WO2024021828A1 - 电子膨胀阀及制冷设备 - Google Patents

电子膨胀阀及制冷设备 Download PDF

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Publication number
WO2024021828A1
WO2024021828A1 PCT/CN2023/096668 CN2023096668W WO2024021828A1 WO 2024021828 A1 WO2024021828 A1 WO 2024021828A1 CN 2023096668 W CN2023096668 W CN 2023096668W WO 2024021828 A1 WO2024021828 A1 WO 2024021828A1
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WO
WIPO (PCT)
Prior art keywords
valve
guide sleeve
electronic expansion
seat
port
Prior art date
Application number
PCT/CN2023/096668
Other languages
English (en)
French (fr)
Inventor
杨茂
陈超
曾庆军
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 WO2024021828A1 publication Critical patent/WO2024021828A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • 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
    • 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
    • F16K3/316—Guiding of the slide
    • 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
    • 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 technical field of fluid control components, and in particular to an electronic expansion valve and refrigeration equipment.
  • an electronic expansion valve is an important component in the refrigeration system. It mainly plays the role of throttling, reducing pressure and regulating flow.
  • an electronic expansion valve includes a valve seat assembly, a nut assembly, a valve core assembly, a magnetic rotor assembly and other components.
  • the valve seat assembly has a valve port. When the electronic expansion valve works, it is driven by an energized coil surrounding the valve housing.
  • the magnetic rotor assembly rotates, thereby driving the valve needle assembly to move axially, thereby controlling the opening or closing of the valve port, thereby achieving the functions of throttling, reducing pressure and regulating flow.
  • the connecting seat and guide sleeve in the electronic expansion valve adopt a split structure design
  • the connecting seat and the guide sleeve need to be fixedly connected together. Since the medium pressure will exert a downward force on the guide sleeve when the electronic expansion valve is working, It may cause the connection between the connecting seat and the guide sleeve to be unstable, and the guide sleeve to slide downward, thus affecting the use of the electronic expansion valve.
  • the main purpose of this application is to propose an electronic expansion valve aimed at improving the stability of the connection between the connecting seat and the guide sleeve.
  • the electronic expansion valve includes a valve seat, a connecting seat, a guide sleeve and a support structure; a port is formed on one end of the valve seat, and a port is formed in the valve seat.
  • a limiting portion is provided on the inner wall of the valve seat, the lower end surface of the guide sleeve is in contact with the limiting portion, and the limiting portion forms the support structure.
  • a first stepped hole is provided in the valve seat, and the first stepped hole divides the valve chamber into a first valve chamber and a second valve chamber, and the first stepped hole is connected to the first stepped hole.
  • the first valve chamber and the second valve chamber are both connected; the inner diameter of the first step hole is larger than the inner diameter of the second valve chamber, the lower end surface of the first step hole forms the support structure, and the guide The sleeve is inserted into the first step hole, and the lower end surface of the guide sleeve is in contact with the support structure.
  • the port is connected to the first valve chamber, the inner diameter of the port is greater than the inner diameter of the first valve chamber, the lower end surface of the port forms a first contact surface, and the connecting seat It includes a positioning section and an extension section.
  • the positioning section is connected to the extension section.
  • the outer diameter of the positioning section is greater than the outer diameter of the extension section.
  • the lower end surface of the positioning section is connected to the first contact surface. The distance between them is D, 3 mm>D>0.1 mm.
  • the electronic expansion valve further includes a sealing structure
  • the sealing structure includes a first sealing member, a first groove is formed on the outer wall of the guide sleeve, and the first sealing member is disposed on the The first groove is in contact with the inner wall surface of the valve seat; or the inner wall surface of the valve seat is provided with a first groove, and the first sealing member is disposed in the first groove and is in contact with the inner wall surface of the valve seat.
  • the outer wall surfaces of the guide sleeve are in contact with each other.
  • the sealing structure further includes a second sealing member, the outer wall surface of the connecting seat is provided with a second groove, the second sealing member is provided in the second groove, and the second sealing member is disposed in the second groove.
  • the sealing member is in contact with the inner wall surface of the valve seat; or, the inner wall surface of the valve seat is provided with a second groove, the sealing member is disposed in the second groove, and the second sealing member is in contact with the inner wall surface of the valve seat.
  • the outer wall surface of the connecting seat is in contact with each other.
  • connection base has a first through hole and a second through hole connected to the first through hole
  • guide sleeve includes a mounting portion, and the mounting portion extends into the second through hole. And connected with the connecting base.
  • the connecting seat and the guide sleeve are welded.
  • the connecting seat is made of stainless steel
  • the guide sleeve is made of aluminum alloy
  • the connecting seat is riveted to the guide sleeve.
  • the electronic expansion valve further includes a valve port seat and a valve needle assembly.
  • the valve port seat is provided on the guide sleeve.
  • the valve port seat has a valve port.
  • the first valve chamber is connected to the second valve needle assembly.
  • the valve chamber can be communicated through the valve port;
  • the valve needle assembly is movably provided on the guide sleeve, the valve needle assembly includes a valve stem and a valve head connected to the valve stem, the valve head is movable is inserted into the valve port, and the valve stem can reciprocate along the axial direction of the valve port to drive the valve head to open or close the valve port.
  • the valve seat further has a first interface and a second interface
  • the guide sleeve has a medium flow chamber
  • the first interface is connected to the first valve chamber
  • the first valve chamber is connected to the first valve chamber.
  • the medium flow chamber is connected
  • the valve port is connected with the second valve chamber
  • the second valve chamber is connected with the second interface; when the valve head opens the valve port, the first The interface is connected to the second interface.
  • the electronic expansion valve further includes a nut assembly and a rotor assembly.
  • the nut assembly is threadedly connected to the valve needle assembly.
  • the rotor assembly is sleeved on the valve needle assembly and can drive the valve needle assembly.
  • the valve needle assembly rotates relative to the nut assembly, so that the valve stem reciprocates along the axial direction of the valve port to drive the valve head to open or close the valve port.
