adjustment on the stopper.
  • one end of the valve needle close to the valve port has a conical surface segment, the conical surface segment cooperates with the valve port to control the opening of the valve port, and there is always a gap between the conical surface segment and the valve port .
  • the valve needle, the magnetic rotor, the stopper and the connecting sleeve are provided, and the stopper and the magnetic rotor are integrated, the connecting sleeve and the stopper are integrated, and the valve needle and the connecting sleeve are integrated, so that the four
  • the components are integrally arranged to form a synchronous movement as a whole, and the valve needle is directly matched with the nut and the connecting sleeve, and the valve needle does not need to be provided with components such as springs, thereby further simplifying the structural complexity of the electronic expansion valve.
  • connection sleeve and the connecting sleeve are injection-molded into one body, and the connecting sleeve and the valve needle can be laser welded into one body, and the processing technology has also been greatly improved, avoiding the existing process problems and improving the efficiency.
  • FIG. 1 shows a schematic structural diagram of the electronic expansion of the first embodiment of the present application
  • FIG. 2 shows a schematic structural diagram of the cooperation of the magnetic rotor and the stopper of the electronic expansion valve in FIG. 1;
  • FIG. 3 shows a schematic structural diagram of the stopper of the electronic expansion valve in FIG. 1;
  • Fig. 4 shows the structural schematic diagram of the connecting sleeve of the electronic expansion valve in Fig. 1;
  • Fig. 5 shows the structural schematic diagram of the nut of the electronic expansion valve in Fig. 1;
  • FIG. 6 shows a schematic structural diagram of the electronic expansion of the second embodiment of the present application.
  • FIG. 7 shows a schematic structural diagram of the cooperation of the magnetic rotor and the stopper of the electronic expansion valve in FIG. 6 .
  • valve seat 10, valve seat; 11, valve port; 20, nut; 21, middle stop boss; 30, valve needle; 40, magnetic rotor; 50, stopper; 51, first stop boss; 52, the first 2. Stop boss; 53. Process hole; 60. Connecting sleeve; 61. Protruding section; 62. Ring groove; 63. Notch.
  • the present application provides an electronic expansion valve.
  • An electronic expansion valve as shown in FIG. 1 to FIG. 5 includes a valve seat 10 , a nut 20 , a valve needle 30 , a magnetic rotor 40 , a stopper 50 and a connecting sleeve 60
  • the valve seat 10 has a valve port 11 ;
  • the nut 20 It is connected with the valve seat 10;
  • the valve needle 30 is penetrated in the nut 20 and can control the opening of the valve port 11;
  • the magnetic rotor 40 is rotatably arranged in the valve seat 10 and is located outside the nut 20;
  • the stopper 50 is connected with The inner wall of the magnetic rotor 40 is connected and integrally arranged with the magnetic rotor 40, and the two rotate synchronously, the valve needle 30 is passed through the stopper 50;
  • the connecting sleeve 60 is arranged between the stopper 50 and the valve needle 30, connecting The sleeve 60 , the stopper 50 and the valve needle 30 are integrally arranged and rotated synchronously.
  • a valve needle 30, a magnetic rotor 40, a stopper 50 and a connecting sleeve 60 are provided, and the stopper 50 is integrated with the magnetic rotor 40, the connecting sleeve 60 and the stopper 50 are integrated, and the valve needle 30 is integrated with the connecting sleeve.
  • 60 is integrated, so that the four components are integrally arranged to form a whole of synchronous movement, and the valve needle 30 is directly matched with the nut 20 and the connecting sleeve 60, and the valve needle 30 does not need to be provided with springs and other components, thus further simplifying the electronic The structural complexity of the expansion valve.
  • the overall structure of the electronic expansion valve is simplified, which facilitates the processing and assembly of the electronic expansion valve;
  • the device 50 and the connecting sleeve 60 are injection-molded into one body, and the connecting sleeve 60 and the valve needle 30 can be laser welded into one body.
  • the processing technology is also greatly improved, the existing process problems are avoided, and the efficiency is improved.
  • the connecting sleeve 60 is in the shape of a sleeve, and the end of the connecting sleeve 60 away from the valve port 11 has a protruding section 61 in the same annular shape.
  • the protruding section 61 protrudes from the surface of the stopper 50 away from the valve port 11, that is, the protruding section 61 at the top of the connecting sleeve 60 in FIG. Deformation by heat to improve processing technology.
  • a ring groove 62 is formed on the side of the connecting sleeve 60, and a notch 63 is formed in the ring groove 62.
  • a plane notch 63 is milled on the side of the stopper 50 to form a D-shaped mouth.
  • the inner wall of the stopper 50 has a protrusion that matches the ring groove 62 and the notch 63, and the protrusion extends into the ring groove 62 and In this way, the bonding strength of injection molding between the stopper 50 and the connecting sleeve 60 can be improved, so that the stopper 50 and the connecting sleeve 60 are well combined, and the reliability of torque transmission is ensured.
  • the connecting sleeve 60 needs to be welded with the valve needle 30, in this embodiment, the connecting sleeve 60 is set as a metal sleeve, and the stopper 50 is a plastic material, and the two can be integrally injection molded.
  • the stopper 50 in this embodiment has a non-circular structure.
  • the part of the magnetic rotor 40 that cooperates with the stopper 50 is also set to the same shape. In this way, when the magnetic rotor 40 is in the magnetic force When rotating under the action, the rotational force of the magnetic rotor 40 can be better transmitted to the stopper 50, so as to ensure that the magnetic rotor 40 is well combined with the stopper 50, and can transmit torque effectively, and avoid slippage.
  • the outer side of the nut 20 has a middle stop boss 21
  • the stopper 50 has a first stop boss 51 and a second stop boss 52
  • the first stop boss 51 is larger than the first stop boss 51
  • the second stop boss 52 is far away from the valve port 11, and the middle stop boss 21 is located between the first stop boss 51 and the second stop boss 52.
