CN215983358U - Electronic expansion valve and air conditioning unit thereof - Google Patents

Electronic expansion valve and air conditioning unit thereof Download PDF

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Publication number
CN215983358U
CN215983358U CN202122088665.0U CN202122088665U CN215983358U CN 215983358 U CN215983358 U CN 215983358U CN 202122088665 U CN202122088665 U CN 202122088665U CN 215983358 U CN215983358 U CN 215983358U
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CN
China
Prior art keywords
valve
nut
electronic expansion
needle
screw
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Active
Application number
CN202122088665.0U
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Chinese (zh)
Inventor
陈勇好
贺宇辰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Dunan Artificial Environment Co Ltd
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Zhejiang Dunan Artificial Environment Co Ltd
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Priority to CN202122088665.0U priority Critical patent/CN215983358U/en
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Publication of CN215983358U publication Critical patent/CN215983358U/en
Priority to KR1020220062772A priority patent/KR20230032854A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/005—Particular materials for seats or closure elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06—Details of flow restrictors or 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lift Valve (AREA)
  • Valve Housings (AREA)

Abstract

The utility model relates to the technical field of refrigeration, in particular to an electronic expansion valve and an air conditioning unit thereof. An electronic expansion valve comprises a valve seat, a valve needle and a nut, wherein at least part of the nut is sleeved outside the valve needle and penetrates through the valve seat, a flow channel is arranged in the valve seat, a valve port and a first opening are formed in the valve seat, and the valve port and the first opening are respectively communicated with the flow channel; the nut comprises a guide section, the guide section is sleeved outside the valve needle, and one end, close to the valve port, of the guide section extends into the flow channel. The utility model has the advantages that: the part that the guide section stretches into in the runner can play the guard action to the needle, prevents that the needle from receiving the direct impact of medium and rocking to guarantee the stability of needle.