  • the electronic expansion valve includes a valve seat, a connecting seat, a guide sleeve and a support structure; a port is formed on one end of the valve seat, and a valve cavity connected to the port is formed in the valve seat; the connecting seat is provided on the The port; the guide sleeve is provided in the valve cavity, and the guide sleeve is connected to the connecting seat; the support structure is provided on the valve seat and abuts with the lower end surface of the guide sleeve for Support the guide sleeve.
  • the refrigeration equipment is an air conditioner, a freezer, a refrigerator or a heat pump water heater.
  • Figure 1 is a schematic structural diagram of an embodiment of the electronic expansion valve of the present application.
  • Figure 2 is an enlarged view of point A in Figure 1;
  • Figure 3 is an enlarged view of B in Figure 1;
  • Figure 4 is a schematic structural diagram of the valve seat of the electronic expansion valve in Figure 1;
  • Figure 5 is a schematic structural diagram of the connecting seat of the electronic expansion valve in Figure 1;
  • FIG. 6 is an exploded view of part of the structure of the electronic expansion valve in FIG. 1 .
  • the electronic expansion valve is an important component in the refrigeration system and mainly plays the role of throttling, reducing pressure and regulating flow.
  • Existing electronic expansion valves include a valve seat, a nut assembly and a valve needle assembly threaded with the nut assembly.
  • the magnetic rotor assembly is used to drive the valve needle assembly to produce axial movement to adjust the opening of the valve port, thereby achieving medium flow control.
  • the connecting seat and the guide sleeve are arranged separately, and a support structure is provided at the lower end of the guide sleeve.
  • the guide sleeve is supported through the support structure to prevent the medium pressure from causing damage to the guide sleeve when the electronic expansion valve is working.
  • the downward force causes the connection between the connecting seat and the guide sleeve to be unstable, causing the guide sleeve to slide downward.
  • the electronic expansion valve of the present application can be applied to an air conditioning system.
  • the fluid medium flowing through the electronic expansion valve is the refrigerant used for heat and cold exchange in the air conditioning system.
  • the electronic expansion valve is installed at the evaporator inlet of the air conditioning system.
  • the electronic expansion valve serves as the dividing element between the high-pressure side and the low-pressure side of the air-conditioning system, throttling and depressurizing the high-pressure liquid refrigerant from the liquid storage dryer and other devices, thereby Adjust and control the amount of liquid refrigerant entering the evaporator so that the amount of liquid refrigerant can adapt to the requirements of the external refrigeration load.
  • the electronic expansion valve is applied to other types of refrigeration equipment.
  • the fluid medium flowing through the electronic expansion valve can also be other fluid media besides refrigerant, as long as the electronic expansion valve can achieve throttling and pressure reduction of the fluid medium. That’s it, there are no specific restrictions on this.
  • the electronic expansion valve 10 includes a valve seat 100, a connecting seat 200, a guide sleeve 300 and a support structure 400; a port 110 is formed on one end of the valve seat 100 , a valve chamber 120 connected to the port 110 is formed in the valve seat 100; the connecting seat 200 is provided at the port 110; the guide sleeve 300 is provided at the valve cavity 120, and the guide sleeve 300 Connected to the connecting seat 200; the support structure 400 is provided on the valve seat 100 and contacts the lower end surface of the guide sleeve 300 to support the guide sleeve 300.
  • the valve seat 100 also has a valve cavity 120, and the valve cavity 120 is connected with the port 110.
  • a first interface 140 and a second interface 150 can also be provided on the valve seat 100.
  • the first interface 140 and the second interface 150 is used to connect pipes.
  • the first interface 140 and the second interface 150 can be connected through the valve cavity 120, so that the fluid medium can enter from the first interface 140 and flow out from the second interface 150 through the valve cavity 120; conversely, the fluid medium can also It enters from the second interface 150 and flows out from the first interface 140 through the valve chamber 120. That is, the fluid medium can flow into the valve chamber 120 from any one of the first interface 140 or the second interface 150 and flow out from the other port. .
  • the fluid medium flows into the valve chamber 120 from the first interface 140 and flows out from the second interface 150 .
  • valve seat 100 of the electronic expansion valve 10 can be a valve seat 100 specially used to install the guide sleeve 300, the connecting seat 200 and other electronic expansion valve components to form a separate electronic expansion valve 10, or,
  • the valve seat 100 can also be the valve seat 100 of an integrated module.
  • the valve seat 100 of the integrated module can be installed with electronic expansion valve components such as the guide sleeve 300 and the connecting seat 200 of the present application, as well as other structural components.
  • the valve seat 100 can be made of stainless steel, aluminum, or other materials, and there is no specific limitation on this.
  • the shape of the valve seat 100 may be cylindrical, square or other special shapes.
  • a port 110 is formed on one end of the valve seat 100.
  • the port 110 is specifically a stepped hole.
  • the connecting seat 200 is fixedly installed in the stepped hole. To facilitate later disassembly and assembly, the connecting seat 200 can be connected to the stepped hole. inner wall threaded connection.
  • the guide sleeve 300 is disposed in the valve chamber 120 and is located below the connecting seat 200.
  • the guide sleeve 300 is connected to the connecting seat 200.
  • the guide sleeve 300 can be fixedly connected to the connecting seat 200, or can be fixedly connected to the connecting seat 200.
  • the connecting base 200 can be movablely connected in many ways, such as riveting, welding, clamping, etc., or it can be connected through a connecting structure, or sealed through a sealing structure, and there is no specific restriction on this.
  • the diameter of the connecting seat 200 in this application is larger, and the diameter of the guide sleeve 300 is smaller. The two are set up separately, and the guide sleeve 300 and the connecting seat 200 are connected together.
  • the guide sleeve 300 and the connecting seat 200 are separately processed.
  • the machining allowance is small and the processing time is short, which can improve production efficiency; at the same time, the machining allowance is small, which can further reduce the loss of raw materials and reduce costs; further, when pairing the guide sleeve 300 and the connecting seat 200
  • the degree of wear on the cutting tools is also small, and there is no need to replace the cutting tools frequently, which increases the service life of the cutting tools and further reduces the cost.