  • the magnetic rotor 40 Since the nut 20 is fixedly connected to the valve seat 10, the nut 20 is fixed, when the magnetic rotor 40 rotates under the action of magnetic force, the magnetic rotor 40 drives the stopper 50, the connecting sleeve 60 and the valve needle 30 to rotate together, at this time the first stop boss 51 and the second stop boss
  • the positional relationship between the two platforms 52 and the intermediate stopper boss 21 will change. Specifically, when the valve needle 30 moves close to the valve port 11 to the closing limit position, the first stop boss 51 abuts against the intermediate stop boss 21 , so that the valve needle 30 cannot continue to approach the valve port 11 .
  • a gap is still formed between the valve needle 30 and the valve port 11, and the gap at this time is the minimum gap that can be formed by the two; when the valve needle 30 moves away from the valve port 11 to the opening limit position, the second stop boss 52 Abutting with the intermediate stop boss 21 , so that the valve needle 30 cannot continue to be far away from the valve port 11 , so as to control the movement range of the valve needle 30 .
  • the above setting realizes the limit function of the fully closed state and the fully open state of the electronic expansion valve, which ensures that the stroke of the electronic expansion valve from fully closed to fully open is uniform and controllable, and ensures the reliability of the electronic expansion valve.
  • the stopper 50 and the nut 20 are generally made of PPS material by injection molding.
  • a gap is always formed between the valve needle 30 and the valve port 11 in this embodiment, that is to say, even if the valve needle 30 is at the closing limit position, there is still a gap between the valve needle 30 and the valve port 11, so that The electronic expansion valve has the function of closing the valve and having flow.
  • the stopper 50 of this embodiment is in the shape of a disc, and a hole for the valve needle 30 and the connecting sleeve 60 to pass through is opened at the middle position.
  • the surface on one side of the stopper 50 is the lower surface of the stopper 50 in FIG. 3 .
  • a block-like structure is directly protruded as the first stop boss 51 .
  • the first extension section extends along the axial direction of the valve needle 30, and the second extension section is connected to the first extension section.
  • the end of the segment away from the lower surface of the stopper 50 is connected and extends along the radial direction of the valve needle 30.
  • the first extension segment and the second extension segment are bent 90 degrees to connect, and the second extension segment is connected by 90 degrees. That is, there is a second stop boss 52 so as to cooperate with the middle stop boss 21 .
  • the stopper 50 further has a process hole 53 , the process hole 53 penetrates the stopper 50 along the axial direction of the valve needle 30 , that is, the process hole 53 penetrates the thickness of the stopper 50 , and the second stopper boss 52 The projection on the surface of the stopper 50 in the axial direction of the valve needle 30 is located in the process hole 53 , so as to facilitate the demoulding process of the second stopper boss 52 .
  • the top surface of the nut 20 is provided with a reference boss.
  • the reference boss can abut against the lower surface of the stopper 50, so that the stopper 50 position for initialization adjustment.
  • one end of the valve needle 30 close to the valve port 11 has a conical surface section, and the conical surface section cooperates with the valve port 11 to control the opening of the valve port 11 , and there is always a gap between the conical surface section and the valve port 11 .
  • Gap that is, when the first stop boss 51 abuts against the middle stop boss 21, a gap is still formed between the outer wall of the conical surface section and the inner wall of the valve port 11, so that the electronic expansion valve remains closed when the valve is closed.
  • the electronic expansion valve can also be set in the form of closed valve and no flow.
  • the valve seat 10 of this embodiment includes two parts, a seat body and a sleeve, which together form an accommodating cavity for accommodating components such as the valve needle 30 , the magnetic rotor 40 , the stopper 50 and the connecting sleeve 60 , and the valve seat 10 also includes a valve port seat , an opening is provided on the seat body, the valve port seat is installed at the opening, and the valve port seat forms the valve port 11 so as to cooperate with the valve needle 30 .
  • the difference from the first embodiment is that the structure of the second stop boss 52 is different.
  • the first stop boss 51 is provided on the stopper 50
  • the second stop boss 52 is not provided on the stopper 50 .
  • it is arranged on the inner side of the magnetic rotor 40 , that is, a boss radially protrudes from the inner side of the magnetic rotor 40 , and the boss is the second stop boss 52 .
  • the first extension section and the second extension section may not be provided, that is, the disc-shaped stopper 50 only needs to be
  • the first stop boss 51 may be provided on the lower surface.
  • a plurality in the above-mentioned embodiments refers to at least two.

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

Abstract

An electronic expansion valve, comprising: a valve base (10), the valve base (10) being provided with a valve port (11); a nut (20), the nut (20) being connected to the valve base (10); a valve needle (30), the valve needle (30) being provided in the nut (20) in a penetrating manner and capable of controlling the opening degree of the valve port (11); a magnetic rotor (40), the magnetic rotor (40) being rotatably provided in the valve base (10) and located outside the nut (20); a stop (50), the stop (50) being connected to an inner wall of the magnetic rotor (40) and integrated with the magnetic rotor (40), the stop (50) and the magnetic rotor (40) synchronously rotating, and the valve needle (30) being provided on the stop (50) in a penetrating manner; and a connecting sleeve (60), the connecting sleeve (60) being provided between the stop (50) and the valve needle (30), the connecting sleeve (60), stop (50), and valve needle (30) being integrated and synchronously rotating. By means of the valve, the problem in the prior art that the structure of electronic expansion valves is complicated is solved.

Description

电子膨胀阀Electronic expansion valve 技术领域technical field
本申请涉及阀门技术领域，具体而言，涉及一种电子膨胀阀。The present application relates to the technical field of valves, in particular, to an electronic expansion valve.