Description

Electronic expansion valve and air conditioning unit thereof
Technical Field
The utility model relates to the technical field of refrigeration, in particular to an electronic expansion valve and an air conditioning unit thereof.
Background
The electronic expansion valve is one of four major components of a refrigeration cycle system, performs the function of throttling and depressurizing by changing the throttling cross section to control the flow of a refrigerant, and is generally installed between a condenser and an evaporator.
The valve needle of the existing electronic expansion valve is impacted by a medium to generate vibration.
SUMMERY OF THE UTILITY MODEL
Based on this, the present invention provides an electronic expansion valve, aiming at the above technical problems, and the technical scheme is as follows:
an electronic expansion valve comprises a valve seat, a valve needle and a nut, wherein at least part of the nut is sleeved outside the valve needle and penetrates through the valve seat, a flow channel is arranged in the valve seat, a valve port and a first opening are formed in the valve seat, and the valve port and the first opening are respectively communicated with the flow channel; the nut comprises a guide section, the guide section is sleeved outside the valve needle, and one end, close to the valve port, of the guide section extends into the flow channel.
So set up, the part that the direction section stretched into in the runner can play the guard action to the needle, prevents that the needle from receiving the direct impact of medium and rocking to guarantee the stability of needle.
In one embodiment, a first connecting pipe is arranged in the first opening, and the inner diameter of the first connecting pipe is R1The length of the guide section extending into the flow passage along the axial direction of the valve needle is L, 4R1/5＞L＞R1/5。
The arrangement is such that the length of the guide section extending into the flow channel is kept at a suitable value, if the extending part is too long, the medium flow is affected, and if the extending part is too short, the protective effect of the guide section on the valve needle is affected.
In one embodiment, an outer side surface of the guide section and an end surface of the guide section facing one end of the valve port are chamfered to form a slope.
By the arrangement, the medium can smoothly flow, the flow resistance is reduced, and the eddy noise is relieved.
In one embodiment, the angle θ between the ramp and the axis of the valve needle is in the range of 15 ° to 75 °.
So set up, can be with the chamfer setting of direction section in suitable within range.
In one embodiment, the nut has a gap with the valve seat.
So set up, when welding first connecting pipe, the high temperature heat transfer when clearance between nut and the disk seat can completely cut off the welding, and the protection nut avoids receiving high temperature to influence.
In one embodiment, a connecting piece is arranged between the nut and the valve seat, the connecting piece is arranged on the outer side of the nut, and the hardness of the connecting piece is greater than that of the nut.
So set up, the integrality of connecting piece can protect the nut.
In one embodiment, the nut is made of engineering plastics, and the connecting piece is a metal piece.
So set up, the nut can utilize injection moulding machine shaping, guarantees the screw thread quality in the nut.
In one embodiment, the connector has an interference fit with the valve seat, and the hardness of the connector is greater than or equal to the hardness of the valve seat.
So set up, when the connecting piece is impressed in the valve seat, the connecting piece warp little or not warp basically, and the valve seat warp slightly for the connecting piece can not take place relative rotation in the valve seat.
In one embodiment, the electronic expansion valve further comprises a screw, one end of the screw extends into the nut and is in threaded connection with the nut, and the screw is in rotational connection with the valve needle; the electronic expansion valve further comprises a valve sleeve and a stop component, the valve sleeve is arranged on the valve seat, at least part of the nut is arranged in the valve sleeve, the stop component is connected to the inner wall of the valve sleeve, a first stop part is arranged at one end, far away from the valve needle, of the screw rod, and the first stop part is matched with the stop component to limit the axial operation of the screw rod.
In one embodiment, the electronic expansion valve further includes a screw and a bearing, the screw is provided with a spring groove, the screw is rotatably connected with the valve needle through the bearing, the bearing is a rolling bearing, an outer ring of the bearing is fixedly connected with an inner wall of the spring groove, and the valve needle penetrates through an inner ring of the bearing.
The utility model also provides the following technical scheme:
an air conditioning unit comprises the electronic expansion valve.
Compared with the prior art, the electronic expansion valve provided by the utility model has the advantages that one end of the guide section of the nut extends into the flow channel, and when a medium flows into the flow channel, the guide section can protect the valve needle from being directly impacted by the medium.
Drawings
Fig. 1 is a sectional view of an electronic expansion valve provided in the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a cross-sectional view of the nut mated with the connector.
The symbols in the drawings represent the following meanings:
