WO2024021815A1 - 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
WO2024021815A1
WO2024021815A1 PCT/CN2023/096098 CN2023096098W WO2024021815A1 WO 2024021815 A1 WO2024021815 A1 WO 2024021815A1 CN 2023096098 W CN2023096098 W CN 2023096098W WO 2024021815 A1 WO2024021815 A1 WO 2024021815A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
electronic expansion
nut
expansion valve
section
Prior art date
Application number
PCT/CN2023/096098
Other languages
English (en)
French (fr)
Inventor
陈超
杨茂
任纬峰
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
Publication of WO2024021815A1 publication Critical patent/WO2024021815A1/zh

Links

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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F16K3/267—Combination of a sliding valve and a lift valve
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • 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
    • 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
    • F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
    • 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
    • F16K39/00—Devices for relieving the pressure on the sealing faces
    • F16K39/04—Devices for relieving the pressure on the sealing faces for sliding 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
    • 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
    • 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 field of fluid control technology, and in particular to an electronic expansion valve and refrigeration equipment.
  • electronic expansion valves usually include 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 achieving adjustment. flow function.
  • the electronic expansion valve is prone to get stuck, which affects the working performance of the electronic expansion valve.
  • the main purpose of this application is to propose an electronic expansion valve, aiming to solve at least one problem existing in the electronic expansion valve in the prior art.
  • the electronic expansion valve proposed in this application includes a valve seat, a nut and a connecting piece; the valve seat has a valve cavity; one end of the nut is located in the valve cavity, and the outer wall of the nut protrudes There is an annular positioning part, the positioning part is in contact with the cavity wall of the valve cavity; one end of the connecting piece is fixedly connected to the nut, and the other end extends away from the nut and is connected with the valve cavity.
  • the axial end face of the seat is fixedly connected.
  • the positioning part includes a cylindrical connecting section, and the connecting section interferes with the inner wall of the valve seat.
  • the positioning part further includes a guide section connected to the connecting section, and the guide section is provided on a side of the connecting section away from the connecting piece; the outer diameter of the guide section smaller than the outer diameter of the connecting section.
  • the outer diameter of the guide section gradually decreases from an end connected to the connecting section toward an end away from the connecting section.
  • a balance channel is provided between the positioning part and the valve seat, and the balance channel is used to connect both sides of the positioning part in the axial direction.
  • the connecting piece is provided with a balance hole
  • the balance hole is used to connect both sides of the connecting piece in the axial direction
  • the balance hole is connected with the balance channel
  • the connecting piece is spaced apart from the positioning part, the connecting piece, the positioning part and the valve seat enclose a first cavity, and the balance channel and the balance The holes are all connected with the first cavity.
  • the balance channel is provided in the positioning part.
  • 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 provided on the valve seat;
  • the nut includes a threaded section and a fixed section; The threaded section cooperates with the valve stem;
  • the fixed section is connected with the threaded section and extends toward the direction of the valve core seat;
  • the valve needle portion guides and cooperates with the fixed section; the connection Both the piece and the positioning portion are provided on the outer wall of the fixed section.
  • the fixed section includes:
  • a mounting part is connected to the threaded section, and the connecting piece and the positioning part are both provided on the outer wall of the mounting part;
  • An extension part one end of which is connected to the mounting part, and the other end extends axially toward the valve core seat.
  • the outer wall of the extension part and the positioning part are arranged in a step shape, and the outer diameter of the extension part is smaller than the outer diameter of the positioning part.
  • a gap is provided between the extension portion and the valve core seat.
  • the extension portion is provided with a guide hole.
  • the number of the guide through holes is set to multiple, and the plurality of guide through holes are arranged at intervals around the periphery of the extension part.
  • the extension part, the mounting part and the positioning part are an integral structure.