背景技术Background technique
现有的电子膨胀阀结构，其转子连接板与磁钢一体注塑，而止动器注塑好之后需要与转子连接板的定位孔装配并热熔铆接在一起(3个热熔点)，此工艺较为复杂且稳定性不够好，另外转子连接板需要与螺杆进行焊接固定，焊接时由于距离太近会烧伤止动器。In the existing electronic expansion valve structure, the rotor connecting plate and the magnetic steel are integrally injected, and the stopper needs to be assembled with the positioning hole of the rotor connecting plate after injection molding and hot-melt riveted together (3 hot melting points). This process is relatively It is complicated and the stability is not good enough. In addition, the rotor connecting plate needs to be welded and fixed with the screw. When welding, the stopper will be burned due to the close distance.
现有技术中的电子膨胀阀为了实现全闭无流量，利用预紧弹簧的预压缩量使阀针的锥面能够有效与阀口接触，保证密封可靠性，因此预紧弹簧成为不可缺少的零件。In order to achieve full closure and no flow, the electronic expansion valve in the prior art uses the pre-compression of the pre-tightening spring to enable the conical surface of the valve needle to effectively contact the valve port to ensure sealing reliability. Therefore, the pre-tightening spring becomes an indispensable part. .
由上述可知，现有的电子膨胀阀的结构较为复杂，工艺较为复杂且稳定性不好。It can be seen from the above that the structure of the existing electronic expansion valve is relatively complicated, the process is relatively complicated and the stability is not good.
发明内容SUMMARY OF THE INVENTION
本申请的主要目的在于提供一种电子膨胀阀，以解决现有技术中电子膨胀阀的结构较为复杂的问题。The main purpose of the present application is to provide an electronic expansion valve to solve the problem that the structure of the electronic expansion valve in the prior art is relatively complex.
为了实现上述目的，根据本申请的一个可选的实施方式，提供了一种电子膨胀阀，包括：阀座，阀座具有阀口；螺母，螺母与阀座连接；阀针，阀针穿设在螺母内，并能够控制阀口的开度；磁转子，磁转子可转动地设置在阀座内，并且位于螺母外侧；止动器，止动器与磁转子的内壁连接，并与磁转子一体设置，且二者同步转动，阀针穿设在止动器上；连接套，连接套设置在止动器和阀针之间，连接套、止动器和阀针三者一体设置，且三者同步转动。In order to achieve the above purpose, according to an optional embodiment of the present application, an electronic expansion valve is provided, which includes: a valve seat, the valve seat has a valve port; a nut, the nut is connected with the valve seat; a valve needle, which passes through the valve needle inside the nut, and can control the opening of the valve port; the magnetic rotor, which is rotatably arranged in the valve seat and is located outside the nut; the stopper, the stopper is connected with the inner wall of the magnetic rotor, and is connected with the magnetic rotor It is integrally arranged, and the two rotate synchronously, and the valve needle is worn on the stopper; the connecting sleeve, the connecting sleeve is arranged between the stopper and the valve needle, and the connecting sleeve, the stopper and the valve needle are integrally arranged, and The three rotate synchronously.
在一个可选的实施例方式中，连接套远离阀口一端的具有突出段，突出段包围阀针的周侧，并且突出段凸出于止动器远离阀口一侧的表面。In an optional embodiment, one end of the connecting sleeve away from the valve port has a protruding section, the protruding section surrounds the peripheral side of the valve needle, and the protruding section protrudes from the surface of the stopper on the side away from the valve port.
在一个可选的实施例方式中，连接套的侧面开设有环槽，环槽内设置有缺口，止动器的内壁具有凸起，凸起伸入至环槽以及缺口内。In an optional embodiment, a side surface of the connecting sleeve is provided with a ring groove, a gap is formed in the ring groove, an inner wall of the stopper has a protrusion, and the protrusion protrudes into the ring groove and the gap.
在一个可选的实施例方式中，止动器呈非圆形结构。In an alternative embodiment, the stopper has a non-circular configuration.
在一个可选的实施例方式中，连接套为金属套。In an optional embodiment, the connection sleeve is a metal sleeve.
在一个可选的实施例方式中，螺母外侧具有中间止挡凸台，止动器具有第一止挡凸台，止动器或磁转子具有第二止挡凸台，且中间止挡凸台位于第一止挡凸台和第二止挡凸台之间，当磁转子、止动器、连接套和阀针一同转动至关闭极限位置或打开极限位置时，第一止挡凸台或第二止挡凸台与中间止挡凸台抵接，以控制阀针的运动范围。In an optional embodiment, the outer side of the nut has a middle stop boss, the stopper has a first stop boss, the stopper or the magnetic rotor has a second stop boss, and the middle stop boss Located between the first stop boss and the second stop boss, when the magnetic rotor, the stopper, the connecting sleeve and the valve needle rotate together to the close limit position or the open limit position, the first stop boss or the first stop boss The second stop boss abuts against the middle stop boss to control the movement range of the valve needle.
在一个可选的实施例方式中，止动器的下表面具有顺次连接的第一伸出段和第二伸出段，第一伸出段沿阀针的轴向延伸，第二伸出段与第一伸出段远离止动器下表面的一端连接，并沿阀针的径向延伸，第二伸出段具有第二止挡凸台。In an optional embodiment, the lower surface of the stopper has a first protruding section and a second protruding section connected in sequence, the first protruding section extends along the axial direction of the valve needle, and the second protruding section extends along the axial direction of the valve needle. The segment is connected with one end of the first protruding segment away from the lower surface of the stopper and extends along the radial direction of the valve needle, and the second protruding segment has a second stop boss.
在一个可选的实施例方式中，止动器还具有工艺孔，工艺孔沿阀针的轴向贯穿止动器，且第二止挡凸台沿阀针轴向在止动器表面上的投影位于工艺孔内。In an optional embodiment, the stopper further has a process hole, the process hole penetrates the stopper along the axial direction of the valve needle, and the second stop boss is on the surface of the stopper along the axial direction of the valve needle. The projection is inside the process hole.