100. an electronic expansion valve; 10. a valve seat; 11. a first opening; 111. a first connecting pipe; 12. a second opening; 121. a second connecting pipe; 13. a flow channel; 14. a valve port; 20. a valve needle; 21. a drainage section; 30. a screw assembly; 31. a nut; 311. a guide section; 312. a bevel; 313. a connecting member; 3131. a main body section; 3132. an embedding section; 32. a screw; 321. a spring slot; 322. a bearing; 323. a first stopper; 33. an elastic member; 40. a valve housing; 50. a stop assembly; 51. connecting columns; 511. a guide portion; 512. a stop block; 52. a second stop.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, an electronic expansion valve 100 according to the present invention is installed in an air conditioning unit, and is used for implementing throttling and pressure reducing of a medium and controlling a medium flow rate in a pipeline of the air conditioning unit.
Specifically, the electronic expansion valve 100 includes a valve seat 10, a valve needle 20 and a screw assembly 30, the valve needle 20 is disposed in the valve seat 10, the screw assembly 30 is connected to the valve needle 20, and the screw assembly 30 can drive the valve needle 20 to move along an axial direction of the valve needle 20.
The valve seat 10 is provided with a first opening 11, a valve port 14 and a second opening 12, the second opening 12 is communicated with the valve port 14, a flow passage 13 is arranged in the valve seat 10, and the flow passage 13 is respectively communicated with the first opening 11 and the valve port 14.
A first connecting pipe 111 is arranged in the first opening 11, a second connecting pipe 121 is arranged in the second opening 12, and the first connecting pipe 111 and the second connecting pipe 121 are convenient for a user to be in butt joint with a pipeline of an air conditioning unit.
One end of the valve needle 20 is provided with a drainage section 21, in the process that the valve needle 20 moves along the axial direction, the drainage section 21 can extend into the valve port 14, the drainage section 21 is conical, and along with the difference of the depth of the drainage section 21 extending into the valve port 14, the cross section of a circulation cavity between the outer wall of the drainage section 21 and the inner wall of the valve port 14 is different, so that the circulation of a medium is controlled.
The screw assembly 30 includes a nut 31 and a screw 32, at least a portion of the nut 31 is disposed through the valve seat 10, the nut 31 is in threaded connection with the screw 32, the nut 31 is connected with the valve seat 10, and one end of the screw 32 is rotatably connected with the valve needle 20.
Preferably, the nut 31 includes a guiding section 311, the guiding section 311 is sleeved outside the valve needle 20, and an end of the guiding section 311 close to the valve port 14 extends into the flow passage 13. In this embodiment, the first opening 11 is an inlet, when the medium enters the flow channel 13 from the first opening 11, the guiding section 311 guides the valve needle 20, and the guiding section 311 extending into the flow channel 13 can protect the valve needle 20 from direct impact of the medium, so as to prevent noise generated by vibration of the valve needle 20 impacting the inner wall of the valve port 14.
Referring to fig. 2, the length of the guiding section 311 extending into the flow channel 13 is L, and the inner diameter of the first connecting pipe 111 is R1The inner diameter of the valve port 14 is R2，4R1/5＞L＞R1/5. With this arrangement, the length of the nut 31 extending into the flow passage 13 can be maintained at an appropriate value, and if the length is too long, the flow rate of the flow passage 13 is affected, and if the length is too short, the protective effect of the nut 31 on the needle 20 is affected. The length L of the guiding section 311 extending into the flow passage 13 can be 3R1/5、2R1And/5, etc.
Specifically, the outer side wall of the guide section 311 and the end surface of the guide section 311 facing one end of the valve port 14 are chamfered to form a slope 312, so that the medium flows smoothly, the flow resistance is reduced, and the vortex noise is relieved.
The angle theta between the ramp 312 and the axis of the valve needle 20 is in the range 15 deg. -75 deg.. It will be appreciated that, with this arrangement, the chamfer of the guide section 311 can be set within a suitable range, and if the chamfer is too large, the protective effect of the guide section 311 on the valve needle 20 is affected, and if the chamfer is too small, the flow guiding effect of the inclined surface 312 on the medium is affected. The angle θ between the ramp 312 and the axis of the valve needle 20 may be 15 °, 20 °, 30 °, 55 °, 60 °, 75 °, etc.
Referring to fig. 3, a connecting member 313 is disposed between the nut 31 and the valve seat 10, the hardness of the connecting member 313 is greater than or equal to the hardness of the nut 31, and the connecting member 313 protects the nut 31.
Specifically, the connecting member 313 is in interference fit with the valve seat 10, and the hardness of the connecting member 313 is greater than or equal to that of the valve seat 10, so as to ensure that the connecting member 313 deforms little or not substantially when the connecting member 313 is pressed into the valve seat 10 with interference, and the valve seat 10 can play a role in stopping rotation of the connecting member 313 and the nut 31.
In one embodiment, the connecting member 313 is annular, and the annular connecting member 313 surrounds the outer side of the nut 31.
In another embodiment, the connecting member 313 is a strip, and the connecting member 313 is a plurality of connecting members 313 surrounding the outer side of the nut 31.
