[go: up one dir, main page]

WO2022127264A1 - 电子膨胀阀以及制冷设备 - Google Patents

电子膨胀阀以及制冷设备 Download PDF

Info

Publication number
WO2022127264A1
WO2022127264A1 PCT/CN2021/120607 CN2021120607W WO2022127264A1 WO 2022127264 A1 WO2022127264 A1 WO 2022127264A1 CN 2021120607 W CN2021120607 W CN 2021120607W WO 2022127264 A1 WO2022127264 A1 WO 2022127264A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
electronic expansion
nut
expansion valve
seat
Prior art date
Application number
PCT/CN2021/120607
Other languages
English (en)
French (fr)
Inventor
黄龙华
陈超
杨茂
江波
Original Assignee
广东威灵电机制造有限公司
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 广东威灵电机制造有限公司 filed Critical 广东威灵电机制造有限公司
Priority to JP2023532421A priority Critical patent/JP2023551273A/ja
Priority to EP21905195.0A priority patent/EP4242498A4/en
Publication of WO2022127264A1 publication Critical patent/WO2022127264A1/zh
Priority to US18/205,210 priority patent/US20230304587A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F25B41/35—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
    • 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
    • F16K1/02—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 with screw-spindle
    • 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
    • F16K1/42—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
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F16K31/504—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating means being rotable, rising, and having internal threads which co-operate with threads on the outside of the valve body
    • 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
    • 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
    • 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