在一个可选的实施例方式中，螺母的顶部表面设置有基准凸台，基准凸台能够与止动器的下表面抵接，以对止动器进行初始化调整。In an optional embodiment, a reference boss is provided on the top surface of the nut, and the reference boss can abut with the lower surface of the stopper, so as to perform initial adjustment on the stopper.
在一个可选的实施例方式中，阀针靠近阀口的一端具有锥面段，锥面段与阀口配合，以控制阀口的开度，且锥面段与阀口之间始终具有间隙。In an optional embodiment, one end of the valve needle close to the valve port has a conical surface segment, the conical surface segment cooperates with the valve port to control the opening of the valve port, and there is always a gap between the conical surface segment and the valve port .
应用本申请的技术方案，通过设置有阀针、磁转子、止动器和连接套，并且止动器与磁转子一体、连接套与止动器一体，阀针与连接套一体，从而使得四个部件之间一体设置，形成一个同步运动的整体，并且阀针直接与螺母和连接套进行配合，阀针不需要设置弹簧等部件，从而进一步简化了电子膨胀阀的结构复杂程度。通过上述设置方式，一方面，简化了电子膨胀阀整体的结构，便于电子膨胀阀的加工和组装，另一方面由于整体结构的简化，使得电子膨胀阀在加工组装时将磁转子、止动器和连接套三者注塑成一体，将连接套与阀针激光焊焊接成一体即可，加工工艺也得到极大的改善，规避现有的工艺问题，提高效率。By applying the technical solution of the present application, the valve needle, the magnetic rotor, the stopper and the connecting sleeve are provided, and the stopper and the magnetic rotor are integrated, the connecting sleeve and the stopper are integrated, and the valve needle and the connecting sleeve are integrated, so that the four The components are integrally arranged to form a synchronous movement as a whole, and the valve needle is directly matched with the nut and the connecting sleeve, and the valve needle does not need to be provided with components such as springs, thereby further simplifying the structural complexity of the electronic expansion valve. Through the above arrangement, on the one hand, the overall structure of the electronic expansion valve is simplified, which facilitates the processing and assembly of the electronic expansion valve; The connection sleeve and the connecting sleeve are injection-molded into one body, and the connecting sleeve and the valve needle can be laser welded into one body, and the processing technology has also been greatly improved, avoiding the existing process problems and improving the efficiency.
附图说明Description of drawings
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：The accompanying drawings that form a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute improper limitations on the present application. In the attached image:
图1示出了本申请的实施例一的电子膨胀的结构示意图；FIG. 1 shows a schematic structural diagram of the electronic expansion of the first embodiment of the present application;
图2示出了图1中的电子膨胀阀的磁转子和止动器配合的结构示意图；FIG. 2 shows a schematic structural diagram of the cooperation of the magnetic rotor and the stopper of the electronic expansion valve in FIG. 1;
图3示出了图1中的电子膨胀阀的止动器的结构示意图；FIG. 3 shows a schematic structural diagram of the stopper of the electronic expansion valve in FIG. 1;
图4示出了图1中的电子膨胀阀的连接套的结构示意图；Fig. 4 shows the structural schematic diagram of the connecting sleeve of the electronic expansion valve in Fig. 1;
图5示出了图1中的电子膨胀阀的螺母的结构示意图；Fig. 5 shows the structural schematic diagram of the nut of the electronic expansion valve in Fig. 1;
图6示出了本申请的实施例二的电子膨胀的结构示意图；FIG. 6 shows a schematic structural diagram of the electronic expansion of the second embodiment of the present application;
图7示出了图6中的电子膨胀阀的磁转子和止动器配合的结构示意图。FIG. 7 shows a schematic structural diagram of the cooperation of the magnetic rotor and the stopper of the electronic expansion valve in FIG. 6 .
其中，上述附图包括以下附图标记：Wherein, the above-mentioned drawings include the following reference signs:
10、阀座；11、阀口；20、螺母；21、中间止挡凸台；30、阀针；40、磁转子；50、止动器；51、第一止挡凸台；52、第二止挡凸台；53、工艺孔；60、连接套；61、突出段；62、环槽；63、缺口。10, valve seat; 11, valve port; 20, nut; 21, middle stop boss; 30, valve needle; 40, magnetic rotor; 50, stopper; 51, first stop boss; 52, the first 2. Stop boss; 53. Process hole; 60. Connecting sleeve; 61. Protruding section; 62. Ring groove; 63. Notch.
具体实施方式detailed description
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申请。It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
为了解决现有技术中电子膨胀阀的结构较为复杂的问题，本申请提供了一种电子膨胀阀。In order to solve the problem of the complicated structure of the electronic expansion valve in the prior art, the present application provides an electronic expansion valve.
实施例一Example 1
如图1至图5所示的一种电子膨胀阀，包括阀座10、螺母20、阀针30、磁转子40、止动器50和连接套60，阀座10具有阀口11；螺母20与阀座10连接；阀针30穿设在螺母20内，并能够控制阀口11的开度；磁转子40可转动地设置在阀座10内，并且位于螺母20外侧；止动器50与磁转子40的内壁连接，并与磁转子40一体设置，且二者同步转动，阀针30穿设在止动器50上；连接套60设置在止动器50和阀针30之间，连接套60、止动器50和阀针30三者一体设置，且三者同步转动。An electronic expansion valve as shown in FIG. 1 to FIG. 5 includes a valve seat 10 , a nut 20 , a valve needle 30 , a magnetic rotor 40 , a stopper 50 and a connecting sleeve 60 , the valve seat 10 has a valve port 11 ; the nut 20 It is connected with the valve seat 10; the valve needle 30 is penetrated in the nut 20 and can control the opening of the valve port 11; the magnetic rotor 40 is rotatably arranged in the valve seat 10 and is located outside the nut 20; the stopper 50 is connected with The inner wall of the magnetic rotor 40 is connected and integrally arranged with the magnetic rotor 40, and the two rotate synchronously, the valve needle 30 is passed through the stopper 50; the connecting sleeve 60 is arranged between the stopper 50 and the valve needle 30, connecting The sleeve 60 , the stopper 50 and the valve needle 30 are integrally arranged and rotated synchronously.