  • the support structure 400 is disposed in the valve seat 100, specifically on the inner wall of the valve chamber 120.
  • the support structure 400 abuts the lower end surface of the guide sleeve 300, and is mainly used to support the guide sleeve 300 and provide an upward direction for the support of the guide sleeve 300. At the same time, it also limits the downward movement of the guide sleeve 300, so that when the electronic expansion valve 10 is working, the medium pressure exerts a downward force on the guide sleeve 300. This force can be offset by the support structure 400 to improve the connection seat.
  • the stability of the connection between 200 and the guide sleeve 300 prevents the guide sleeve 300 from sliding downward.
  • the support structure 400 can be a blocking ring extending inwardly from the inner wall of the valve chamber 120 , or a stopper extending inwardly from the inner wall of the valve chamber 120 .
  • the valve cavities 120 may be arranged at intervals in the circumferential direction, and may also have other similar structures, as long as they can support the guide sleeve 300, and there is no specific limitation on this.
  • the electronic expansion valve 10 of the present application includes a valve seat 100, a connecting seat 200, a guide sleeve 300 and a support structure 400; a port 110 is formed at one end of the valve seat 100, and a port 110 is formed in the valve seat 100 to communicate with the port 110.
  • the valve chamber 120; the connecting seat 200 is provided at the port 110; the guide sleeve 300 is provided at the valve chamber 120, and the guide sleeve 300 is connected to the connecting seat 200; the support structure 400 is provided at the valve chamber 120.
  • the valve seat 100 is in contact with the lower end surface of the guide sleeve 300 to support the guide sleeve 300 .
  • the downward force exerted by the medium pressure on the guide sleeve 300 can be offset by the support structure 400 to improve the stability of the connection between the connecting seat 200 and the guide sleeve 300 and prevent the guide sleeve 300 from sliding downward.
  • a limiting portion 410 is provided on the inner wall of the valve seat 100, and the lower end surface of the guide sleeve 300 is in contact with the limiting portion 410.
  • the limiting portion 410 forms the supporting structure 400 .
  • a limiting portion 410 can be provided on the inner wall of the valve chamber 120 and located below the guide sleeve 300 .
  • the limiting portion 410 contacts the lower end surface of the guide sleeve 300 and can support the guide sleeve 300 .
  • the support structure 400 can be a blocking ring extending inwardly from the inner wall of the valve chamber 120 , or a stopper extending inwardly from the inner wall of the valve chamber 120 .
  • the valve cavities 120 may be arranged at intervals in the circumferential direction, and may also have other similar structures, as long as they can support the guide sleeve 300, and there is no specific limitation on this.
  • a first stepped hole 130 is provided in the valve seat 100.
  • the first stepped hole 130 divides the valve chamber 120 into a first valve chamber 121 and a second valve chamber. 122.
  • the first stepped hole 130 is connected to both the first valve chamber 121 and the second valve chamber 122; the inner diameter of the first stepped hole 130 is larger than the inner diameter of the second valve chamber 122, and the
  • the lower end surface of the first step hole 130 forms the support structure 400 , the guide sleeve 300 is inserted in the first step hole 130 , and the lower end surface of the guide sleeve 300 abuts the support structure 400 .
  • the bottom surface of the first step hole 130 serves as the support structure 400 for supporting the guide sleeve 300, without having to separately provide the support structure 400 in the valve cavity 120, which can improve efficiency.
  • the support structure 400 is integrally formed with the valve seat 100.
  • the support structure 400 has high strength, can better support the guide sleeve 300, and can withstand the direction of the guide sleeve 300 caused by greater medium pressure. The lower acting force further improves the stability of the connection between the connecting seat 200 and the guide sleeve 300.
  • the port 110 is connected to the first valve chamber 121, and the inner diameter of the port 110 is greater than the inner diameter of the first valve chamber 121.
  • the lower end surface forms a first contact surface 111.
  • the connection seat 200 includes a positioning section 210 and an extension section 220.
  • the positioning section 210 is connected to the extension section 220.
  • the outer diameter of the positioning section 210 is larger than the extension section.
  • the outer diameter of 220, the distance between the lower end surface of the positioning section 210 and the first contact surface 111 is D, 3 mm>D>0.1 mm.
  • the connecting seat 200 and the guide sleeve 300 are usually assembled together first, and then they are pressed into the valve seat 100 together.
  • the first contact surface 111 will limit the lower end of the positioning section 210.
  • the positioning section 210 has external threads, and the inner wall surface of the port 110 has internal threads. The positioning section 210 is threadedly connected to the inner wall surface of the port 110 .
  • the support structure 400 cannot contact the guide sleeve. 300 plays a supporting role, so when the electronic expansion valve 10 is working, the support structure 400 cannot offset the downward force exerted by the medium pressure on the guide sleeve 300. Therefore, the lower end surface of the positioning section 210 reaches the third There is a certain distance D between the contact surfaces 111.
  • the distance D is not more than 3 mm and not less than 0.1 mm, so as to improve the stability of the connection between the connecting seat 200 and the guide sleeve 300 and prevent the guide sleeve 300 from downwards. slide. If D is greater than 3 mm, it is not conducive to the miniaturization and lightweight design of the electronic expansion valve 10; if D is less than 0.1 mm, the processing accuracy of the guide sleeve 300 and the mounting seat is required to be high, and interference is likely to occur after assembly.
  • the electronic expansion valve 10 further includes a sealing structure 500 .
  • the sealing structure 500 includes a first seal 510 .
  • the outer wall of the guide sleeve 300 is provided with a first sealing member 510 .
  • the first seal 510 is disposed in the first groove 310 and contacts the inner wall surface of the valve seat 100; or, the inner wall surface of the valve seat 100 is provided with a first groove.
  • the first seal 510 is disposed in the first groove 310 and contacts the outer wall surface of the guide sleeve 300.
  • the first seal 510 can be a rubber ring.