  • 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 located on the In the valve cavity, an annular positioning portion is protruding from the outer wall of the nut, and the positioning portion abuts and positions 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 surface of the valve seat.
  • Figure 1 is a schematic structural diagram of an embodiment of the electronic expansion valve of the present application.
  • Figure 2 is another structural schematic diagram of an embodiment of the electronic expansion valve of the present application.
  • Figure 3 is a schematic structural diagram of an embodiment of the nut assembly in the electronic expansion valve of the present application.
  • Figure 4 is a schematic structural diagram of the cooperation between the positioning part and the valve seat in the embodiment of the present application.
  • Figure 5 is another structural schematic diagram of the cooperation between the positioning part and the valve seat in the embodiment of the present application.
  • This 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 housing 400 is disposed on the valve seat 110 and butts with the valve seat 110 to enclose the nut assembly 200,
  • the valve needle assembly 300 and the accommodation cavity of the rotor assembly 500 realize the integrity and sealing of the overall structure of the electronic expansion valve.
  • the nut assembly 200 is fixedly connected to the valve seat 110, and the valve needle assembly 300 is movably disposed in the nut assembly 200 to move up and down along the axis of the nut assembly 200 to approach the valve port 121 of the valve core seat 120 or to move away from the valve.
  • the valve port 121 of the core seat 120 moves to achieve the function of blocking or opening the valve port 121.
  • the adjustment electronics can be realized according to the distance between the valve needle assembly 300 and the valve core seat 120 or the degree of extension into the valve port 121. The opening of the expansion valve thereby regulates the fluid flow.
  • the nut assembly 200 includes a nut 210 and a connecting piece 220.
  • One end of the nut 210 is located in the valve cavity 101 of the valve seat 110.
  • An annular positioning portion 211 is protruding from the outer wall of the nut 210. The positioning portion 211 is in contact with the valve cavity 101.
  • the cavity wall is abutted and positioned; one end of the connecting piece 220 is fixedly connected to the nut 210, and the other end extends away from the nut 21 and is fixedly connected to the axial end surface of the valve seat 110.
  • the nut 210 serves to install and guide the valve needle assembly 300 so that the valve needle assembly 300 can move axially within the nut 210 to successfully block the valve port 121 or open the valve port 122.
  • the connecting piece 220 serves as a fixed connection between the nut 210 and the valve seat 110 to ensure the stability of the structure.
  • the outer wall of the nut 210 has a protruding positioning portion 211, which is positioned against the inner wall of the valve seat 110, thereby realizing the positioning of the nut 210 and the valve seat 110 in the radial direction; at the same time, the connecting piece 220 and the valve seat are connected
  • the axial end face fixed connection of 110 realizes the positioning of the nut 210 and the valve seat 110 in the axial direction, thereby ensuring the function of positioning the nut 210 and the valve seat 110 in both the radial and axial directions, that is, ensuring that the nut 210 and the valve seat 110 are positioned in both radial and axial directions.
  • the coaxiality between the nut 210 and the valve seat 110 ensures the coaxiality between the nut 210 and the valve core seat 120 on the valve seat 110, thereby allowing the valve needle assembly 300 to move more smoothly into or away from the valve port 121, preventing It eliminates the jamming phenomenon of the electronic expansion valve and improves the working performance of the electronic expansion valve.
  • the shape and structure of the positioning part 211 can be determined according to the actual situation. For example, it can be set as a circular ring structure.
  • the positioning part 211 surrounds the outer periphery of the nut 210 and forms a ring with the nut 210 .
  • the outer wall of the positioning portion 211 and the inner wall of the valve seat 110 can resist to ensure the radial positioning of the nut 210 and the valve seat 110 .
  • the positioning part 211 may be an annular ridge structure or a cylindrical structure with a certain axial length. In this embodiment, the positioning effect and processing convenience are taken into consideration.
  • the positioning part 211 adopts a cylindrical structure with a certain axial length.
  • the outer cylindrical surface of the positioning part 211 resists the inner cylindrical surface of the valve seat 110, further increasing the contact area between the two and improving the circumferential positioning effect. .