本实施例通过设置有阀针30、磁转子40、止动器50和连接套60，并且止动器50与磁转子40一体、连接套60与止动器50一体，阀针30与连接套60一体，从而使得四个部件之间一体设置，形成一个同步运动的整体，并且阀针30直接与螺母20和连接套60进行配合，阀针30不需要设置弹簧等部件，从而进一步简化了电子膨胀阀的结构复杂程度。通过上述设置方式，一方面，简化了电子膨胀阀整体的结构，便于电子膨胀阀的加工和组装，另一方面由于整体结构的简化，使得电子膨胀阀在加工组装时将磁转子40、止动器50和连接套60三者注塑成一体，将连接套60与阀针30激光焊焊接成一体即可，加工工艺也得到极大的改善，规避现有的工艺问题，提高效率。In this embodiment, a valve needle 30, a magnetic rotor 40, a stopper 50 and a connecting sleeve 60 are provided, and the stopper 50 is integrated with the magnetic rotor 40, the connecting sleeve 60 and the stopper 50 are integrated, and the valve needle 30 is integrated with the connecting sleeve. 60 is integrated, so that the four components are integrally arranged to form a whole of synchronous movement, and the valve needle 30 is directly matched with the nut 20 and the connecting sleeve 60, and the valve needle 30 does not need to be provided with springs and other components, thus further simplifying the electronic The structural complexity of the expansion valve. Through the above arrangement, on the one hand, the overall structure of the electronic expansion valve is simplified, which facilitates the processing and assembly of the electronic expansion valve; The device 50 and the connecting sleeve 60 are injection-molded into one body, and the connecting sleeve 60 and the valve needle 30 can be laser welded into one body. The processing technology is also greatly improved, the existing process problems are avoided, and the efficiency is improved.
如图1和图4所示，连接套60呈套筒状，连接套60远离阀口11一端的具有同样呈环形的突出段61，突出段61套设并包围阀针30的周侧，并且突出段61凸出于止动器50远离阀口11一侧的表面，即图2中连接套60顶部的突出段61高于止动器50的上表面，这样即可避免焊接时连接套60受热变形，改善加工工艺。As shown in FIG. 1 and FIG. 4 , the connecting sleeve 60 is in the shape of a sleeve, and the end of the connecting sleeve 60 away from the valve port 11 has a protruding section 61 in the same annular shape. The protruding section 61 protrudes from the surface of the stopper 50 away from the valve port 11, that is, the protruding section 61 at the top of the connecting sleeve 60 in FIG. Deformation by heat to improve processing technology.
本实施例在连接套60的侧面开设有环槽62，环槽62内设置有缺口63，具体而言是通过车加工的方式在连接套60的侧面铣了一个环槽62，并且环槽62的侧面铣了一个平面形的缺口63，从而形成D型口，相应地，在止动器50的内壁具有与环槽62和缺口63相配合的凸起，凸起伸入至环槽62以及缺口63内，这样即可提高止动器50与连接套60之间注塑的结合强度，保证止动器50与连接套60结合良好，保证传递扭矩的可靠性。In this embodiment, a ring groove 62 is formed on the side of the connecting sleeve 60, and a notch 63 is formed in the ring groove 62. A plane notch 63 is milled on the side of the stopper 50 to form a D-shaped mouth. Correspondingly, the inner wall of the stopper 50 has a protrusion that matches the ring groove 62 and the notch 63, and the protrusion extends into the ring groove 62 and In this way, the bonding strength of injection molding between the stopper 50 and the connecting sleeve 60 can be improved, so that the stopper 50 and the connecting sleeve 60 are well combined, and the reliability of torque transmission is ensured.
优选地，由于连接套60需要与阀针30之间进行焊接，因而本实施例将连接套60设置成金属套，而止动器50为塑料材质件，二者一体注塑成型即可。Preferably, since the connecting sleeve 60 needs to be welded with the valve needle 30, in this embodiment, the connecting sleeve 60 is set as a metal sleeve, and the stopper 50 is a plastic material, and the two can be integrally injection molded.
如图3所示，本实施例的止动器50呈非圆形结构，相应地，磁转子40上与止动器50配合的部分也设置成相同的形状，这样，当磁转子40在磁力作用下转动时，磁转子40的转动力能够更好地传递给止动器50，保证磁转子40与止动器50结合良好，且能有效传递扭矩，避免出现打滑的情况。As shown in FIG. 3 , the stopper 50 in this embodiment has a non-circular structure. Correspondingly, the part of the magnetic rotor 40 that cooperates with the stopper 50 is also set to the same shape. In this way, when the magnetic rotor 40 is in the magnetic force When rotating under the action, the rotational force of the magnetic rotor 40 can be better transmitted to the stopper 50, so as to ensure that the magnetic rotor 40 is well combined with the stopper 50, and can transmit torque effectively, and avoid slippage.