Definitions

  • the present application relates to the technical field of fluid control, and in particular, to an electronic expansion valve and refrigeration equipment.
  • an electronic expansion valve usually includes a valve seat assembly, a nut assembly and a valve needle assembly.
  • the valve seat assembly is provided with a valve port, and the valve needle assembly moves relative to the nut assembly to drive the valve needle to open or close the valve port, thereby realizing adjustment. flow function.
  • the electronic expansion valve is likely to be stuck, which affects the working performance of the electronic expansion valve.
  • the main purpose of this application is to propose an electronic expansion valve, which aims to solve the phenomenon that the electronic expansion valve is easily stuck in the prior art.
  • the electronic expansion valve proposed in the present application includes a valve seat, a nut and a connecting piece; the valve seat has a valve cavity; one end of the nut is arranged in the valve cavity, and the outer wall of the nut protrudes There is a ring-shaped positioning part, the positioning part is in contact with the cavity wall of the valve cavity for positioning; one end of the connecting piece is fixedly connected with the nut, and the other end extends away from the nut and is connected to the valve.
  • the axial end face of the seat is fixedly connected.
  • the positioning portion includes a cylindrical connecting section, and the connecting section is in interference fit with the inner wall of the valve seat.
  • the positioning portion further includes a guide segment connected to the connection segment, the guide segment is provided on a side of the connection segment away from the connection piece; the outer diameter of the guide segment is smaller than the outer diameter of the connecting segment.
  • the outer diameter of the guide segment gradually decreases from the end connected to the connection segment toward the end away from the connection segment.
  • a balance channel is provided between the positioning portion and the valve seat, and the balance channel is used to communicate with both sides of the positioning portion in the axial direction.
  • the connecting piece is provided with a balance hole
  • the balance hole is used to communicate with both sides of the connecting piece in the axial direction
  • the balance hole communicates with the balance channel
  • the connecting piece and the positioning portion are arranged at intervals, the connecting piece, the positioning portion and the valve seat are enclosed to form a first cavity, and the balance channel and the balance The holes are all communicated with the first cavity.
  • the balance channel is provided in the positioning portion.
  • the balance channel is provided on the valve seat.
  • the connecting piece and the valve seat are welded and fixed.
  • the electronic expansion valve further includes a valve stem, a valve needle portion connected to the valve stem, and a valve core seat disposed on the valve seat;
  • the nut includes a threaded section and a fixed section; The threaded section is matched with the valve stem; the fixed section is connected with the threaded section and is extended toward the valve core seat, and the valve needle portion is guided and matched with the fixed section; the connection Both the sheet and the positioning portion are arranged on the outer wall of the fixing section.
  • the fixed segment includes:
  • the installation part is connected with the threaded section, the connecting piece and the positioning part are both provided on the outer wall of the installation part;
  • extension part one end of the extension part is connected with the mounting part, and the other end is axially extended toward the valve core seat.
  • the outer wall of the extension portion and the positioning portion are arranged in a stepped shape, and the outer diameter of the extension portion is smaller than the outer diameter of the positioning portion.
  • the extension portion and the valve core seat are provided with a gap.
  • the extending portion is provided with a conducting hole.
  • the number of the conducting flow holes is set to be multiple, and the plurality of the conducting flow holes are arranged at intervals around the periphery of the extending portion.
  • the extension portion, the mounting portion, and the positioning portion are integral structures.
  • the present application also provides a refrigeration equipment, including the above-mentioned electronic expansion valve;
  • the electronic expansion valve includes a valve seat, a nut and a connecting piece;
  • the valve seat has a valve cavity; one end of the nut is provided at the In the valve cavity, an annular positioning portion is protruded from the outer wall of the nut, and the positioning portion is positioned in abutment with the cavity wall of the valve cavity; one end of the connecting piece is fixedly connected to the nut, The other end extends away from the nut and is fixedly connected to the axial end face of the valve seat.
  • the nut assembly includes a nut and a connecting piece fixedly connected with the nut.
  • the positioning part is positioned in contact with the cavity wall of the valve cavity to realize the radial positioning of the nut and the valve seat; one end of the connecting piece is fixedly connected with the nut, and the other end extends away from the nut and is axially connected to the valve seat.
  • the end face is fixedly connected to realize the axial positioning of the nut and the valve seat, so as to realize the function of both the axial and radial positioning of the nut and the valve seat, to ensure the positioning and cooperation of the nut and the valve seat, and to ensure the same positioning of the nut and the valve seat.
  • the axial degree prevents the electronic expansion valve from being stuck and improves the working performance of the electronic expansion valve.
  • FIG. 1 is a schematic structural diagram of an embodiment of an electronic expansion valve of the present application.
  • FIG 2 is another schematic structural diagram of an embodiment of the electronic expansion valve of the present application.
  • FIG. 3 is a schematic structural diagram of an embodiment of a nut assembly in an electronic expansion valve of the present application
  • FIG. 4 is a schematic structural diagram of the cooperation between the positioning portion and the valve seat in the embodiment of the application;
  • FIG. 5 is another structural schematic diagram of the cooperation between the positioning portion and the valve seat in the embodiment of the present application.
  • the present application proposes an electronic expansion valve.
  • the electronic expansion valve includes a valve seat assembly 100 , a nut assembly 200 , a valve needle assembly 300 , and a housing 400 .
  • the valve seat assembly 100 includes a valve seat 110 and a valve core seat 120.
  • the valve core seat 120 has a valve port 121;
  • the valve needle assembly 300 and the accommodating cavity of the rotor assembly 500 realize the integrity and tightness of the overall structure of the electronic expansion valve.
  • the nut assembly 200 is fixedly connected with the valve seat 110 , and the valve needle assembly 300 is movably disposed in the nut assembly 200 to be able to move up and down along the axial direction of the nut assembly 200 to be close to the valve port 121 of the valve core seat 120 or away from the valve
  • the valve port 121 of the core seat 120 moves, thereby realizing the function of blocking or opening the valve port 121.
  • the adjustment electronic The opening of the expansion valve in turn regulates the function of fluid flow.
  • the nut assembly 200 includes a nut 210 and a connecting piece 220.
  • One end of the nut 210 is disposed in the valve cavity 101 of the valve seat 110.
  • the outer wall of the nut 210 is protruded with a circular positioning portion 211, which is connected to the valve cavity 101.
  • One end of the connecting piece 220 is fixedly connected with the nut 210 , and the other end extends away from the nut 21 and is fixedly connected with the axial end face of the valve seat 110 .
  • the nut 210 plays the role of installing the guide valve needle assembly 300 , so that the valve needle assembly 300 can move axially in the nut 210 to smoothly block the valve port 121 or open the valve port 122 .
  • the connecting piece 220 plays the role of the fixed connection between the nut 210 and the valve seat 110, so as to ensure the stability of the structure.
  • the outer wall of the nut 210 is protruded to set the positioning portion 211, and the positioning portion 211 is positioned against the inner wall of the valve seat 110 to realize the positioning of the nut 210 and the valve seat 110 in the radial direction; at the same time, through the connecting piece 220 and the valve seat
  • the axial end face of 110 is fixedly connected to realize the positioning of the nut 210 and the valve seat 110 in the axial direction, thereby ensuring the function of positioning both the radial and axial directions between the nut 210 and the valve seat 110, that is, ensuring the nut 210 and the valve seat 110.
  • the coaxiality between the nut 210 and the valve seat 110 further ensures the coaxiality between the nut 210 and the valve core seat 120 on the valve seat 110, so that the valve needle assembly 300 can move into or away from the valve port 121 more smoothly, preventing the The phenomenon that the electronic expansion valve is stuck is avoided, and the working performance of the electronic expansion valve is improved.