  • the position of the positioning part 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 it can be set at a position where the nut 210 is close to the end surface of the valve seat 110. Or it can be set at a position corresponding to the middle of the interior of the valve seat 110 , etc., as long as the positioning portion 211 can enter the valve cavity 101 of the valve seat 110 and resist and position the inner wall of the valve seat 110 during the installation process. It can be understood that the connecting piece 220 is connected between the nut 210 and the valve seat 110, so 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 chamber 101. During the actual installation process, the connecting piece 220 is first fixedly connected to the nut 210, 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. At this time, the positioning portion 211 is connected to the valve seat 110. The inner wall resists to ensure circumferential positioning. At the same time, the connecting piece 220 and the end face of the valve seat 110 are limited to realize the positioning of the nut 210 in the axial direction of the valve seat 110. Then the connecting piece 220 is fixedly connected to the valve seat 110 to The stable cooperation between the nut 210 and the valve seat 110 is achieved, which simplifies the installation difficulty and ensures the coaxiality between 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 detaching due to high internal pressure.
  • the connecting piece 220 and the nut 210 can be formed into an integrated structure 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 to the nut 210.
  • One end of the nut 210 is located in the valve cavity 101 of the valve seat 110.
  • the outer wall of 210 is protruding with a positioning portion 211, which is in contact with the cavity wall of the valve chamber 101 to achieve the radial positioning of the nut 210 and the valve seat 110; one end of the connecting piece 220 is fixedly connected to the nut 210, and the other end of the connecting piece 220 is fixedly connected to the nut 210.
  • One end extends away from the nut 210 and is fixedly connected to the axial end face of the valve seat 110 to realize the axial positioning of the nut 210 and the valve seat 110, thus realizing the function of axial and radial positioning of the nut 210 and the valve seat 110, ensuring that The coaxiality between the nut 210 and the valve seat 110 ensures the coaxiality between the nut 210 and the valve core seat 120, preventing the electronic expansion valve from getting stuck, and improving the working performance of the electronic expansion valve.
  • the positioning portion 211 includes a cylindrical connecting section 211a, and the connecting section 211a is connected to the connecting section 211a.
  • the inner wall of the valve seat 110 has an interference fit.
  • the connecting section 211a plays a role in positioning and installation.
  • the connecting section 211a is an interference fit with the inner wall of the valve seat 110, realizing the function of fixed connection between the connecting section 211a and the valve seat 110, ensuring that the fixed portion 211 and the valve seat 110 are securely connected. The positioning effect is thereby guaranteed to ensure the radial positioning effect of the nut 210 and the valve seat 110.
  • the connecting section 211a can be selected as a cylindrical structure, and the outer wall of the connecting section 211a can be a cylindrical surface to increase the positioning area with the valve seat 110 and further ensure the positioning effect.
  • the positioning part 211 also includes a guide section 211b connected to the connecting section 211a.
  • the guide section 211b is provided on a side of the connecting section 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 size of the connecting section 211a of the positioning portion 211 and the inner diameter size of the valve seat 110 are in an interference fit relationship, so the connection can be
  • a guide section 211b is provided on the side of the section 211a close to the valve core seat 120.
  • the outer diameter of the guide section 211b is smaller than the outer diameter of the connecting section 211a.
  • the outer diameter of the guide section 211b is smaller than the inner diameter of the valve seat 110, so that the guide section 211b
  • the installation of the nut 210 plays a guiding role, so that the positioning part 211 can enter the valve cavity 101 of the valve seat 110 more quickly.
  • the shape and structure of the guide section 211b can be determined according to the actual situation, such as a cylindrical structure, a conical structure, or a sloped structure, etc.
  • the guide section 211b adopts an annular structure, and the outer wall of the guide section 211b is arranged in a tapered surface.
  • the outer diameter of the guide section 211b gradually decreases from the end connected to the connecting section 211a toward the end away from the connecting section 211a. It can be understood that the outer diameter of the positioning portion 211 is set in a trend that gradually increases and then remains stable along the axial direction away from the valve core seat 120.
  • the guide section The connection between 211b and the connecting end 211a can be rounded to improve the smoothness of the connection between the guide section 211b and the connecting end 211a, so that under the guidance of the guide section 211b, the connecting section 211a can more easily slide into the valve seat 110 In the valve cavity 101, the installation efficiency of the positioning part 211 and the valve seat 110 is accelerated.