如图3和图5所示，螺母20外侧具有中间止挡凸台21，止动器50具有第一止挡凸台51和第二止挡凸台52，且第一止挡凸台51比第二止挡凸台52远离阀口11，中间止挡凸台21位于第一止挡凸台51和第二止挡凸台52之间，由于螺母20相对于阀座10固定连接，因而螺母20固定不动，当磁转子40在磁力作用下转动时，磁转子40带动止动器50、连接套60和阀针30一同转动，此时第一止挡凸台51和第二止挡凸台52二者与中间止挡凸台21之间的位置关系就会发生变化。具体而言，当阀针30靠近阀口11运动至关闭极限位置时，第一止挡凸台51与中间止挡凸台21抵接，从而使得阀针30无法继续靠近阀口11，此时阀针30与阀口11之间依旧形成有间隙，且此时的间隙为二者能够形成的最小间隙；当阀针30远离阀口11运动至打开极限位置时，第二止挡凸台52与中间止挡凸台21抵接，从而使得阀针30无法继续远离阀口11，实现控制阀针30的运动范围。通过上述设置实现电子膨胀阀全闭状态和全开状态两个位置的限位功能，保证了电子膨胀阀由全闭到全开的行程统一且可控，保证电子膨胀阀工作的可靠性。As shown in FIG. 3 and FIG. 5 , the outer side of the nut 20 has a middle stop boss 21 , the stopper 50 has a first stop boss 51 and a second stop boss 52 , and the first stop boss 51 is larger than the first stop boss 51 . The second stop boss 52 is far away from the valve port 11, and the middle stop boss 21 is located between the first stop boss 51 and the second stop boss 52. Since the nut 20 is fixedly connected to the valve seat 10, the nut 20 is fixed, when the magnetic rotor 40 rotates under the action of magnetic force, the magnetic rotor 40 drives the stopper 50, the connecting sleeve 60 and the valve needle 30 to rotate together, at this time the first stop boss 51 and the second stop boss The positional relationship between the two platforms 52 and the intermediate stopper boss 21 will change. Specifically, when the valve needle 30 moves close to the valve port 11 to the closing limit position, the first stop boss 51 abuts against the intermediate stop boss 21 , so that the valve needle 30 cannot continue to approach the valve port 11 . A gap is still formed between the valve needle 30 and the valve port 11, and the gap at this time is the minimum gap that can be formed by the two; when the valve needle 30 moves away from the valve port 11 to the opening limit position, the second stop boss 52 Abutting with the intermediate stop boss 21 , so that the valve needle 30 cannot continue to be far away from the valve port 11 , so as to control the movement range of the valve needle 30 . The above setting realizes the limit function of the fully closed state and the fully open state of the electronic expansion valve, which ensures that the stroke of the electronic expansion valve from fully closed to fully open is uniform and controllable, and ensures the reliability of the electronic expansion valve.
由于限位时是物理接触，因此对上述三个止挡凸台的材质强度提出了较高要求，止动器50和螺母20一般使用PPS材质注塑而成。Since the limit is physical contact, higher requirements are placed on the material strength of the above-mentioned three stopper bosses. The stopper 50 and the nut 20 are generally made of PPS material by injection molding.
需要说明的是，本实施例的阀针30与阀口11之间始终形成有间隙，也就是说，即使阀针30位于关闭极限位置，阀针30与阀口11之间依旧有间隙，从而使得电子膨胀阀具有闭阀有流量的功能。It should be noted that a gap is always formed between the valve needle 30 and the valve port 11 in this embodiment, that is to say, even if the valve needle 30 is at the closing limit position, there is still a gap between the valve needle 30 and the valve port 11, so that The electronic expansion valve has the function of closing the valve and having flow.
本实施例的止动器50呈盘状，其中间位置处开设有供阀针30和连接套60穿过的孔，在其一侧的表面，即图3中的止动器50的下表面直接凸出一块状结构作为第一止挡凸台51。同样在该侧，还具有顺次且弯折连接的第一伸出段和第二伸出段，第一伸出段沿阀针30的轴向延伸，第二伸出段与第一伸出段远离止动器50下表面的一端连接，并沿阀针30的径向延伸，本实施例将第一伸出段和第二伸出段之间折弯90度连接，第二伸出段即具有第二止挡凸台52，从而与中间止挡凸台21进行配合。The stopper 50 of this embodiment is in the shape of a disc, and a hole for the valve needle 30 and the connecting sleeve 60 to pass through is opened at the middle position. The surface on one side of the stopper 50 is the lower surface of the stopper 50 in FIG. 3 . A block-like structure is directly protruded as the first stop boss 51 . Also on this side, there are also a first extension section and a second extension section that are connected in sequence and bent. The first extension section extends along the axial direction of the valve needle 30, and the second extension section is connected to the first extension section. The end of the segment away from the lower surface of the stopper 50 is connected and extends along the radial direction of the valve needle 30. In this embodiment, the first extension segment and the second extension segment are bent 90 degrees to connect, and the second extension segment is connected by 90 degrees. That is, there is a second stop boss 52 so as to cooperate with the middle stop boss 21 .
可选地，止动器50还具有工艺孔53，工艺孔53沿阀针30的轴向贯穿止动器50，即工艺孔53贯穿止动器50的厚度，且第二止挡凸台52沿阀针30轴向在止动器50表面上的投影位于工艺孔53内，从而便于第二止挡凸台52的脱模加工。Optionally, the stopper 50 further has a process hole 53 , the process hole 53 penetrates the stopper 50 along the axial direction of the valve needle 30 , that is, the process hole 53 penetrates the thickness of the stopper 50 , and the second stopper boss 52 The projection on the surface of the stopper 50 in the axial direction of the valve needle 30 is located in the process hole 53 , so as to facilitate the demoulding process of the second stopper boss 52 .
在本实施例中，螺母20的顶部表面设置有基准凸台，在对电子膨胀阀的各部件进行初始化调整时，基准凸台能够与止动器50的下表面抵接，以对止动器50的位置进行初始化调整。In the present embodiment, the top surface of the nut 20 is provided with a reference boss. When initializing and adjusting each component of the electronic expansion valve, the reference boss can abut against the lower surface of the stopper 50, so that the stopper 50 position for initialization adjustment.
在本实施例中，阀针30靠近阀口11的一端具有锥面段，锥面段与阀口11配合，以控制阀口11的开度，且锥面段与阀口11之间始终具有间隙，即当第一止挡凸台51与中间止挡凸台21抵接时，锥面段的外壁与阀口11的内壁之间依旧形成有一间隙，从而使得电子膨胀阀在闭阀时依旧可以有流量。当然，也可以将电子膨胀阀设置成闭阀无流量的形式。In this embodiment, one end of the valve needle 30 close to the valve port 11 has a conical surface section, and the conical surface section cooperates with the valve port 11 to control the opening of the valve port 11 , and there is always a gap between the conical surface section and the valve port 11 . Gap, that is, when the first stop boss 51 abuts against the middle stop boss 21, a gap is still formed between the outer wall of the conical surface section and the inner wall of the valve port 11, so that the electronic expansion valve remains closed when the valve is closed. There can be traffic. Of course, the electronic expansion valve can also be set in the form of closed valve and no flow.