  • the rubber ring is elastic.
  • the rubber ring is placed in the first groove 310.
  • the first groove 310 can play a better role in sealing the first seal 510. Limiting effect.
  • the first groove 310 is opened on the outer wall surface of the lower end of the guide sleeve 300 , and the position of the first groove 310 is lower than the first interface 140 .
  • the first sealing member 510 can be in contact with the inner wall surface of the valve seat 100 or the outer wall surface of the guide sleeve 300.
  • the first sealing member 510 is assembled using an interference fit.
  • the first sealing member 510 will Deformed and tightly contacted with the inner wall surface of the valve seat 100 or the outer wall surface of the guide sleeve 300, so that the guide sleeve 300 and the valve seat 100 are sealingly connected, thereby improving the sealing performance of the connection between the guide sleeve 300 and the valve seat 100. , prevent the fluid medium from flowing out through the connection between the guide sleeve 300 and the valve seat 100, and avoid internal leakage of the electronic expansion valve 10 during use.
  • the outer wall surface of the connecting seat 200 is provided with a second groove 230
  • the second sealing member 520 is provided in the second groove 230
  • the connection between the second sealing member 520 and the valve seat 100 is The inner wall surface abuts; or, the inner wall surface of the valve seat 100 is provided with a second groove 230, the sealing member is provided in the second groove 230, the second sealing member 520 and the connecting seat 200
  • the outer wall surface is in contact.
  • the second sealing member 520 can be a rubber ring.
  • the rubber ring is elastic.
  • the rubber ring is placed in the second groove 230.
  • the second groove 230 can play a better role in sealing the second sealing member 520.
  • the position of the second groove 230 is higher than the position of the first groove 310 and is located above the first interface 140 .
  • the second sealing member 520 can be in contact with the inner wall surface of the valve seat 100.
  • the second sealing member 520 is assembled using an interference fit. After the assembly is completed, the second sealing member 520 will deform and tightly contact the valve seat 100.
  • the inner wall surfaces of the valve seat 200 are in contact with each other, so that the connection seat 200 and the valve seat 100 are sealingly connected.
  • the second groove 230 can also be opened on the inner wall surface of the valve seat 100 so that the second seal 520 contacts the outer wall surface of the connecting seat 200. There is no specific limit on the position of the second groove 230.
  • connection base 200 has a first through hole 240 and a second through hole 250 connected with the first through hole 240 .
  • the guide sleeve 300 includes a mounting portion. 320. The mounting portion 320 extends into the second through hole 250 and is connected to the connection base 200.
  • the mounting portion 320 extends into the second through hole 250 , the outer wall surface of the mounting portion 320 is in contact with the inner wall surface of the second through hole 250 , and part of the outer surface of the mounting portion 320 is in contact with the connecting seat 200 The lower end is in contact with each other to increase the contact area between the guide sleeve 300 and the connecting seat 200, thereby improving the stability of the connection between the connecting seat 200 and the guide sleeve 300.
  • connection between the connecting seat 200 and the guide sleeve 300 there are many connection methods.
  • the connecting seat 200 and the guide sleeve 300 are welded.
  • the guide sleeve 300 and the connecting seat 200 are both made of metal, the guide sleeve 300 and the connecting seat 200 can be welded together and connected by welding, which further enhances the connection between the guide sleeve 300 and the connecting seat 200 .
  • the stability of the 200-seat connection is very low-seat connection.
  • the connecting seat 200 is made of stainless steel
  • the guide sleeve 300 is made of aluminum alloy
  • the connecting seat 200 and the guide sleeve 300 are riveted.
  • the guide sleeve 300 and the connecting seat 200 can also be connected by riveting. After riveting, the deformation of the connection between the guide sleeve 300 and the connecting seat 200 is small, and the riveting method has low environmental requirements. The riveted parts are not easy to loosen.
  • the connection base 200 and the guide sleeve 300 are usually assembled together by assembly equipment, and then welded together by welding equipment. The whole process requires two machines. equipment to achieve.
  • the guide sleeve 300 and the connecting seat 200 are connected by riveting, which requires fewer processes and can be completed with only one piece of equipment and takes less time, which can improve the production efficiency of the electronic expansion valve 10 .
  • the guide sleeve 300 and the connecting seat 200 are connected by riveting.
  • the connecting seat 200 is made of stainless steel, and the guide sleeve 300 can be made of aluminum alloy.
  • the alloy material has the advantages of light weight, high strength, good sealing performance, corrosion resistance, and relatively low cost. Using the guide sleeve 300 made of aluminum alloy can achieve lightweighting and further reduce the production cost of the electronic expansion valve 10 .
  • guide sleeve 300 and the connecting seat 200 can also be connected through snapping or other connection methods, and there is no specific limitation on this.
  • the electronic expansion valve 10 further includes a valve seat 600 and a valve needle assembly 700 .
  • the valve seat 600 is provided on the guide sleeve 300 .
  • the valve seat 600 has Valve port 610, the first valve chamber 121 and the second valve chamber 122 can be connected through the valve port 610;
  • the valve needle assembly 700 is movably provided on the guide sleeve 300, the valve needle assembly 700 includes a valve stem 710 and a valve head 720 connected to the valve stem 710.
  • the valve head 720 is movably inserted in the valve port 610.
  • the valve stem 710 is along the axial direction of the valve port 610.
  • the valve seat 100 also has a first interface 140 and a second interface 150.
  • the guide sleeve 300 has a medium flow chamber 330.
  • the first interface 140 is connected with the first valve chamber 121.
  • the first valve chamber 121 is connected to the medium flow chamber 330, the valve port 610 is connected to the second valve chamber 122, and the second valve chamber 122 is connected to the second interface 150; when the valve head 720 opens the When the valve port 610 is opened, the first interface 140 and the second interface 150 are connected.
  • the guide sleeve 300 has a medium flow chamber 330 and an installation port 340 .
  • the medium flow chamber 330 is connected to the first valve chamber 121 , and the first valve chamber 121 is connected to the first interface 140 .