  • a balance channel 103 is provided between the positioning portion 211 and the valve seat 110.
  • 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 part 211 is in interference fit with the cavity wall of the valve chamber 101, and the positioning fit between the positioning part 211 and the valve seat 110 will push both sides of the positioning part 211 in the axial direction.
  • a balance channel 103 is provided between the positioning part 211 and the valve seat 110 so that the areas on both sides of the positioning part 211 in the axial direction are connected, that is, the upper area of the positioning part 211 is connected with the lower valve
  • the cavity 101 thus ensures 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.
  • it can be a cylindrical through hole, a tapered through hole, an oblique hole, a curved through hole, and other special-shaped through holes; of course, it can also be a Structures such as grooves or notches.
  • the number of balance channels 103 can also be determined according to the actual situation.
  • multiple balance channels 103 can be arranged at intervals around the periphery of the positioning portion 211 or the inner wall of the valve seat 110 so that the fluid passes through the balance channels 103 in a more balanced manner.
  • the location of the balance channel 103 can be determined according to the actual situation.
  • the balance channel 103 can be located at the positioning portion 211; or the balance channel 103 can be located at the positioning portion 211.
  • the balance channel 103 may be a through-hole structure on the positioning part 211, or it may be a notch structure or a groove structure formed inwardly on the outer wall of the positioning part 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 that is concave inward on the inner wall of the valve seat 110.
  • the connecting piece 220 is provided with a balancing hole 221, which is used to connect both sides of the connecting piece 220 in the axial direction.
  • the balancing hole 221 and Balance channel 103 is connected.
  • one end of the connecting piece 220 is fixed to the nut 210 and the other end extends to the valve seat 110. Then the cavities on both sides of the connecting piece 220 are separated by the connecting piece 220. In order to ensure the pressure balance on both sides, it can be A balance hole 221 is provided on the connecting piece 220 to connect the balance channel 103 and the inner cavity of the housing 400, thereby connecting the valve chamber 101 and the inner cavity of the housing 400, thereby ensuring the pressure between the valve chamber 101 and the inner cavity of the housing 400. Balance ensures the pressure balance within the entire electronic expansion valve and enhances the stability of the electronic expansion valve.
  • the shape and structure of the balancing hole 221 can be determined according to the actual situation, such as a circular through hole, a square through hole, or other special-shaped through holes.
  • multiple balancing holes 221 may be provided, and the multiple balancing holes 221 are evenly spaced around the periphery of the connecting piece 220 to achieve a better pressure balancing effect.
  • the connecting piece 220 is spaced apart from the positioning part 211 , and the connecting piece 220 , the positioning part 211 and the valve seat 110 enclose a first cavity.
  • the body 102 , the balance channel 103 and the balance hole 221 are all connected with the first cavity 102 .
  • the positioning part 211 and the connecting piece 220 can be arranged closely or at intervals. The two methods have little impact on the positioning and cooperation between the nut 210 and the valve seat 110.
  • the positioning part 211 is a protruding structure on the outer wall of the nut 210.
  • the positioning part 211 and the nut 210 can be an integral structure, and the connecting piece 220 is made of metal material and needs to be fixed with the nut 210 through other methods such as hot melting or injection molding.
  • the connecting piece 220 and the positioning part 211 are spaced apart from each other, which provides a larger operating space, thereby simplifying the process difficulty.
  • the connecting piece 220, the positioning portion 211 and the valve seat 110 enclose the first cavity 102, and the balance channel 103 and the balance hole 221 are both connected to the first cavity 102 to achieve The cavity in the casing 400 , the first cavity 102 and the valve cavity 101 are all connected, thereby achieving the effect of balancing the internal cavity pressure of the entire electronic expansion valve and 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.
  • the valve needle portion 320 is provided between 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 cooperates 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 guided and matched with the fixed section 213; the connecting piece 220 and the positioning portion 211 are both provided on the outer wall of the fixed section 213.
  • the threaded section 212 and the fixed section 213 are two sections axially facing away from each other.