本实施例的阀座10包括座体和套筒两部分，二者共同形成容纳阀针30、磁转子40、止动器50和连接套60等部件的容纳腔，阀座10还包括阀口座，在座体上设置有一开口，阀口座安装在开口处，并且阀口座形成阀口11，从而与阀针30之间配合。The valve seat 10 of this embodiment includes two parts, a seat body and a sleeve, which together form an accommodating cavity for accommodating components such as the valve needle 30 , the magnetic rotor 40 , the stopper 50 and the connecting sleeve 60 , and the valve seat 10 also includes a valve port seat , an opening is provided on the seat body, the valve port seat is installed at the opening, and the valve port seat forms the valve port 11 so as to cooperate with the valve needle 30 .
实施例二Embodiment 2
与实施例一的区别在于，第二止挡凸台52的结构不同。The difference from the first embodiment is that the structure of the second stop boss 52 is different.
如图6和图7所示，在本实施例中，止动器50上仅设置有第一止挡凸台51，而第二止挡凸台52并非是设置在止动器50上的，而是设置在磁转子40的内侧，即磁转子40的内侧径向伸出一凸台，该凸台即为第二止挡凸台52。采用该种设置方式时，由于止动器50上未设置第二止挡凸台52，因而第一伸出段和第二伸出段也可以不设置，即盘状的止动器50只需要在下表面设置第一止挡凸台51即可。As shown in FIG. 6 and FIG. 7 , in this embodiment, only the first stop boss 51 is provided on the stopper 50 , and the second stop boss 52 is not provided on the stopper 50 . Instead, it is arranged on the inner side of the magnetic rotor 40 , that is, a boss radially protrudes from the inner side of the magnetic rotor 40 , and the boss is the second stop boss 52 . When this arrangement is adopted, since the second stopper boss 52 is not provided on the stopper 50, the first extension section and the second extension section may not be provided, that is, the disc-shaped stopper 50 only needs to be The first stop boss 51 may be provided on the lower surface.
需要说明的是，上述实施例中的多个指的是至少两个。It should be noted that a plurality in the above-mentioned embodiments refers to at least two.
从以上的描述中，可以看出，本申请上述的实施例实现了如下技术效果：From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:
1、解决了现有技术中电子膨胀阀的结构较为复杂的问题；1. Solve the problem that the structure of the electronic expansion valve in the prior art is relatively complicated;
2、简化了电子膨胀阀整体的结构，便于电子膨胀阀的加工和组装；2. The overall structure of the electronic expansion valve is simplified, which facilitates the processing and assembly of the electronic expansion valve;
3、电子膨胀阀在加工组装时将磁转子、止动器和连接套三者注塑成一体，将连接套与阀针激光焊焊接成一体即可，加工工艺也得到极大的改善，规避现有的工艺问题，提高效率；3. When the electronic expansion valve is processed and assembled, the magnetic rotor, the stopper and the connecting sleeve are injected into one body, and the connecting sleeve and the valve needle can be laser welded into one body. The processing technology has also been greatly improved, avoiding the current situation. Some process problems, improve efficiency;
4、避免焊接时连接套受热变形，改善加工工艺；4. Avoid the thermal deformation of the connecting sleeve during welding, and improve the processing technology;
5、保证磁转子与止动器结合良好，且能有效传递扭矩，避免出现打滑的情况；5. Ensure that the magnetic rotor and the stopper are well combined, and can effectively transmit torque to avoid slippage;
6、实现电子膨胀阀全闭状态和全开状态两个位置的限位功能，保证了电子膨胀阀由全闭到全开的行程统一且可控，保证电子膨胀阀工作的可靠性。6. The limit function of the fully closed state and the fully open state of the electronic expansion valve is realized, which ensures the uniform and controllable stroke of the electronic expansion valve from fully closed to fully open, and ensures the reliability of the electronic expansion valve.
显然，上述所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。Obviously, the above-described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims (10)

  1. 一种电子膨胀阀，其特征在于，包括：An electronic expansion valve, characterized in that, comprising:
    阀座(10)，所述阀座(10)具有阀口(11)；a valve seat (10), the valve seat (10) having a valve port (11);
    螺母(20)，所述螺母(20)与所述阀座(10)连接；a nut (20), the nut (20) is connected with the valve seat (10);
    阀针(30)，所述阀针(30)穿设在所述螺母(20)内，并能够控制所述阀口(11)的开度；a valve needle (30), the valve needle (30) is penetrated in the nut (20) and can control the opening of the valve port (11);
    磁转子(40)，所述磁转子(40)可转动地设置在所述阀座(10)内，并且位于所述螺母(20)外侧；a magnetic rotor (40), the magnetic rotor (40) being rotatably arranged in the valve seat (10) and located outside the nut (20);
    止动器(50)，所述止动器(50)与所述磁转子(40)的内壁连接，并与所述磁转子(40)一体设置，且二者同步转动，所述阀针(30)穿设在所述止动器(50)上；A stopper (50), the stopper (50) is connected to the inner wall of the magnetic rotor (40), and is integrally arranged with the magnetic rotor (40), and the two rotate synchronously, and the valve needle ( 30) wear on the stopper (50);
    连接套(60)，所述连接套(60)设置在所述止动器(50)和所述阀针(30)之间，所述连接套(60)、所述止动器(50)和所述阀针(30)三者一体设置，且三者同步转动。A connecting sleeve (60), the connecting sleeve (60) is arranged between the stopper (50) and the valve needle (30), the connecting sleeve (60), the stopper (50) The valve needle (30) and the valve needle (30) are integrally arranged and rotate synchronously.