  • the shape and structure of the positioning portion 211 can be determined according to the actual situation, for example, it can be set as a ring structure.
  • the radial positioning of the nut 210 and the valve seat 110 can be ensured by the outer wall of the positioning portion 211 abutting against the inner wall of the valve seat 110 .
  • the positioning portion 211 may be a ring convex structure, or may be a cylindrical structure with a certain axial length.
  • the positioning part 211 adopts a cylindrical structure with a certain axial length, and the outer cylindrical surface of the positioning part 211 abuts against the inner cylindrical surface of the valve seat 110, which further increases the contact area between the two and improves the circumferential positioning effect. .
  • the setting position of the positioning portion 211 can also be determined according to the actual situation. For example, it can be set at a position where the nut 210 is close to the valve core seat 120, or at a position where the nut 210 is close to the end face of the valve seat 110. Or it can be arranged at a position corresponding to the middle of the valve seat 110 , as long as the positioning portion 211 can enter the valve cavity 101 of the valve seat 110 during the installation process, and can be positioned against the inner wall of the valve seat 110 . It can be understood that if the connecting piece 220 is connected between the nut 210 and the valve seat 110 , the outer diameter of the connecting piece 220 will be larger than the inner diameter of the valve seat 110 .
  • the positioning portion 211 can be provided on the connecting piece 220 toward the side of the valve cavity 101 .
  • the connecting piece 220 and the nut 210 are fixedly connected first, and then the side of the nut 210 with the positioning portion 211 is inserted into the valve cavity 101 of the valve seat 110.
  • the positioning portion 211 and the valve seat 110 are connected
  • the inner wall is abutted to ensure circumferential positioning, and the end face of the valve seat 110 is limited by the connecting piece 220 to realize the positioning of the nut 210 in the axial direction of the valve seat 110, and then the connecting piece 220 and the valve seat 110 are fixedly connected to Stable cooperation between the nut 210 and the valve seat 110 is achieved, which simplifies the installation difficulty and at the same time ensures the coaxiality of the nut 210 and the valve seat 110 .
  • the connecting piece 220 and the valve seat 110 are welded and fixed to ensure the stability of the structure and prevent the electronic expansion valve from being disengaged due to high internal pressure.
  • the connection piece 220 and the nut 210 may be formed into an integral structure by using a hot-melt process.
  • the connecting piece 220 is made of metal material, and the nut 210 is made of non-metallic material.
  • the nut assembly 200 includes a nut 210 and a connecting piece 220 fixedly connected with the nut 210.
  • One end of the nut 210 is set in the valve cavity 101 of the valve seat 110, and the nut
  • the outer wall of the 210 is protruded with a positioning portion 211, the positioning portion 211 is abutted and positioned with the cavity wall of the valve cavity 101 to realize the radial positioning of the nut 210 and the valve seat 110;
  • one end of the connecting piece 220 is fixedly connected with the nut 210, and the other One end extends away from the nut 210 and is fixedly connected with the axial end face of the valve seat 110 to realize the axial positioning of the nut 210 and the valve seat 110, thereby realizing the function of both the nut 210 and the valve seat 110 being positioned axially and radially, ensuring the The coaxiality between the nut 210 and the valve seat 110 further ensure
  • the positioning portion 211 includes a cylindrical connecting section 211a, the connecting section 211a is connected to the The inner wall of the valve seat 110 is interference fit.
  • the connecting section 211a plays the role of positioning and installation, and the connecting section 211a is in interference fit with the inner wall of the valve seat 110 to realize the function of fixed connection between the connecting section 211a and the valve seat 110, and ensure the fixed part 211 and the valve seat 110. Therefore, the effect of radial positioning of the nut 210 and the valve seat 110 is ensured.
  • the connecting section 211a can be selected as a cylindrical structure, and the outer wall of the connecting section 211a is a cylindrical surface, so as to increase the positioning area with the valve seat 110 and further ensure the positioning effect.
  • the positioning portion 211 further includes a guide segment 211b connected to the connection segment 211a, and the guide segment 211b is disposed on a portion of the connection segment 211a close to the valve core seat 120 . side; the outer diameter of the guide section 211b is smaller than the outer diameter of the connecting section 211a.
  • the side of the nut 210 with the positioning portion 211 is inserted into the valve seat 110, and the outer diameter of the connecting section 211a of the positioning portion 211 is in an interference fit relationship with the inner diameter of the valve seat 110.
  • a guide segment 211b is provided on the side of the segment 211a close to the valve core seat 120.
  • the outer diameter of the guide segment 211b is smaller than the outer diameter of the connecting segment 211a, so the outer diameter of the guide segment 211b is smaller than the inner diameter of the valve seat 110, so that the guide segment 211b is smaller than the inner diameter of the valve seat 110. It plays a guiding role for the installation of the nut 210 , so that the positioning portion 211 can enter the valve cavity 101 of the valve seat 110 more quickly.
  • the shape and structure of the guide section 211b may be determined according to the actual situation, for example, it may be a cylindrical structure, a conical structure, or an inclined surface structure and so on.
  • the guiding section 211b adopts an annular structure, and the outer wall of the guiding section 211b is provided with a conical surface, The outer diameter of the guide segment 211b gradually decreases from the end connected to the connection segment 211a toward the end away from the connection segment 211a.
  • the size of the outer diameter of the positioning portion 211 in the axial direction away from the valve core seat 120 gradually increases and then maintains a stable trend.
  • the guide section The connection between 211b and the connection end 211a can be rounded to improve the smoothness of the connection between the guide section 211b and the connection end 211a, so that the connection section 211a is easier to slide into the valve seat 110 under the guidance of the guide section 211b In the valve cavity 101 , the installation efficiency of the positioning portion 211 and the valve seat 110 is accelerated.
  • a balance channel 103 is provided between the positioning portion 211 and the valve seat 110 , and the balance channel 103 It is used to communicate with both sides of the positioning portion 211 in the axial direction.
  • the outer wall of the positioning portion 211 is in an interference fit with the cavity wall of the valve cavity 101 , and the positioning cooperation between the positioning portion 211 and the valve seat 110 will cause the two sides of the positioning portion 211 in the axial direction to have an interference fit. It is divided into two regions, and the balance channel 103 is provided between the positioning portion 211 and the valve seat 110, so that the regions on both sides of the positioning portion 211 in the axial direction are communicated, that is, the upper region of the positioning portion 211 and the lower valve are connected. cavity 101, thereby ensuring the pressure balance on both sides of the positioning portion 211 in the axial direction, preventing uneven pressure from affecting the performance of the electronic expansion valve.
  • the shape and structure of the balance channel 103 can be determined according to the actual situation, for example, it can be a cylindrical through hole, a conical through hole, an oblique hole, a curved through hole and other special-shaped through holes; of course, it can also be Structures such as grooves or notches.
  • the number of the balance channels 103 can also be determined according to the actual situation. For example, a plurality of balance channels 103 can be arranged to be distributed on the periphery of the positioning portion 211 or the inner wall of the valve seat 110 at intervals, so that the fluid passes through the balance channels 103 more evenly.
  • the setting position of the balance channel 103 can be determined according to the actual situation, for example, the balance channel 103 can be set on the positioning part 211 ; The inner wall of the valve seat 110 .
  • the balancing channel 103 may be a through hole structure on the positioning portion 211 , or a notch structure or a groove structure formed by concave in the outer wall of the positioning portion 211 .
  • the balance channel 103 is provided on the inner wall of the valve seat 110 , it may be a notch or a groove structure or the like recessed inward on the inner wall of the valve seat 110 .
  • the connecting piece 220 is provided with a balance hole 221 , and the balance hole 221 is used to communicate with both sides of the connecting piece 220 in the axial direction.
  • the balance channel 103 communicates.
  • one end of the connecting piece 220 is fixed to the nut 210 and the other end extends to the valve seat 110, so the cavities on both sides of the connecting piece 220 are separated by the connecting piece 220.