  • the valve seat 600 is installed at the installation port 340 and is sealingly connected to the guide sleeve 300.
  • the valve seat 600 has a valve port 610.
  • the valve port 610 is connected to the second valve chamber 122, and the second valve chamber 122 is connected to the second interface 150.
  • the medium flow chamber 330 may be connected with the valve port 610 .
  • the fluid medium When the electronic expansion valve 10 is working, the fluid medium will first enter the first valve chamber 121 from the first interface 140, then enter the medium flow chamber 330 through the first valve chamber 121, and then exit from the valve in the medium flow chamber 330.
  • the port 610 flows out to the second valve chamber 122 and finally flows out through the second interface 150 .
  • the first interface 140 and the second interface 150 are used to connect pipelines. It should be noted that the fluid medium can flow in from any one of the first port 140 or the second port 150 and flow out from the other port, and there is no specific limitation on this.
  • the valve needle assembly 700 includes a valve stem 710 and a valve head 720 connected to the valve stem 710.
  • the valve port 610 is connected to the second interface 150, and the valve port 610 is used to supply the valve head 720 of the valve needle assembly 700. Insertion, thereby blocking the fluid medium in the electronic expansion valve 10 from flowing out through the valve port 610 .
  • the valve head 720 of the valve needle assembly 700 closes the valve port 610, that is, when the medium flow chamber 330 and the valve port 610 are disconnected, the electronic expansion valve 10 is closed. At this time, the fluid medium cannot flow from the first interface 140 to the second interface 150.
  • valve head 720 of the valve needle assembly 700 releases the seal on the valve port 610, that is, when the medium flow chamber 330 and the valve port 610 are connected to each other, the electronic expansion valve 10 is opened. At this time, the fluid medium can flow from the first interface 140 to the third port. Two interfaces 150. Wherein, the inner wall of the valve port 610 forms a flow adjustment surface, and the flow adjustment surface extends obliquely downward. The shape of the valve head 720 is cylindrical. When the valve head 720 contacts the flow adjustment surface, the valve head 720 The valve port 610 is completely closed.
  • valve head 720 moves upward, there is a gap between the valve head 720 and the flow adjustment surface, and the gap will continue to increase as the valve head 720 moves upward, and the fluid medium will flow through the gap.
  • the valve head 720 controls the flow rate of the fluid medium in the electronic expansion valve 10 by controlling the size of the gap between the valve head 720 and the flow adjustment surface.
  • the electronic expansion valve 10 further includes a nut assembly 800 and a rotor assembly 900.
  • the nut assembly 800 is threadedly connected to the valve needle assembly 700.
  • the rotor assembly 900 is sleeved on
  • the valve needle assembly 700 can drive the valve needle assembly 700 to rotate relative to the nut assembly 800, so that the valve stem 710 reciprocates along the axial direction of the valve port 610 to drive the valve head. 720 opens or closes the valve port 610.
  • the nut assembly 800 is fixedly connected to the connecting seat 200.
  • the nut assembly 800 has a nut.
  • the nut is threadedly connected to the valve stem 710 of the valve needle assembly 700.
  • the rotor assembly 900 is connected to the valve stem 710 of the valve needle assembly 700.
  • the valve stem 710 is connected. Since the nut and the valve stem 710 form a threaded matching relationship of the nut and the valve stem 710, the rotation of the rotor assembly 900 can drive the valve stem 710 to rotate, thereby causing the valve stem 710 to telescopically move along the axis of the valve port 610.
  • the valve stem 710 drives the valve head 720 to move, thereby opening or closing the valve port 610 .
  • the working principle of the electronic expansion valve 10 is as follows:
  • the stator assembly When the stator assembly is energized, a magnetic field is generated.
  • the rotor made of magnetic material rotates under the drive of the magnetic field.
  • the rotor is fixedly connected to the valve stem 710.
  • the rotation of the rotor drives the valve stem 710 to rotate.
  • a nut valve stem 710 is formed between the valve stem 710 and the nut.
  • the nut assembly 800 is fixedly installed on the connecting seat 200, so the rotation of the valve stem 710 relative to the nut will drive the valve stem 710 to telescopically move relative to the nut, thereby realizing the stator assembly driving the rotor assembly 900 to move, and the rotor assembly 900 driving the valve.
  • the working process of needle assembly 700 movement The working process of needle assembly 700 movement.
  • the valve head 720 moves toward the valve port 610 driven by the valve stem 710.
  • the valve head 720 closes the valve port 610, that is, when the medium flow chamber 330 and the valve port 610 are disconnected, the electronic expansion valve 10 is closed.
  • the fluid medium It cannot flow from the first interface 140 to the second interface 150;
  • the valve head 720 releases the seal on the valve port 610, that is, when the medium flow chamber 330 and the valve port 610 are connected to each other, the electronic expansion valve 10 opens, and at this time the fluid medium can flow from The first interface 140 flows to the second interface 150 . Since the opening diameter of the valve port 610 in the electronic expansion valve 10 is relatively small, the flow rate of the fluid medium is reduced, thereby realizing the process of throttling and depressurizing the fluid medium by the electronic expansion valve 10 .
  • the electronic expansion valve 10 further includes a valve housing 1000.
  • the valve housing 1000 is a cylindrical structure with one end open.
  • the valve housing 1000 and the connecting seat 200 Connect and cover the valve needle assembly 700 , the nut assembly 800 and the rotor assembly 900 .
  • the valve housing 1000 is generally cylindrical in design, and the valve housing 1000 and the connecting seat 200 can be fixed by welding.
  • a receiving cavity is formed inside the valve housing 1000.
  • the receiving cavity also houses a rotor assembly 900.
  • the rotor assembly 900 is connected to the valve stem 710.
  • the valve stem 710 is driven by the rotor assembly 900.
  • the valve head 720 is rotated downward to open or close the valve port 610 .
  • This application also proposes a refrigeration equipment, which includes the above-mentioned electronic expansion valve 10 .