  2. 根据权利要求1所述的电子膨胀阀，其特征在于，所述连接套(60)远离所述阀口(11)一端的具有突出段(61)，所述突出段(61)包围所述阀针(30)的周侧，并且所述突出段(61)凸出于所述止动器(50)远离所述阀口(11)一侧的表面。The electronic expansion valve according to claim 1, characterized in that, one end of the connecting sleeve (60) away from the valve port (11) has a protruding section (61), and the protruding section (61) surrounds the valve The peripheral side of the needle (30), and the protruding section (61) protrudes from the surface of the stopper (50) on the side away from the valve port (11).
  3. 根据权利要求1所述的电子膨胀阀，其特征在于，所述连接套(60)的侧面开设有环槽(62)，所述环槽(62)内设置有缺口(63)，所述止动器(50)的内壁具有凸起，所述凸起伸入至所述环槽(62)以及所述缺口(63)内。The electronic expansion valve according to claim 1, characterized in that a ring groove (62) is formed on the side of the connecting sleeve (60), a gap (63) is formed in the ring groove (62), and the stop The inner wall of the actuator (50) has protrusions, and the protrusions protrude into the annular groove (62) and the gap (63).
  4. 根据权利要求1所述的电子膨胀阀，其特征在于，所述止动器(50)呈非圆形结构。The electronic expansion valve according to claim 1, wherein the stopper (50) has a non-circular structure.
  5. 根据权利要求1所述的电子膨胀阀，其特征在于，所述连接套(60)为金属套。The electronic expansion valve according to claim 1, wherein the connecting sleeve (60) is a metal sleeve.
  6. 根据权利要求1所述的电子膨胀阀，其特征在于，所述螺母(20)外侧具有中间止挡凸台(21)，所述止动器(50)具有第一止挡凸台(51)，所述止动器(50)或所述磁转子(40)具有第二止挡凸台(52)，且所述中间止挡凸台(21)位于所述第一止挡凸台(51)和所述第二止挡凸台(52)之间，当所述磁转子(40)、所述止动器(50)、所述连接套(60)和所述阀针(30)一同转动至关闭极限位置或打开极限位置时，所述第一止挡凸台(51)或所述第二止挡凸台(52)与所述中间止挡凸台(21)抵接，以控制所述阀针(30)的运动范围。The electronic expansion valve according to claim 1, characterized in that, the outer side of the nut (20) has a middle stop boss (21), and the stopper (50) has a first stop boss (51) , the stopper (50) or the magnetic rotor (40) has a second stop boss (52), and the intermediate stop boss (21) is located on the first stop boss (51) ) and the second stop boss (52), when the magnetic rotor (40), the stopper (50), the connecting sleeve (60) and the valve needle (30) are together When rotated to the close limit position or the open limit position, the first stop boss (51) or the second stop boss (52) abuts against the intermediate stop boss (21) to control the The movement range of the valve needle (30).
  7. 根据权利要求6所述的电子膨胀阀，其特征在于，所述止动器(50)的下表面具有顺次连接的第一伸出段和第二伸出段，所述第一伸出段沿阀针(30)的轴向延伸，所述第二伸出段与所述第一伸出段远离所述止动器(50)下表面的一端连接，并沿所述阀针(30)的径向延伸，所述第二伸出段具有所述第二止挡凸台(52)。The electronic expansion valve according to claim 6, characterized in that, the lower surface of the stopper (50) has a first protruding section and a second protruding section connected in sequence, and the first protruding section Extending along the axial direction of the valve needle (30), the second protruding section is connected with one end of the first protruding section away from the lower surface of the stopper (50), and is extended along the valve needle (30) The radial extension of the second projecting section has the second stop boss (52).
  8. 根据权利要求7所述的电子膨胀阀，其特征在于，所述止动器(50)还具有工艺孔(53)，所述工艺孔(53)沿所述阀针(30)的轴向贯穿所述止动器(50)，且所述第二止挡凸台 (52)沿所述阀针(30)轴向在所述止动器(50)表面上的投影位于所述工艺孔(53)内。The electronic expansion valve according to claim 7, characterized in that, the stopper (50) further has a process hole (53), and the process hole (53) penetrates along the axial direction of the valve needle (30). the stopper (50), and the projection of the second stopper boss (52) on the surface of the stopper (50) in the axial direction of the valve needle (30) is located in the process hole ( 53) within.
  9. 根据权利要求1所述的电子膨胀阀，其特征在于，所述螺母(20)的顶部表面设置有基准凸台，所述基准凸台能够与所述止动器(50)的下表面抵接，以对所述止动器(50)进行初始化调整。The electronic expansion valve according to claim 1, characterized in that, a reference boss is provided on the top surface of the nut (20), and the reference boss can abut against the lower surface of the stopper (50). , to initialize and adjust the stopper (50).
  10. 根据权利要求1所述的电子膨胀阀，其特征在于，所述阀针(30)靠近所述阀口(11)的一端具有锥面段，所述锥面段与所述阀口(11)配合，以控制所述阀口(11)的开度，且所述锥面段与所述阀口(11)之间始终具有间隙。The electronic expansion valve according to claim 1, characterized in that, one end of the valve needle (30) close to the valve port (11) has a conical surface section, and the conical surface section is connected to the valve port (11) In order to control the opening of the valve port (11), there is always a gap between the conical surface section and the valve port (11).
PCT/CN2021/103189 2020-08-31 2021-06-29 Electronic expansion valve WO2022042006A1 (en)

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CN212959909U (en) * 2020-08-31 2021-04-13 盾安环境技术有限公司 Electronic expansion valve
CN216242310U (en) * 2021-11-19 2022-04-08 浙江盾安禾田金属有限公司 Electronic expansion valve

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