  • a balance hole 221 is formed on the connecting piece 220 to communicate the balance channel 103 and the inner cavity of the housing 400 , thereby connecting the valve cavity 101 with the inner cavity of the housing 400 , thereby ensuring the pressure between the valve cavity 101 and the inner cavity of the housing 400 Balance ensures the pressure balance in the entire electronic expansion valve and enhances the stability of the electronic expansion valve.
  • the shape and structure of the balance hole 221 may be determined according to the actual situation, such as a circular through hole, a square through hole, or other special-shaped through holes.
  • a plurality of balancing holes 221 may be provided, and the plurality of balancing holes 221 are evenly spaced around the periphery of the connecting piece 220 to achieve a better effect of balancing the pressure.
  • the connecting piece 220 and the positioning portion 211 are spaced apart, and the connecting piece 220 , the positioning portion 211 and the valve seat 110 are enclosed to form a first cavity
  • the body 102 , the balance channel 103 and the balance hole 221 are all communicated with the first cavity 102 .
  • the positioning portion 211 and the connecting piece 220 may be arranged in a fit or spaced manner.
  • the two methods have little effect on the positioning and cooperation between the nut 210 and the valve seat 110, but in the installation process
  • the positioning portion 211 is a structure protruding from the outer wall of the nut 210
  • the positioning portion 211 and the nut 210 can be an integral structure
  • the connecting piece 220 is made of metal material, which needs to be fixed with the nut 210 by other methods such as hot melting or injection molding.
  • the connecting piece 220 and the positioning portion 211 are spaced apart, and have a larger operating space than the bonding arrangement, which further simplifies the difficulty of the process.
  • the connecting piece 220 , the positioning portion 211 and the valve seat 110 are enclosed to form the first cavity 102 , and the balance passage 103 and the balance hole 221 are both communicated with the first cavity 102 to realize
  • the cavity in the housing 400, the first cavity 102 and the valve cavity 101 are all connected, so as to achieve the effect of balancing the internal cavity pressure of the entire electronic expansion valve, preventing uneven pressure from affecting the performance of the electronic expansion valve.
  • the valve needle assembly 300 includes a valve stem 310 and a valve needle portion 320 , and the valve needle portion 320 is provided on the valve stem 310 and the valve core seat 120;
  • the nut 210 includes a threaded section 212 and a fixed section 213;
  • the threaded section 212 is matched with the valve stem 310;
  • the fixed section 213 is connected with the threaded section 212 and faces the valve core seat
  • the valve needle portion 320 is arranged to extend in the direction of 120 , and the valve needle portion 320 guides and cooperates with the fixing section 213 ;
  • the threaded section 212 and the fixed section 213 are two sections that face back in the axial direction.
  • the valve stem 310 is passed through the threaded section 212 and is threadedly matched with the thread 212a of the threaded section 212, so that the valve stem 310 is relative to the threaded section 212.
  • the thread 212a rotates, it can be converted into the movement of the valve stem 310 in the axial direction, thereby driving the valve needle part 320 to move axially. sex.
  • the connecting piece 220 and the positioning portion 211 are both arranged on the outer wall of the fixed section 213.
  • the positioning and cooperation between the positioning section 211 and the connecting piece 220 and the valve seat 110 ensure the coaxiality of the fixed section 213 and the valve seat 110, while the fixed section
  • the inner wall of 213 guides and cooperates with the valve needle portion 320, so that the valve needle portion 320 can enter the valve port 121 of the valve core seat 120 more smoothly, which improves the use performance of the electronic expansion valve.
  • the fixing section 213 includes a mounting portion 213a and an extending portion 213b; the mounting portion 213a is connected to the threaded section 212, and the connecting piece 220 and the positioning portion 211 are both provided on the mounting portion 213a.
  • the mounting portion 213a plays the role of mounting and positioning, and both the connecting piece 220 and the positioning portion 211 are disposed on the mounting portion 213a to ensure the coaxiality of the mounting portion 213a and the valve seat 110; the extension portion 213b is connected to the mounting portion 213a and faces toward The valve core seat 120 extends axially to ensure the guide length with the valve needle portion 320 , thereby ensuring the coaxiality of the valve needle portion 320 and the valve core seat 120 .
  • the extending portion 213b, the mounting portion 213a and the positioning portion 211 are integrally formed.
  • the extension portion 213b extending toward the valve core seat 120 is provided on the nut 210, and the nut 210 realizes the positioning function with the valve seat 110 through the connecting piece 220 and the positioning portion 211.
  • the outer wall of the extending portion 213 b and the positioning portion 211 are disposed in a stepped shape, and the outer diameter of the extending portion 213 b is smaller than the outer diameter of the positioning portion 211 .
  • the extension part 213b mainly plays a guiding role for the inner valve needle part 320
  • the positioning part 211 plays a role of abutting and positioning with the inner wall of the outer valve seat 110, so that the outer diameter of the extension part 213b can be adjusted. Being smaller than the outer diameter of the positioning portion 211 , the material is saved, and the positioning function with the valve seat 110 and the guiding function for the valve needle portion 320 are ensured.
  • the extension portion 213b is provided with a gap between the valve core seat 120 . It can be understood that the nut 210 is positioned with the valve seat 110 through the connecting piece 220 and the positioning portion 211 to ensure the coaxiality of the nut 210 and the valve core seat 120, and at the same time, the extension portion 213b is guided and matched with the valve needle portion 320, so that the The valve needle portion 320 can be coaxial with the valve core seat 120, so that the extension portion 213b and the valve core seat 120 may not be in contact. noise.
  • the extending portion 213b is provided with a conducting hole 201 .
  • the conducting hole 201 may be a closed through hole or a gap.
  • the number of the conducting holes 201 is set to be multiple, and the plurality of conducting holes 201 are arranged at intervals around the periphery of the extending portion 213b.
  • a plurality of diversion holes 201 are provided to increase the channels for the fluid to enter the interior of the extension part 213b.
  • the plurality of diversion holes 201 are arranged around the periphery of the extension part 213b, so that the fluid can enter uniformly from the periphery of the extension part 213b, so as to make the structure more stable .
  • the valve needle portion 320 includes a valve needle sleeve 321 and a valve needle 322 ; the valve needle sleeve 321 is connected to the valve stem 310 , and the valve needle sleeve 321 is guided and matched with the inner wall of the fixed section 213; the valve needle 322 is connected to the side of the valve needle sleeve 321 away from the valve stem 310; the valve stem 310 can drive the valve needle 322 along the The axial direction of the nut 210 moves close to or away from the valve core seat 120 to block or open the valve port 121 .
  • the electronic expansion valve further includes a rotor assembly 500 , the rotor assembly 500 is arranged in the housing 400 and is connected to the valve needle assembly 300 , The rotor assembly 500 drives the valve needle assembly 300 to rotate, so that the valve needle assembly 300 moves axially in the nut 210 .
  • valve stem 310 is fixedly connected to the rotor assembly 500, and the other end is inserted into the valve needle sleeve 321 to connect with the valve needle 322. It is threaded with the threaded section 212 , so that when the nut 210 is fixedly connected to the valve seat 110 , the valve stem 310 will move along the axial direction of the nut 210 while rotating, thereby driving the valve needle sleeve 321 along the inner wall of the fixed section 213 Axial movement, so that the valve needle 322 moves close to or away from the valve core seat 120 along the axial direction of the nut 210 to achieve the purpose of blocking or opening the valve port 121 .
  • one end of the valve needle 322 is installed on the valve needle sleeve 321 , and the other end is inserted into the valve port 121 of the valve core seat 120 . Matching, so that the axial movement of the valve needle 322 is more stable.
  • the present application also proposes a refrigeration device, which includes an electronic expansion valve.
  • the specific structure of the electronic expansion valve refers to the above-mentioned embodiments. Since the refrigeration device adopts all the technical solutions of all the above-mentioned embodiments, it has at least the above-mentioned embodiments. All the beneficial effects brought by the technical solution will not be repeated here.
  • the electrical equipment may be an air conditioner or a refrigerator.