  • the specific structure of the electronic expansion valve 10 refers to the above-mentioned embodiments. Since this refrigeration equipment adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be discussed here. Let’s go over them one by one.
  • the refrigeration equipment is an air conditioner, a freezer, a refrigerator or a heat pump water heater, etc.

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Abstract

一种电子膨胀阀，包括阀座（100）、连接座（200）、导向套（300）以及支撑结构（400），阀座一端形成有端口（110），阀座内形成有与端口连通的阀腔（120），连接座设置于端口，导向套设置于阀腔，导向套与连接座连接；支撑结构（400）设置于阀座，并与导向套的下端面抵接，用以支撑导向套。还公开了一种包括该电子膨胀阀的制冷设备。

Description

电子膨胀阀及制冷设备
本申请要求于2022年7月27日申请的、申请号为202210894849.2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部件技术领域，特别涉及一种电子膨胀阀及制冷设备。
 背景技术
电子膨胀阀是制冷系统中的一个重要部件，主要起着节流降压和调节流量的作用。相关技术中，电子膨胀阀包括阀座组件、螺母组件、阀芯组件和磁转子组件等部件，阀座组件开设有阀口，当电子膨胀阀工作时，通过环绕于阀壳体外的通电线圈驱动磁转子组件旋转，从而带动阀针组件轴向移动，进而控制阀口的开或关，以此来实现节流降压和调节流量的作用。
当电子膨胀阀中的连接座和导向套采用分体结构设计时，需要将连接座和导向套固定连接在一起，由于电子膨胀阀在工作时介质压强会对导向套产生向下的作用力，可能会导致连接座和导向套之间的连接不稳定，导向套向下滑落，从而影响电子膨胀阀的使用。
 技术问题
本申请的主要目的是提出一种电子膨胀阀，旨在提高连接座与导向套之间连接的稳固性。
 技术解决方案
为实现上述目的，本申请提出的电子膨胀阀，所述电子膨胀阀包括阀座、连接座、导向套以及支撑结构；所述阀座一端形成有端口，所述阀座内形成有与所述端口连通的阀腔；所述连接座设置于所述端口；所述导向套设置于所述阀腔，所述导向套与所述连接座连接；所述支撑结构设置于所述阀座，并与所述导向套的下端面抵接，用以支撑所述导向套。
在一实施例中，所述阀座的内壁上设置有限位部，所述导向套的下端面与所述限位部相抵接，所述限位部形成所述支撑结构。
在一实施例中，所述阀座内设置有第一台阶孔，所述第一台阶孔将所述阀腔分为第一阀腔和第二阀腔，所述第一台阶孔与所述第一阀腔和所述第二阀腔均连通；所述第一台阶孔的内径大于所述第二阀腔的内径，所述第一台阶孔的下端面形成所述支撑结构，所述导向套插设在所述第一台阶孔中，所述导向套的下端面与所述支撑结构抵接。
在一实施例中，所述端口与所述第一阀腔连通，所述端口的内径大于所述第一阀腔的内径，所述端口的下端面形成第一抵接面，所述连接座包括定位段和延伸段，所述定位段和所述延伸段连接，所述定位段的外径大于所述延伸段的外径，所述定位段的下端面到所述第一抵接面之间的距离为D，3 mm＞D＞0.1 mm。
在一实施例中，所述电子膨胀阀还包括密封结构，所述密封结构包括第一密封件，所述导向套的外壁面开设有第一凹槽，所述第一密封件设置于所述第一凹槽，并与所述阀座的内壁面抵接；或者，所述阀座的内壁面开设有第一凹槽，所述第一密封件设置于所述第一凹槽，并与所述导向套的外壁面抵接。
在一实施例中，所述密封结构还包括第二密封件，所述连接座的外壁面设置有第二凹槽，所述第二密封件设置于所述第二凹槽，所述第二密封件与所述阀座的内壁面抵接；或者，所述阀座的内壁面设置有第二凹槽，所述密封件设置于所述第二凹槽，所述第二密封件与所述连接座的外壁面抵接。
在一实施例中，所述连接座具有第一通孔和与所述第一通孔连通的第二通孔，所述导向套包括安装部，所述安装部伸入所述第二通孔并与所述连接座连接。
在一实施例中，所述连接座与所述导向套焊接。
在一实施例中，所述连接座的材质为不锈钢，所述导向套的材质为铝合金，所述连接座与所述导向套铆接。
在一实施例中，所述电子膨胀阀还包括阀口座和阀针组件，所述阀口座设置于所述导向套，所述阀口座具有阀口，所述第一阀腔与所述第二阀腔可通过所述阀口连通；所述阀针组件可移动地设置于所述导向套，所述阀针组件包括阀杆和与所述阀杆连接的阀头，所述阀头可移动地插设于所述阀口内，所述阀杆沿所述阀口的轴向可往复运动，以带动所述阀头打开或关闭所述阀口。
在一实施例中，所述阀座还具有第一接口和第二接口，所述导向套具有介质流通腔，所述第一接口和所述第一阀腔连通，所述第一阀腔和所述介质流通腔连通，所述阀口与所述第二阀腔连通，所述第二阀腔和所述第二接口连通；当所述阀头打开所述阀口时，所述第一接口和所述第二接口连通。
在一实施例中，所述电子膨胀阀还包括螺母组件和转子组件，所述螺母组件与所述阀针组件螺纹连接，所述转子组件套设于所述阀针组件，并可带动所述阀针组件相对于所述螺母组件转动，以使得所述阀杆沿所述阀口的轴向往复运动，以带动所述阀头打开或关闭所述阀口。
本申请还提出一种制冷设备，所述制冷设备包括所述电子膨胀阀。所述电子膨胀阀包括阀座、连接座、导向套以及支撑结构；所述阀座一端形成有端口，所述阀座内形成有与所述端口连通的阀腔；所述连接座设置于所述端口；所述导向套设置于所述阀腔，所述导向套与所述连接座连接；所述支撑结构设置于所述阀座，并与所述导向套的下端面抵接，用以支撑所述导向套。