  • the valve stem 310 penetrates the threaded section 212 and threadably cooperates 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 movement of the valve stem 310 in the axial direction, thereby driving the valve needle portion 320 to move axially.
  • the inner wall of the fixed section 213 guides and cooperates with the valve needle portion 320 to ensure the stability of the movement of the valve needle portion 320. sex.
  • the connecting piece 220 and the positioning part 211 are both provided on the outer wall of the fixed section 213.
  • the coaxiality of the fixed section 213 and the valve seat 110 is ensured, and 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, thereby improving the performance of the electronic expansion valve.
  • the fixed section 213 includes a mounting part 213a and an extension part 213b; the mounting part 213a is connected to the threaded section 212, and the connecting piece 220 and the positioning part 211 are both provided on the mounting part 213a.
  • the mounting part 213a plays the role of installation and positioning.
  • the connecting piece 220 and the positioning part 211 are both arranged on the mounting part 213a to ensure the coaxiality of the mounting part 213a and the valve seat 110; the extension part 213b is connected to the mounting part 213a and faces The valve core seat 120 extends axially to ensure the guide length with the valve needle portion 320, thereby ensuring the coaxiality between the valve needle portion 320 and the valve core seat 120.
  • the extension part 213b, the mounting part 213a and the positioning part 211 are an integral structure.
  • the nut 210 realizes the positioning function with the valve seat 110 through the connecting piece 220 and the positioning portion 211.
  • the guide sleeve is omitted, the processing and assembly steps are reduced, and the production and assembly costs are reduced.
  • the outer wall of the extension part 213b and the positioning part 211 are arranged in a step shape, and the outer diameter of the extension part 213b is smaller than the outer diameter of the positioning part 211.
  • the extension part 213b mainly plays a guiding role for the internal valve needle part 320
  • the positioning part 211 plays a role of resisting and positioning the inner wall of the external valve seat 110, so that the outer diameter of the extension part 213b can be adjusted. It is smaller than the outer diameter of the positioning part 211 , thereby saving material while ensuring the positioning effect with the valve seat 110 and the guiding effect on the valve needle part 320 .
  • the extension portion 213b is provided with a gap from 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 part 211 to ensure the coaxiality of the nut 210 and the valve core seat 120. At the same time, the extension part 213b is guided and matched with the valve needle part 320, so that The valve needle part 320 can be coaxial with the valve core seat 120, so that there may be no contact between the extension part 213b and the valve core seat 120. In one embodiment, a gap is provided between the extension part 213b and the valve core seat 120 to reduce the time required for the fluid to pass through. noise.
  • the extension portion 213b is provided with a guide hole 201 .
  • the guide hole 201 may be a closed through hole or a gap.
  • the number of the guide holes 201 is multiple, and the plurality of guide holes 201 are spaced around the periphery of the extension part 213b.
  • the multiple guide holes 201 are provided to increase the channels for fluid to enter the interior of the extension part 213b.
  • the multiple guide holes 201 are arranged around the periphery of the extension part 213b, so that fluid can enter evenly from the periphery of the extension part 213b, making 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 connected to the valve stem 310. 321 cooperates with the inner wall guide 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 nut 210 moves toward or away from the valve core seat 120 in the axial direction to block or open the valve port 121 .
  • the electronic expansion valve further includes a rotor assembly 500.
  • the rotor assembly 500 is provided in the housing 400 and 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 within 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.
  • the rotation of the rotor assembly 500 drives the valve stem 310 to rotate, and the valve stem 310 It is threadedly matched 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
  • the axial movement causes the valve needle 322 to move closer 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 .
  • 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.
  • the valve needle sleeve 321 plays a role of guide installation to guide with the inner wall of the fixed section 213. Cooperate to make the axial movement of the valve needle 322 more stable.
  • the refrigeration equipment includes an electronic expansion valve.
  • the specific structure of the electronic expansion valve refers to the above-mentioned embodiments. Since this refrigeration equipment adopts all the technical solutions of all the above-mentioned embodiments, it at least has the characteristics of the above-mentioned embodiments. All the beneficial effects brought by the technical solutions 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)