Landscapes

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

Abstract

一种电子膨胀阀以及制冷设备，电子膨胀阀包括阀座（110）、螺母（210）以及连接片（220）；阀座（110）具有阀腔（101），螺母（210）的一端安装于阀腔（101），螺母（210）的外壁凸设有呈圆环状的定位部（211），定位部（211）与阀座（110）的腔壁抵接定位；连接片（220）的一端与螺母（210）固定连接，另一端背离螺母（210）延伸并与阀座（110）的轴向端面固定连接。

Description

电子膨胀阀以及制冷设备
本申请要求于2020年12月14日申请的、申请号为202011483239.0的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及流体控制技术领域，特别涉及一种电子膨胀阀以及制冷设备。
 背景技术
在空调、冰箱、热泵热水器及各类制冷、制热设备中，通常采用电子膨胀阀调节流体的流量。
相关技术中，电子膨胀阀通常包括阀座组件、螺母组件以及阀针组件，阀座组件设有阀口，阀针组件相对于螺母组件运动，以带动阀针打开或关闭阀口，从而实现调节流量的功能。现有技术中，电子膨胀阀内的各部件在配合时，容易发生电子膨胀阀卡死的现象，影响电子膨胀阀的工作性能。
 技术问题
本申请的主要目的是提出一种电子膨胀阀，旨在解决现有技术中电子膨胀阀容易卡死的现象。
 技术解决方案
为实现上述目的，本申请提出的电子膨胀阀，包括阀座、螺母以及连接片；所述阀座具有阀腔；所述螺母的一端设于所述阀腔内，所述螺母的外壁凸设有呈圆环状的定位部，所述定位部与所述阀腔的腔壁抵接定位；所述连接片的一端与所述螺母固定连接，另一端背离所述螺母延伸并与所述阀座的轴向端面固定连接。
在本申请一实施例中，所述定位部包括呈圆柱状的连接段，所述连接段与所述阀座的内壁过盈配合。
在本申请一实施例中，所述定位部还包括与所述连接段连接的导向段，所述导向段设于所述连接段远离所述连接片的一侧；所述导向段的外径小于所述连接段的外径。
在本申请一实施例中，所述导向段的外径自与所述连接段连接的一端朝向背离所述连接段的一端逐渐减小。
在本申请一实施例中，所述定位部与所述阀座之间设有平衡通道，所述平衡通道用于连通所述定位部在轴向方向上的两侧。
在本申请一实施例中，所述连接片设有平衡孔，所述平衡孔用于连通所述连接片在轴向方向上的两侧，所述平衡孔与所述平衡通道连通。
在本申请一实施例中，所述连接片与所述定位部间隔设置，所述连接片、所述定位部以及所述阀座围合形成第一腔体，所述平衡通道与所述平衡孔均与所述第一腔体连通。
在本申请一实施例中，所述平衡通道设于所述定位部。
在本申请一实施例中，所述平衡通道设于所述阀座。
在本申请一实施例中，所述连接片与所述阀座焊接固定。
在本申请一实施例中，所述电子膨胀阀还包括阀杆、与所述阀杆连接的阀针部以及设于所述阀座的阀芯座；所述螺母包括螺纹段和固定段；所述螺纹段与所述阀杆配合；所述固定段与所述螺纹段连接，并朝向所述阀芯座的方向延伸设置，所述阀针部与所述固定段导向配合；所述连接片与所述定位部均设于所述固定段的外壁。
在本申请一实施例中，所述固定段包括：
安装部，所述安装部与所述螺纹段连接，所述连接片和所述定位部均设于所述安装部的外壁；和
延伸部，所述延伸部的一端与所述安装部连接，另一端朝向所述阀芯座轴向延伸设置。
在本申请一实施例中，所述延伸部的外壁与所述定位部呈台阶状设置，所述延伸部的外径小于所述定位部的外径。
在本申请一实施例中，所述延伸部与所述阀芯座间隙设置。
在本申请一实施例中，所述延伸部设有导流通孔。
在本申请一实施例中，所述导流通孔的数量设置为多个，多个所述导流通孔围绕所述延伸部的周缘间隔设置。
在本申请一实施例中，所述延伸部、所述安装部以及所述定位部为一体结构。
为实现上述目的，本申请还提供一种制冷设备，包括上述的电子膨胀阀；该电子膨胀阀包括阀座、螺母以及连接片；所述阀座具有阀腔；所述螺母的一端设于所述阀腔内，所述螺母的外壁凸设有呈圆环状的定位部，所述定位部与所述阀腔的腔壁抵接定位；所述连接片的一端与所述螺母固定连接，另一端背离所述螺母延伸并与所述阀座的轴向端面固定连接。
 有益效果
本申请技术方案电子膨胀阀中，通过对螺母组件的改进，螺母组件包括螺母和与螺母固定连接的连接片，螺母的一端设于阀座的阀腔内，螺母的外壁凸设有呈圆环状的定位部，该定位部与阀腔的腔壁抵接定位，以实现螺母与阀座的径向定位；连接片的一端与螺母固定连接，另一端背离螺母延伸并与阀座的轴向端面固定连接，以实现螺母与阀座的轴向定位，从而实现了螺母与阀座轴向径向均定位的功能，保证了螺母与阀座定位配合，进而保证了螺母与阀芯座的同轴度，防止了电子膨胀阀卡死的现象，提高了电子膨胀阀的工作性能。
 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请电子膨胀阀实施例的一结构示意图；
图2为本申请电子膨胀阀实施例的另一结构示意图；
图3为本申请电子膨胀阀中螺母组件实施例的结构示意图；
图4为本申请实施例中定位部与阀座之间配合的一结构示意图；
图5为本申请实施例中定位部与阀座之间配合的另一结构示意图。
附图标号说明：
标号 名称 标号 名称
100 阀座组件 213 固定段
110 阀座 213a 安装部
101 阀腔 213b 延伸部
102 第一腔体 201 导流通道
103 平衡通道 220 连接片
120 阀芯座 221 平衡孔
121 阀口 300 阀针组件
200 螺母组件 310 阀杆
210 螺母 320 阀针部
211 定位部 321 阀针套
211a 连接段 322 阀针
211b 导向段 400 壳体
212 螺纹段 500 转子组件
212a 螺纹    
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，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作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，若本申请实施例中有涉及方向性指示（诸如上、下、左、右、前、后……），则该方向性指示仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本申请实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
本申请提出一种电子膨胀阀。
在本申请实施例中，如图1至图5所示，该电子膨胀阀包括阀座组件100、螺母组件200、阀针组件300、壳体400。
阀座组件100包括阀座110和阀芯座120，阀芯座120具有阀口121；壳体400设置在阀座110上，并与阀座110对接以围合形成用于容纳螺母组件200、阀针组件300以及转子组件500的容纳腔，实现电子膨胀阀整体结构的完整性和密封性。螺母组件200与阀座110固定连接，阀针组件300可移动地设于螺母组件200内，以能够沿着螺母组件200的轴向上下运动，以靠近阀芯座120的阀口121或者远离阀芯座120的阀口121运动，进而实现封堵或者打开阀口121的功能，同时可以根据调节阀针组件300距离阀芯座120的距离或者伸入到阀口121的程度，来实现调节电子膨胀阀的开度进而调节流体流量的功能。
螺母组件200包括螺母210和连接片220，螺母210的一端设于阀座110的阀腔101内，螺母210的外壁凸设有呈圆环状的定位部211，该定位部211与阀腔101的腔壁抵接定位；连接片220的一端与螺母210固定连接，另一端背离螺母21延伸并与阀座110的轴向端面固定连接。
可以理解的，螺母210起到安装导向阀针组件300的作用，以使得阀针组件300能够在螺母210内轴向运动，以顺利封堵阀口121或者打开阀口122。连接片220起到螺母210与阀座110固定连接的作用，以保证结构的稳定性。螺母210的外壁凸设定位部211，该定位部211与阀座110的内壁抵持定位，实现了螺母210与阀座110在径向方向上的定位；同时，通过连接片220与阀座110的轴向端面固定连接，实现了螺母210与阀座110在轴向方向上的定位，从而保证了螺母210与阀座110之间径向和轴向方向均定位的功能，即保证了螺母210与阀座110之间的同轴度，进而保证了螺母210与阀座110上阀芯座120的同轴度，从而使得阀针组件300能够更加顺畅地进入或远离阀口121运动，防止了电子膨胀阀卡死的现象，提高了电子膨胀阀的工作性能。
在实际应用过程中，定位部211的形状结构可根据实际情况而定，如可以设置为圆环结构，当定位部211为圆环结构时，定位部211围绕螺母210的外周形成与螺母210的同心环结构，此时可通过定位部211的外壁与阀座110的内壁抵持保证螺母210与阀座110的径向定位。需要说明的是，当定位部211为圆环结构时，定位部211可以是圆环凸条结构，也可以是具有一定轴向长度的圆柱结构，本实施例中，考虑到定位效果以及加工便利性，定位部211选用具有一定轴向长度的圆柱结构，通过定位部211的外圆柱面与阀座110的内圆柱面相抵持，进一步增大了两者的接触面积，提高了周向定位效果。
在一实施例中，定位部211的设置位置也可根据实际情况而定，如可设置在螺母210靠近阀芯座120的位置，也可以设置在螺母210靠近阀座110的端面处的位置，或者是设置在对应阀座110内部中间的位置等，只要在安装过程中，定位部211能够进入到阀座110的阀腔101，并与阀座110的内壁抵持定位即可。可以理解的，连接片220连接在螺母210与阀座110之间，则连接片220的外径尺寸会大于阀座110的内径尺寸，在一实施例中，定位部211可设于连接片220朝向阀腔101的一侧。在实际安装过程中，先将连接片220与螺母210固定连接，然后将螺母210设有定位部211的一侧插入到阀座110的阀腔101内，此时定位部211与阀座110的内壁抵持，保证周向定位，同时连接片220与阀座110的端面限位，以实现螺母210在阀座110轴向方向上的定位，然后将连接片220与阀座110固定连接，以实现螺母210与阀座110的稳定配合，简化了安装难度的同时，保证了螺母210与阀座110的同轴度。
在一实施例中，连接片220与阀座110焊接固定，以保证结构的稳定性，防止电子膨胀阀内部压力较高而脱开。连接片220与螺母210之间可以采用热熔工艺成型为一体结构。连接片220采用金属材料，螺母210采用非金属材料。
本申请技术方案电子膨胀阀中，通过对螺母组件200的改进，螺母组件200包括螺母210和与螺母210固定连接的连接片220，螺母210的一端设于阀座110的阀腔101内，螺母210的外壁凸设有定位部211，该定位部211与阀腔101的腔壁抵接定位，以实现螺母210与阀座110的径向定位；连接片220的一端与螺母210固定连接，另一端背离螺母210延伸并与阀座110的轴向端面固定连接，以实现螺母210与阀座110的轴向定位，从而实现了螺母210与阀座110轴向径向均定位的功能，保证了螺母210与阀座110的同轴度，进而保证了螺母210与阀芯座120的同轴度，防止了电子膨胀阀卡死的现象，提高了电子膨胀阀的工作性能。