The connector 313 includes a main body section 3131 and an insertion section 3132 connected to each other, the main body section 3131 is disposed outside the nut 31, and the insertion section 3132 extends toward a center line direction of the nut 31 and is inserted into the nut 31. The embedding section 3132 can increase the contact area between the connection member 313 and the nut 31, thereby enhancing the connection strength between the connection member 313 and the nut 31.
The included angle between the main section 3131 and the embedding section 3132 is a right angle, an obtuse angle or an acute angle.
The nut 31 is made of engineering plastics, so that the weight of the nut 31 can be reduced, the nut can be molded by injection molding, and the quality of threads in the nut 31 can be guaranteed in the injection molding process; the connecting piece 313 is made of metal or powder metallurgy, the metal or powder metallurgy is hard, and when the connecting piece 313 is in interference fit with the valve seat 10, the nut 31 can be protected from being damaged, and the integrity of the nut 31 is guaranteed.
Preferably, the nut 31 is made of PPS (polyphenylene sulfide), which has self-lubricating property and can reduce the abrasion between the valve needle 20 and the nut 31 to avoid the seizing. The connecting member 313 may be made of stainless steel or other material with hardness higher than that of engineering plastic.
A gap is formed between the nut 31 and the valve seat 10, so that a heat insulation cavity is formed between the nut 31 and the valve seat 10, the nut 31 is protected, and when the first connecting pipe 111 and other pipelines of the air conditioner are welded, the heat insulation cavity can prevent high temperature generated during welding from influencing the nut 31.
Referring to fig. 1, the screw assembly 30 further includes an elastic member 33, one end of the screw 32 is provided with a spring slot 321, the elastic member 33 is disposed in the spring slot 321, one end of the elastic member 33 abuts against the screw 32, the other end abuts against the valve needle 20, and the screw 32 presses the valve needle 20 through the elastic member 33.
The screw 32 is rotatably connected with the valve needle 20 through a bearing 322, the bearing 322 is a rolling bearing, an outer ring of the bearing 322 is fixedly connected with an inner wall of the spring groove 321, and the valve needle 20 is arranged on an inner ring of the bearing 322 in a penetrating way, so that the valve needle 20 can be prevented from rotating, and the screw 32 only controls the axial movement of the valve needle 20.
The electronic expansion valve 100 further includes a valve housing 40 and a stopper assembly 50, the valve housing 40 is disposed on the valve seat 10, and the stopper assembly 50 is attached to an inner wall of the valve housing 40. The end of the screw 32 away from the valve needle 20 is provided with a first stop member 323, and the first stop member 323 can cooperate with the stop assembly 50 to axially limit the screw 32, so as to prevent the screw 32 from unrestrained pressing the valve needle 20, so that the valve needle 20 can cause great wear to the wall surface of the valve port 14, and at the same time, the screw 32 can be prevented from unrestrained movement toward a direction away from the valve needle 20.
Specifically, the stopper assembly 50 includes a second stopper 52 and a coupling post 51, the coupling post 51 is coupled to an inner wall of the valve housing 40, an outer side surface of the coupling post 51 is provided with a spiral-shaped guide 511, the spiral-shaped guide 511 forms a guide path, and the second stopper 52 is movable on the guide 511.
The two ends of the connecting column 51 are respectively provided with a stop block 512, when the second stop member 52 moves to the upper part of the connecting column 51, the stop block 512 stops the second stop member 52 from further moving, and the second stop member 52 abuts against the first stop member 323 to stop the screw 32 from further rotating, so as to stop the screw 32 from further moving towards the direction away from the valve needle 20. When the second stopper 52 moves to the lower portion of the connecting rod 51, the stopper block 512 located at the lower portion blocks the second stopper 52 from further moving, and the second stopper 52 abuts against the first stopper 323 to block the screw 32 from further rotating, thereby blocking the screw 32 from further moving toward the direction in which the valve approaches the valve needle 20.
The electronic expansion valve 100 further includes a rotor (not shown) connected to the screw 32, and a coil (not shown) disposed outside the valve housing 40, wherein the coil is powered to drive the rotor to rotate, the rotor drives the screw 32 to rotate, and since the nut 31 is limited by the valve seat 10, the nut 31 does not rotate, so that the screw 32 moves along the axial direction of the screw 32, and the valve needle 20 moves along the axial direction of the screw 32.
The utility model also provides an air conditioning unit, which comprises the electronic expansion valve 100.
During operation, the electronic expansion valve 100 controls the depth of the flow guiding section 21 of the valve needle 20 extending into the valve port 14 according to the actual condition of the air conditioning unit, so as to control the flow rate. The medium enters the flow channel 13 from the first connecting pipe 111, and the guide section 311 in the flow channel 13 can protect the valve needle 20 from direct impact of the medium, so that the stability of the valve needle 20 is ensured.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (11)