Abstract

一种电子膨胀阀，包括阀座（110）、螺母（210）以及连接片（220），阀座具有阀腔（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），定位部与阀座的腔壁抵接定位，连接片（220）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。还公开了一种包括该电子膨胀阀的制冷设备。

Description

电子膨胀阀以及制冷设备
本申请要求于2022年07月27日申请的、申请号为202210890192.2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存在的至少一个问题。
 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。
 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。在一实施例中，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，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至7任意一项所述的电子膨胀阀，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8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9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或12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至13任意一项所述的电子膨胀阀，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至15任意一项所述的电子膨胀阀，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/CN2023/096098 2022-07-27 2023-05-24 电子膨胀阀以及制冷设备 WO2024021815A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210890192.2A CN117515193A (zh) 2022-07-27 2022-07-27 电子膨胀阀组件、电子膨胀阀及制冷设备
CN202210890192.2 2022-07-27

Publications (1)

Publication Number Publication Date
WO2024021815A1 true WO2024021815A1 (zh) 2024-02-01

Family

ID=89705240

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/096098 WO2024021815A1 (zh) 2022-07-27 2023-05-24 电子膨胀阀以及制冷设备

Country Status (2)

Country Link
CN (1) CN117515193A (zh)
WO (1) WO2024021815A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1161061A (en) * 1965-05-18 1969-08-13 Reavell Fahie Ltd Improvements in or relating to Fluid FLow Control Valves.
JP2011069450A (ja) * 2009-09-28 2011-04-07 Keihin Corp 弁装置
CN103994231A (zh) * 2014-04-30 2014-08-20 吴俊云 一种电子膨胀阀
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1161061A (en) * 1965-05-18 1969-08-13 Reavell Fahie Ltd Improvements in or relating to Fluid FLow Control Valves.
JP2011069450A (ja) * 2009-09-28 2011-04-07 Keihin Corp 弁装置
CN103994231A (zh) * 2014-04-30 2014-08-20 吴俊云 一种电子膨胀阀
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
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

Also Published As

Publication number Publication date
CN117515193A (zh) 2024-02-06

Similar Documents

Publication Publication Date Title
WO2022127264A1 (zh) 电子膨胀阀以及制冷设备
WO2012048581A1 (zh) 一种电动阀
CN112128409B (zh) 流体管理组件
KR200496160Y1 (ko) 전자 팽창 밸브
CN108626414B (zh) 车用空调系统电子膨胀阀
CN213954361U (zh) 电子膨胀阀以及制冷设备
WO2022127265A1 (zh) 阀针组件、电子膨胀阀和制冷设备
WO2024021815A1 (zh) 电子膨胀阀以及制冷设备
CN116625032A (zh) 电子膨胀阀和制冷设备
CN113883284B (zh) 电动阀以及冷冻循环系统
US20200124327A1 (en) Electronic expansion valve
CN107356024A (zh) 电子膨胀阀
JP2024010029A (ja) 電動弁及び冷凍サイクルシステム
WO2023142223A1 (zh) 阀针组件、电子膨胀阀和制冷设备
CN107289138B (zh) 电子膨胀阀
JP2023035812A (ja) 電子膨張弁及びその空調ユニット
KR20230032849A (ko) 전자 팽창 밸브 및 이의 냉동 시스템
CN110230722B (zh) 一种电子膨胀阀
JP7089041B2 (ja) 電子膨張弁
WO2024021770A1 (zh) 电子膨胀阀及制冷设备
WO2024021821A1 (zh) 电子膨胀阀及制冷设备
WO2024021828A1 (zh) 电子膨胀阀及制冷设备
WO2023142225A1 (zh) 电子膨胀阀和制冷设备
WO2023274394A1 (zh) 一种电动阀
CN220320327U (zh) 一种电子流量计

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: 23845029

Country of ref document: EP

Kind code of ref document: A1