为了进一步提高螺母210与阀座110的结构稳定性，参照图1至图3，在本申请一实施例中，所述定位部211包括呈圆柱状的连接段211a，所述连接段211a与所述阀座110的内壁过盈配合。可以理解的，连接段211a起到定位安装的作用，连接段211a与阀座110内壁过盈配合，实现了连接段211a与阀座110的固定连接的功能，保证了固定部211与阀座110的定位效果，从而保证了螺母210与阀座110径向定位的效果。在前述实施例的基础上，连接段211a可选为圆柱状结构，连接段211a的外壁为圆柱面，以增大与阀座110的定位面积，进一步保证定位效果。
在一实施例中，为了便于安装，所述定位部211还包括与所述连接段211a连接的导向段211b，所述导向段211b设于所述连接段211a靠近所述阀芯座120的一侧；所述导向段211b的外径小于所述连接段211a的外径。
在实际安装过程中，螺母210设有定位部211的一侧插入阀座110内，而定位部211的连接段211a外径尺寸与阀座110的内径尺寸为过盈配合关系，则可在连接段211a靠近阀芯座120的一侧设置导向段211b，该导向段211b的外径小于连接段211a的外径，则导向段211b的外径小于阀座110的内径尺寸，以使得导向段211b对螺母210的安装起到导向作用，使得定位部211能够更加快速地进入到阀座110的阀腔101内。
在一实施例中，导向段211b的形状结构可根据实际情况而定，如可以是为圆柱结构、圆锥形结构、或者斜面结构等等。在本实施例中，考虑到螺母210与阀座110自身的圆环状结构，为了具有更好的导向作用，该导向段211b采用圆环状的结构，导向段211b的外壁呈锥面设置，所述导向段211b的外径自与连接段211a连接的一端朝向背离所述连接段211a的一端逐渐减小。可以理解的，定位部211的外径尺寸沿远离阀芯座120的轴向方向上，呈逐渐增大之后维持稳定的趋势设置，在一实施例中，在定位部211的外壁上，导向段211b与连接端211a的连接处可倒圆角设置，提高导向段211b与连接端211a连接处的平滑度，从而使得在导向段211b的导向作用下，连接段211a更容易滑入到阀座110的阀腔101内，加快了定位部211与阀座110的安装效率。
为了保证电子膨胀阀内部压力的稳定性，在本申请一实施例中，参照图1至图3，所述定位部211与所述阀座110之间设有平衡通道103，所述平衡通道103用于连通所述定位部211在轴向方向上的两侧。
可以理解的，在前述实施例的基础上，定位部211的外壁与阀腔101的腔壁过盈配合，则定位部211与阀座110的定位配合将定位部211轴向方向上的两侧分隔成了两个区域，通过在定位部211与阀座110之间设置平衡通道103，以使得定位部211轴向方向上两侧的区域连通，即连通定位部211的上部区域与下部的阀腔101，从而保证了定位部211在轴向方向上的两侧的压力平衡，防止了压力不均而影响电子膨胀阀的性能。
在实际应用过程中，该平衡通道103的形状结构可根据实际情况而定，如可以是圆柱形通孔、锥形通孔或者斜孔、弯曲状通孔等异形通孔；当然，也可以是凹槽或缺口等结构。平衡通道103的数量也可根据实际情况而定，如可以设置为多个平衡通道103间隔分布于定位部211的周缘或者阀座110的内壁，以使得流体穿过平衡通道103时更加均衡。
本实施例中，如图4和图5所示，该平衡通道103的设置位置可根据实际情况而定，如该平衡通道103可设于所述定位部211；或者平衡通道103设于所述阀座110的内壁。当平衡通道103设于定位部211时，可以是定位部211上的通孔结构，也可以是定位部211的外壁内凹形成的缺口结构或凹槽结构等。当平衡通道103设于阀座110的内壁时，可以是阀座110的内壁向内凹设的缺口或者凹槽结构等。
在一实施例中，参照图1至图3，所述连接片220设有平衡孔221，所述平衡孔221用于连通连接片220在轴向方向上的两侧，所述平衡孔221与平衡通道103连通。
可以理解的，连接片220的一端固定于螺母210，另一端延伸至阀座110，则连接片220两侧的腔体被连接片220所分隔开，为了保证两侧的压力平衡，可在连接片220上开设平衡孔221，以连通平衡通道103与壳体400的内腔，从而将阀腔101与壳体400的内腔连通，进而保证了阀腔101与壳体400内腔的压力平衡，保证了整个电子膨胀阀内的压力平衡，增强了电子膨胀阀的稳定性。
在实际应用过程中，平衡孔221的形状结构可根据实际情况而定，如圆形通孔、方形通孔或者其它异形通孔等。可选地，可设置多个平衡孔221，多个平衡孔221围绕连接片220的周缘间隔均匀分布，以达到更好的平衡压力的效果。
在一实施例中，参照图1至图3，所述连接片220与所述定位部211间隔设置，所述连接片220、所述定位部211以及所述阀座110围合形成第一腔体102，所述平衡通道103与所述平衡孔221均与所述第一腔体102连通。
在实际应用过程中，定位部211与连接片220可以是贴合设置，也可以是间隔设置，两种方式对螺母210与阀座110之间的定位配合作用的影响不大，但是在安装工艺过程中时，定位部211为螺母210的外壁凸设的结构，定位部211与螺母210可为一体结构，而连接片220为金属材料，需要通过其它的热熔或者注塑等方式与螺母210固定，连接片220与定位部211间隔设置相比于贴合设置，具有更大的操作空间，进而简化了工艺难度。
在一实施例中，所述连接片220、所述定位部211以及所述阀座110围合形成第一腔体102，平衡通道103与平衡孔221均与第一腔体102连通，以实现壳体400内的腔体、第一腔体102以及阀腔101均连通的功能，进而达到整个电子膨胀阀的内腔压力平衡的效果，防止压力不均而影响电子膨胀阀的性能。
在本申请一实施例中，参照图1至图3，所述阀针组件300包括阀杆310和阀针部320，所述阀针部320设于所述阀杆310与所述阀芯座120之间；所述螺母210包括螺纹段212和固定段213；所述螺纹段212与所述阀杆310配合；所述固定段213与所述螺纹段212连接，并朝向所述阀芯座120的方向延伸设置，所述阀针部320与所述固定段213导向配合；所述连接片220与所述定位部211均设于所述固定段213的外壁。
可以理解的，螺纹段212和固定段213为轴向向背的两段，阀杆310穿设于螺纹段212，并与螺纹段212的螺纹212a螺纹配合，使得阀杆310相对于螺纹段212的螺纹212a转动时能够转换为阀杆310沿轴向方向上的运动，进而带动阀针部320轴向运动，固定段213的内壁与阀针部320导向配合，以保证阀针部320运动的稳定性。连接片220与定位部211均设于固定段213的外壁，通过定位部211和连接片220与阀座110的定位配合作用，保证了固定段213与阀座110的同轴度，而固定段213的内壁与阀针部320导向配合，以使得阀针部320能够更加顺畅地进入到阀芯座120的阀口121处，提高了电子膨胀阀的使用性能。
具体地，所述固定段213包括安装部213a和延伸部213b；所述安装部213a与所述螺纹段212连接，所述连接片220和所述定位部211均设于所述安装部213a的外壁；所述延伸部213b的一端与所述安装部213a连接，另一端朝向所述阀芯座120轴向延伸设置。安装部213a起到安装定位的作用，连接片220与定位部211均设置在安装部213a上，以保证安装部213a与阀座110的同轴度；延伸部213b与安装部213a连接，并朝向阀芯座120轴向延伸，以保证与阀针部320的导向长度，进而保证阀针部320与阀芯座120的同轴度。
在一实施例中，所述延伸部213b、所述安装部213a以及所述定位部211为一体结构。本实施例中，通过在螺母210上设置朝向阀芯座120延伸的延伸部213b，同时螺母210通过连接片220和定位部211实现与阀座110的定位功能，相比于现有技术中通过在螺母210与阀芯座120之间设置导向套来定位的方式，省掉了导向套这一部件，减少了加工和装配步骤，降低了生产和装配成本。
在一实施例中，所述延伸部213b的外壁与所述定位部211呈台阶状设置，所述延伸部213b的外径小于所述定位部211的外径。可以理解的，延伸部213b主要起到对内部的阀针部320的导向作用，而定位部211起到与外部的阀座110的内壁抵持定位的作用，则可将延伸部213b的外径小于定位部211的外径，节省材料的同时保证了与阀座110的定位作用以及对阀针部320的导向作用。
在一实施例中，所述延伸部213b与所述阀芯座120间隙设置。可以理解的，螺母210通过连接片220与定位部211实现与阀座110的定位，以保证螺母210与阀芯座120的同轴度，同时通过延伸部213b与阀针部320导向配合，使得阀针部320能够与阀芯座120同轴，从而延伸部213b与阀芯座120之间可以不接触，在一实施例中，延伸部213b与阀芯座120间隙设置，以降低流体经过时的噪音。
在一实施例中，所述延伸部213b设有导流通孔201。该导流通孔201可以为闭合通孔或者缺口。所述导流通孔201的数量设置为多个，多个所述导流通孔201围绕所述延伸部213b的周缘间隔设置。设置多个导流通孔201，增多了流体进入延伸部213b内部的通道，多个导流通孔201围绕延伸部213b的周缘设置，使得流体能够从延伸部213b的周缘均匀进入，以使得结构更加稳定。
在本申请一实施例中，参照图1至图3，所述阀针部320包括阀针套321和阀针322；所述阀针套321与所述阀杆310连接，所述阀针套321与所述固定段213的内壁导向配合；所述阀针322连接于所述阀针套321背离所述阀杆310的一侧；所述阀杆310可驱动所述阀针322沿所述螺母210的轴向方向靠近或远离所述阀芯座120运动，以封堵或打开所述阀口121。
在本申请一实施例中，参照图1至图3，所述电子膨胀阀还包括转子组件500，所述转子组件500设于所述壳体400内，并与所述阀针组件300连接，所述转子组件500带动所述阀针组件300转动，以使所述阀针组件300在所述螺母210内轴向运动。
可以理解的，阀杆310的一端固定连接转子组件500，另一端穿设于阀针套321内，以与阀针322连接，通过转子组件500的转动带动阀杆310转动运动，而阀杆310与螺纹段212螺纹配合，从而当螺母210与阀座110固定连接时，阀杆310在转动的同时会沿着螺母210的轴向方向运动，进而带动阀针套321沿着固定段213的内壁轴向运动，以使得阀针322沿着螺母210的轴向靠近或远离阀芯座120运动，以达到封堵或打开阀口121的目的。
本实施例中，阀针322的一端安装于阀针套321，另一端插设于阀芯座120的阀口121，阀针套321起到导向安装的作用，以与固定段213的内壁导向配合，以使得阀针322的轴向运动更加稳定。
本申请还提出一种制冷设备，该制冷设备包括电子膨胀阀，该电子膨胀阀的具体结构参照上述实施例，由于本制冷设备采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。可选地，电器设备可以为空调器或者冰箱等。
以上所述仅为本申请的优选实施例，并非因此限制本申请的专利范围，凡是在本申请的发明构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (17)