1. An electronic expansion valve comprises a valve seat (10), a valve needle (20) and a nut (31), wherein at least part of the nut (31) is sleeved outside the valve needle (20), the nut (31) penetrates through the valve seat (10), a flow channel (13) is arranged in the valve seat (10), a valve port (14) and a first opening (11) are formed in the valve seat (10), and the valve port (14) and the first opening (11) are respectively communicated with the flow channel (13);
the valve is characterized in that the nut (31) comprises a guide section (311), the guide section (311) is sleeved outside the valve needle (20), and one end, close to the valve port (14), of the guide section (311) extends into the flow channel (13).
2. An electronic expansion valve according to claim 1, wherein a first connection pipe (111) is arranged in the first opening (11), the first connection pipe (111) having an inner diameter R1The guide section (311) extends into the flow passage (13) along the axial direction of the valve needle (20) for a length L, 4R1/5＞L＞R1/5。
3. An electronic expansion valve according to claim 1, wherein an outer side surface of the guide section (311) and an end surface of the guide section (311) facing an end of the valve port (14) are chamfered to form a slope (312).
4. An electronic expansion valve according to claim 3, wherein the angle θ between the ramp (312) and the axis of the valve needle (20) is in the range of 15 ° -75 °.
5. An electronic expansion valve according to claim 1, wherein there is a gap between the nut (31) and the valve seat (10).
6. An electronic expansion valve according to claim 1, wherein a connection member (313) is arranged between the nut (31) and the valve seat (10), the connection member (313) being arranged outside the nut (31), and the hardness of the connection member (313) being greater than the hardness of the nut (31).
7. An electronic expansion valve according to claim 6, wherein the nut (31) is made of engineering plastic, and the connecting member (313) is a metal member.
8. An electronic expansion valve according to claim 6, wherein the connection member (313) is an interference fit with the valve seat (10) and the hardness of the connection member (313) is greater than or equal to the hardness of the valve seat (10).
9. An electronic expansion valve according to claim 1, further comprising a screw (32), wherein one end of the screw (32) extends into the nut (31) and is in threaded connection with the nut (31), and the screw (32) is rotatably connected with the valve needle (20); the electronic expansion valve further comprises a valve sleeve (40) and a stopping component (50), wherein the valve sleeve (40) is arranged on the valve seat (10), at least part of the nut (31) is arranged in the valve sleeve (40), the stopping component (50) is connected to the inner wall of the valve sleeve (40), one end, far away from the valve needle (20), of the screw rod (32) is provided with a first stopping part (323), and the first stopping part (323) is matched with the stopping component (50) to limit the axial operation of the screw rod (32).
10. The electronic expansion valve according to claim 1, further comprising a screw (32) and a bearing (322), wherein the screw (32) is provided with a spring groove (321), the screw (32) is rotatably connected with the valve needle (20) through the bearing (322), the bearing (322) is a rolling bearing, an outer ring of the bearing (322) is fixedly connected with an inner wall of the spring groove (321), and the valve needle (20) is inserted into an inner ring of the bearing (322).
11. An air conditioning assembly comprising an electronic expansion valve according to any of claims 1 to 10.
CN202122088665.0U 2021-08-31 2021-08-31 Electronic expansion valve and air conditioning unit thereof Active CN215983358U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202122088665.0U CN215983358U (en) 2021-08-31 2021-08-31 Electronic expansion valve and air conditioning unit thereof
KR1020220062772A KR20230032854A (en) 2021-08-31 2022-05-23 Electronic expansion valve and air conditioner unit thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122088665.0U CN215983358U (en) 2021-08-31 2021-08-31 Electronic expansion valve and air conditioning unit thereof

Publications (1)

Publication Number Publication Date
CN215983358U true CN215983358U (en) 2022-03-08

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Application Number Title Priority Date Filing Date
CN202122088665.0U Active CN215983358U (en) 2021-08-31 2021-08-31 Electronic expansion valve and air conditioning unit thereof

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KR (1) KR20230032854A (en)
CN (1) CN215983358U (en)

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