在一实施例中，所述制冷设备为空调器、冷冻机、冰箱或热泵热水器。
 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一实施例的结构示意图；
图2为图1中A处的放大图；
图3为图1中B处的放大图；
图4为图1中电子膨胀阀的阀座的结构示意图；
图5为图1中电子膨胀阀的连接座的结构示意图；
图6为图1中电子膨胀阀的部分结构的爆炸图。
附图标号说明：
标号 名称 标号 名称
10 电子膨胀阀 310 第一凹槽
100 阀座 320 安装部
110 端口 330 介质流通腔
111 第一抵接面 340 安装口
120 阀腔 400 支撑结构
121 第一阀腔 410 限位部
122 第二阀腔 500 密封结构
130 第一台阶孔 510 第一密封件
140 第一接口 520 第二密封件
150 第二接口 600 阀口座
200 连接座 610 阀口
210 定位段 700 阀针组件
220 延伸段 710 阀杆
230 第二凹槽 720 阀头
240 第一通孔 800 螺母组件
250 第二通孔 900 转子组件
300 导向套 1000 阀壳体
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，若全文中出现的“和/或”的含义为，包括三个并列的方案，以“A和/或B”为例，包括A方案，或B方案，或A和B同时满足的方案。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的实施例，电子膨胀阀是制冷系统中的一个重要部件，主要起着节流降压和调节流量的作用。现有电子膨胀阀包括阀座、螺母组件和与螺母组件螺纹配合的阀针组件，利用磁转子组件驱动阀针组件产生轴向运动，调节阀口的开度，从而实现介质的流通控制。本申请的电子膨胀阀，将连接座和导向套分体设置，并在导向套的下端设置支撑结构，通过该支撑结构对导向套进行支撑，防止电子膨胀阀在工作时介质压强对导向套产生向下的作用力，导致连接座和导向套之间的连接不稳定，从而导致导向套向下滑落。
本申请的电子膨胀阀，可以应用到空调系统中，流经电子膨胀阀的流体介质为空调系统中用以进行冷热交换的冷媒。此时，电子膨胀阀安装于空调系统的蒸发器入口处，电子膨胀阀作为空调系统高压侧与低压侧的分界元件，将来自贮液干燥器等器件中的高压液态冷媒节流降压，从而调节和控制进入蒸发器中的液态冷媒的剂量，使得液态冷媒的剂量能够适应外界制冷负载的要求。或者，电子膨胀阀应用到其他类型的制冷设备中，流经电子膨胀阀的流体介质还可以是除冷媒之外的其他流体介质，只要电子膨胀阀能够实现对该种流体介质的节流降压即可，对此不作具体限制。
请参阅图1至图6，在本申请的一实施例中，所述电子膨胀阀10包括阀座100、连接座200、导向套300以及支撑结构400；所述阀座100一端形成有端口110，所述阀座100内形成有与所述端口110连通的阀腔120；所述连接座200设置于所述端口110；所述导向套300设置于所述阀腔120，所述导向套300与所述连接座200连接；所述支撑结构400设置于所述阀座100，并与所述导向套300的下端面抵接，用以支撑所述导向套300。所述阀座100内还具有阀腔120，所述阀腔120与端口110连通，在阀座100上还可以设置第一接口140和第二接口150，所述第一接口140和第二接口150用来连接管道，第一接口140和第二接口150可通过阀腔120连通，使得流体介质可以从第一接口140进入，经过阀腔120从第二接口150流出；反之，流体介质也可以从第二接口150进入，经过阀腔120从第一接口140流出，即流体介质可从第一接口140或第二接口150中的任意一个口流入到阀腔120中，并从另一个口流出。在一实施例中，流体介质从第一接口140流入到阀腔120中，并从第二接口150流出。
需要强调的是，所述电子膨胀阀10的阀座100可以是专门用来安装导向套300、连接座200等电子膨胀阀组件的阀座100，以组成一个单独的电子膨胀阀10，或者，该阀座100还可以是集成化模块的阀座100，所述集成化模块的阀座100上可以安装本申请的导向套300、连接座200等电子膨胀阀组件，以及其他结构的组件。所述阀座100可以由不锈钢材质加工制造，也可以由铝材质加工制造，或者采用其他材质加工制造，对此不作具体限制。所述阀座100的形状可以呈圆柱形、方形或其他异形设置。所述阀座100的一端形成有端口110，所述端口110具体为一台阶孔，连接座200固定安装在台阶孔内，为便于后期的拆装，所述连接座200可以和所述台阶孔的内壁螺纹连接。
导向套300设置于所述阀腔120，并位于连接座200的下方，所述导向套300与所述连接座200连接，其中，导向套300可以与连接座200可以是固定连接，也可以与连接座200活动连接，其连接方式有很多种，可以是铆接、焊接、卡接等，也可以是通过连接结构连接，或者通过密封结构密封连接，对此不作具体限制。本申请的连接座200的直径较大，导向套300的直径较小，将两者分体设置，并将导向套300和连接座200连接在一起，在对导向套300和连接座200分别进行加工时，加工余量小，且加工的时间短，可以提高生产效率；同时，加工余量小，也可以进一步的减少原材料的损耗，降低成本；进一步地，在对导向套300和连接座200分别进行加工时，对刀具的磨损程度也较小，不需要经常更换刀具，提高了刀具的使用寿命，进一步降低了成本。
支撑结构400设置在阀座100内，具体设置在阀腔120的内壁面上，该支撑结构400与导向套300的下端面抵接，主要用于支撑导向套300，为支撑导向套300提供向上的力，同时，还限制了导向套300的下滑，使得电子膨胀阀10在工作时，介质压强对导向套300产生向下的作用力，通过支撑结构400可以抵消该作用力，以提高连接座200和导向套300之间的连接的稳固性，防止导向套300向下滑落。至于所述支撑结构400的类型，所述支撑结构400可以是自阀腔120的内壁面向内延伸的挡环，也可以是自阀腔120的内壁面向内延伸的挡块，所述挡块沿阀腔120的周向间隔排布，还可以是其他类似的结构，只要可以对导向套300起到支撑的作用均可，对此不作具体限制。