  1. 一种电子膨胀阀，其中，所述电子膨胀阀包括：
    阀座，所述阀座具有阀腔；
    螺母，所述螺母的一端设于所述阀腔内，所述螺母的外壁凸设有呈圆环状的定位部，所述定位部与所述阀腔的腔壁抵接定位；以及
    连接片，所述连接片的一端与所述螺母固定连接，另一端背离所述螺母延伸并与所述阀座的轴向端面固定连接。
  2. 如权利要求1所述的电子膨胀阀，其中，所述定位部包括呈圆柱状的连接段，所述连接段与所述阀座的内壁过盈配合。
  3. 如权利要求2所述的电子膨胀阀，其中，所述定位部还包括与所述连接段连接的导向段，所述导向段设于所述连接段远离所述连接片的一侧；所述导向段的外径小于所述连接段的外径。
  4. 如权利要求3所述的电子膨胀阀，其中，所述导向段的外径自与所述连接段连接的一端朝向背离所述连接段的一端逐渐减小。
  5. 如权利要求1至4任意一项所述的电子膨胀阀，其中，所述定位部与所述阀座之间设有平衡通道，所述平衡通道用于连通所述定位部在轴向方向上的两侧。
  6. 如权利要求5所述的电子膨胀阀，其中，所述连接片设有平衡孔，所述平衡孔用于连通所述连接片在轴向方向上的两侧，所述平衡孔与所述平衡通道连通。
  7. 如权利要求6所述的电子膨胀阀，其中，所述连接片与所述定位部间隔设置，所述连接片、所述定位部以及所述阀座围合形成第一腔体，所述平衡通道与所述平衡孔均与所述第一腔体连通。
  8. 如权利要求5所述的电子膨胀阀，其中，所述平衡通道设于所述定位部；和/或，所述平衡通道设于所述阀座。
  9. 如权利要求1至4任意一项所述的电子膨胀阀，其中，所述连接片与所述阀座焊接固定。
  10. 如权利要求1至4任意一项所述的电子膨胀阀，其中，所述电子膨胀阀还包括阀杆、与所述阀杆连接的阀针部以及设于所述阀座的阀芯座；
    所述螺母包括：
    螺纹段，所述螺纹段与所述阀杆配合；和
    固定段，所述固定段与所述螺纹段连接，并朝向所述阀芯座的方向延伸设置，所述阀针部与所述固定段导向配合；所述连接片与所述定位部均设于所述固定段的外壁。
  11. 如权利要求10所述的电子膨胀阀，其中，所述固定段包括：
    安装部，所述安装部与所述螺纹段连接，所述连接片和所述定位部均设于所述安装部的外壁；和
    延伸部，所述延伸部的一端与所述安装部连接，另一端朝向所述阀芯座轴向延伸设置。
  12. 如权利要求11所述的电子膨胀阀，其中，所述延伸部的外壁与所述定位部呈台阶状设置，所述延伸部的外径小于所述定位部的外径。
  13. 如权利要求11所述的电子膨胀阀，其中，所述延伸部与所述阀芯座间隙设置。
  14. 如权利要求11所述的电子膨胀阀，其中，所述延伸部设有导流通孔。
  15. 如权利要求14所述的电子膨胀阀，其中，所述导流通孔的数量设置为多个，多个所述导流通孔围绕所述延伸部的周缘间隔设置。
  16. 如权利要求11所述的电子膨胀阀，其中，所述延伸部、所述安装部以及所述定位部为一体结构。
  17. 一种制冷设备，其中，包括如权利要求1至16任意一项所述的电子膨胀阀。
PCT/CN2021/120607 2020-12-14 2021-09-26 电子膨胀阀以及制冷设备 WO2022127264A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2023532421A JP2023551273A (ja) 2020-12-14 2021-09-26 電子膨張弁及び冷却機器
EP21905195.0A EP4242498A4 (en) 2020-12-14 2021-09-26 ELECTRONIC EXPANSION AND REFRIGERATION DEVICE
US18/205,210 US20230304587A1 (en) 2020-12-14 2023-06-02 Electronic expansion valve and refrigeration device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011483239.0 2020-12-14
CN202011483239.0A CN112524261A (zh) 2020-12-14 2020-12-14 电子膨胀阀以及制冷设备

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/205,210 Continuation US20230304587A1 (en) 2020-12-14 2023-06-02 Electronic expansion valve and refrigeration device

Publications (1)

Publication Number Publication Date
WO2022127264A1 true WO2022127264A1 (zh) 2022-06-23

Family

ID=75000520

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/120607 WO2022127264A1 (zh) 2020-12-14 2021-09-26 电子膨胀阀以及制冷设备

Country Status (5)

Country Link
US (1) US20230304587A1 (zh)
EP (1) EP4242498A4 (zh)
JP (1) JP2023551273A (zh)
CN (2) CN116428371A (zh)
WO (1) WO2022127264A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116428371A (zh) * 2020-12-14 2023-07-14 广东威灵电机制造有限公司 电子膨胀阀以及制冷设备
CN216742868U (zh) * 2021-03-17 2022-06-14 盾安汽车热管理科技有限公司 电子膨胀阀
CN215806346U (zh) * 2021-05-24 2022-02-11 浙江盾安禾田金属有限公司 电子膨胀阀
CN116816948A (zh) * 2021-07-05 2023-09-29 广东威灵电机制造有限公司 电子膨胀阀及制冷设备
CN113819249A (zh) * 2021-09-29 2021-12-21 广东威灵电机制造有限公司 电子膨胀阀及制冷设备
CN219366819U (zh) * 2022-01-28 2023-07-18 浙江盾安禾田金属有限公司 螺母座及电子膨胀阀
CN117515193A (zh) * 2022-07-27 2024-02-06 广东威灵电机制造有限公司 电子膨胀阀组件、电子膨胀阀及制冷设备
CN117823633A (zh) * 2022-09-29 2024-04-05 浙江三花汽车零部件有限公司 一种电动阀
CN119737454A (zh) * 2023-09-29 2025-04-01 浙江盾安人工环境股份有限公司 电子膨胀阀及其加工方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000213660A (ja) * 1999-01-22 2000-08-02 Samsung Electronics Co Ltd 冷凍サイクル用電子膨張弁
CN107917276A (zh) * 2016-10-10 2018-04-17 盾安环境技术有限公司 电子膨胀阀
CN209012453U (zh) * 2018-08-17 2019-06-21 浙江盾安禾田金属有限公司 电子膨胀阀
CN110836271A (zh) * 2018-08-17 2020-02-25 浙江盾安禾田金属有限公司 电子膨胀阀及使用该电子膨胀阀的空调系统
CN211145371U (zh) * 2019-11-27 2020-07-31 浙江盾安禾田金属有限公司 电子膨胀阀
CN112524261A (zh) * 2020-12-14 2021-03-19 广东威灵电机制造有限公司 电子膨胀阀以及制冷设备
CN213954361U (zh) * 2020-12-14 2021-08-13 广东威灵电机制造有限公司 电子膨胀阀以及制冷设备

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5684746B2 (ja) * 2012-02-10 2015-03-18 株式会社鷺宮製作所 膨張弁
CN103453699B (zh) * 2012-05-29 2016-08-10 浙江三花股份有限公司 一种电子膨胀阀
JP6214487B2 (ja) * 2014-07-18 2017-10-18 株式会社鷺宮製作所 電動弁
JP6214488B2 (ja) * 2014-07-18 2017-10-18 株式会社鷺宮製作所 電動弁
CN107289144B (zh) * 2016-04-11 2020-09-29 浙江盾安人工环境股份有限公司 一种电子膨胀阀
WO2018137636A1 (zh) * 2017-01-26 2018-08-02 浙江三花智能控制股份有限公司 电子膨胀阀
JP6845817B2 (ja) * 2018-02-01 2021-03-24 株式会社鷺宮製作所 電動弁及び冷凍サイクルシステム
CN110836562A (zh) * 2018-08-17 2020-02-25 浙江盾安禾田金属有限公司 电子膨胀阀及使用该电子膨胀阀的空调系统
JP7080194B2 (ja) * 2019-02-08 2022-06-03 株式会社鷺宮製作所 電動弁、および、それを備える冷凍サイクルシステム
JP7105721B2 (ja) * 2019-04-12 2022-07-25 株式会社鷺宮製作所 電動弁及び冷凍サイクルシステム
CN111853252A (zh) * 2019-04-30 2020-10-30 浙江三花智能控制股份有限公司 一种电子膨胀阀
CN211175614U (zh) * 2019-11-27 2020-08-04 浙江盾安禾田金属有限公司 降噪套以及电子膨胀阀

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000213660A (ja) * 1999-01-22 2000-08-02 Samsung Electronics Co Ltd 冷凍サイクル用電子膨張弁
CN107917276A (zh) * 2016-10-10 2018-04-17 盾安环境技术有限公司 电子膨胀阀
CN209012453U (zh) * 2018-08-17 2019-06-21 浙江盾安禾田金属有限公司 电子膨胀阀
CN110836271A (zh) * 2018-08-17 2020-02-25 浙江盾安禾田金属有限公司 电子膨胀阀及使用该电子膨胀阀的空调系统
CN211145371U (zh) * 2019-11-27 2020-07-31 浙江盾安禾田金属有限公司 电子膨胀阀
CN112524261A (zh) * 2020-12-14 2021-03-19 广东威灵电机制造有限公司 电子膨胀阀以及制冷设备
CN213954361U (zh) * 2020-12-14 2021-08-13 广东威灵电机制造有限公司 电子膨胀阀以及制冷设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4242498A4

Also Published As

Publication number Publication date
CN116428371A (zh) 2023-07-14
CN112524261A (zh) 2021-03-19
EP4242498A4 (en) 2024-05-01
JP2023551273A (ja) 2023-12-07
EP4242498A1 (en) 2023-09-13
US20230304587A1 (en) 2023-09-28

Similar Documents

Publication Publication Date Title
WO2022127264A1 (zh) 电子膨胀阀以及制冷设备
CN213954361U (zh) 电子膨胀阀以及制冷设备
WO2012048581A1 (zh) 一种电动阀
CN112503189B (zh) 电子膨胀阀及制冷设备
WO2012048658A1 (zh) 一种电动阀
EP3872380B1 (en) Electronic expansion valve
WO2023142223A1 (zh) 阀针组件、电子膨胀阀和制冷设备
EP3961073A1 (en) Gas valve and gas appliance
CN113883284A (zh) 电动阀以及冷冻循环系统
CN113819249A (zh) 电子膨胀阀及制冷设备
CN113566459A (zh) 电子膨胀阀
WO2022012537A1 (zh) 节流阀及换热系统
EP4459161A1 (en) Valve needle assembly, electronic expansion valve, and refrigeration equipment
CN217784255U (zh) 电子膨胀阀及制冷设备
CN112576763B (zh) 电动阀以及冷冻循环系统
CN112524260A (zh) 电子膨胀阀以及制冷设备
WO2024021815A1 (zh) 电子膨胀阀以及制冷设备
WO2024022000A1 (zh) 电子膨胀阀组件、电子膨胀阀及制冷设备
CN113566460A (zh) 电子膨胀阀
CN217784253U (zh) 电子膨胀阀及制冷设备
WO2020083362A1 (zh) 电子膨胀阀
CN113280122B (zh) 电动阀以及冷冻循环系统
EP4446627A1 (en) Electronic expansion valve and refrigeration equipment
CN217502605U (zh) 电子膨胀阀
CN114923014B (zh) 电子膨胀阀及制冷设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21905195

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023532421

Country of ref document: JP

ENP Entry into the national phase

Ref document number: 2021905195

Country of ref document: EP

Effective date: 20230606

NENP Non-entry into the national phase

Ref country code: DE