本申请的电子膨胀阀10包括阀座100、连接座200、导向套300以及支撑结构400；所述阀座100一端形成有端口110，所述阀座100内形成有与所述端口110连通的阀腔120；所述连接座200设置于所述端口110；所述导向套300设置于所述阀腔120，所述导向套300与所述连接座200连接；所述支撑结构400设置于所述阀座100，并与所述导向套300的下端面抵接，用以支撑所述导向套300。据此，可以通过支撑结构400抵消介质压强对导向套300产生的向下的作用力，以提高连接座200和导向套300之间的连接的稳固性，防止导向套300向下滑落。
请参阅图1、图2和图4，在一实施例中，所述阀座100的内壁上设置有限位部410，所述导向套300的下端面与所述限位部410相抵接，所述限位部410形成所述支撑结构400。具体地，阀腔120的内壁上，且位于导向套300的下方可以设置限位部410，该限位部410与导向套300的下端面抵接，可以对导向套300起到支撑的作用。至于所述支撑结构400的类型，所述支撑结构400可以是自阀腔120的内壁面向内延伸的挡环，也可以是自阀腔120的内壁面向内延伸的挡块，所述挡块沿阀腔120的周向间隔排布，还可以是其他类似的结构，只要可以对导向套300起到支撑的作用均可，对此不作具体限制。
请参阅图4，在一实施例中，所述阀座100内设置有第一台阶孔130，所述第一台阶孔130将所述阀腔120分为第一阀腔121和第二阀腔122，所述第一台阶孔130与所述第一阀腔121和所述第二阀腔122均连通；所述第一台阶孔130的内径大于所述第二阀腔122的内径，所述第一台阶孔130的下端面形成所述支撑结构400，所述导向套300插设在所述第一台阶孔130中，所述导向套300的下端面与所述支撑结构400抵接。具体地，通过在阀座100内设置有第一台阶孔130，使得第一台阶孔130的底面作为支撑导向套300的支撑结构400，而不必单独在阀腔120内设置支撑结构400，可以提高效率。同时，该支撑结构400与阀座100一体成型，支撑结构400的强度较高，可以更好地对导向套300起到支撑的作用，且可以承受更大的介质压强对导向套300产生的向下的作用力，进一步提高了连接座200和导向套300之间的连接的稳固性。
请参阅图3和图4，在一实施例中，所述端口110与所述第一阀腔121连通，所述端口110的内径大于所述第一阀腔121的内径，所述端口110的下端面形成第一抵接面111，所述连接座200包括定位段210和延伸段220，所述定位段210和所述延伸段220连接，所述定位段210的外径大于所述延伸段220的外径，所述定位段210的下端面到所述第一抵接面111之间的距离为D，3 mm＞D＞0.1 mm。
具体地，在对电子膨胀阀10内的部件装配时，通常是先将连接座200和导向套300装配在一起，然后共同压入阀座100中。当连接座200安装进阀座100中后，第一抵接面111会对定位段210的下端限位，同时，定位段210具有外螺纹，所述端口110的内壁面具有内螺纹，所述定位段210和所述端口110的内壁面螺纹连接。考虑到零件在生产时会存在误差，同时为防止导向套300安装到阀座100中后，导向套300的下端面无法与支撑结构400的上端面抵接，因此使得支撑结构400无法对导向套300起到支撑的作用，从而在电子膨胀阀10在工作时，支撑结构400无法抵消介质压强对导向套300产生的向下的作用力，因此，所述定位段210的下端面到所述第一抵接面111之间存在一定的距离D，距离为D不大于3 mm，且不小于0.1 mm，以提高连接座200和导向套300之间的连接的稳固性，防止导向套300向下滑落。若D大于3 mm，则不利于电子膨胀阀10的小型化和轻量化设计；若D小于0.1 mm，则对导向套300和安装座的加工精度要求较高，装配后容易发生干涉。
请参阅图1至图3，在一实施例中，所述电子膨胀阀10还包括密封结构500，所述密封结构500包括第一密封件510，所述导向套300的外壁面开设有第一凹槽310，所述第一密封件510设置于所述第一凹槽310，并与所述阀座100的内壁面抵接；或者，所述阀座100的内壁面开设有第一凹槽310，所述第一密封件510设置于所述第一凹槽310，并与所述导向套300的外壁面抵接。
具体说来，所述第一密封件510可以是橡胶圈，橡胶圈具有弹性，将橡胶圈放置在第一凹槽310中，第一凹槽310可以对第一密封件510起到较好的限位作用。所述第一凹槽310开设在所述导向套300的下端的外壁面上，第一凹槽310的位置低于第一接口140。第一密封件510可以与阀座100的内壁面抵接或与导向套300的外壁面抵接，其第一密封件510采用过盈配合进行装配，在装配完成后，第一密封件510会发生形变，紧紧地与阀座100的内壁面抵接或与导向套300的外壁面抵接，使得导向套300与阀座100密封连接，提高导向套300与阀座100连接处的密封性，防止流体介质通过导向套300与阀座100的连接处流出，可以避免电子膨胀阀10在使用时产生内泄漏。
进一步地，所述连接座200的外壁面设置有第二凹槽230，所述第二密封件520设置于所述第二凹槽230，所述第二密封件520与所述阀座100的内壁面抵接；或者，所述阀座100的内壁面设置有第二凹槽230，所述密封件设置于所述第二凹槽230，所述第二密封件520与所述连接座200的外壁面抵接。
具体说来，所述第二密封件520可以是橡胶圈，橡胶圈具有弹性，将橡胶圈放置在第二凹槽230中，第二凹槽230可以对第二密封件520起到较好的限位作用。所述第二凹槽230的位置高于所述第一凹槽310的位置，且位于第一接口140的上方。第二密封件520可以与阀座100的内壁面抵接，其第二密封件520采用过盈配合进行装配，在装配完成后，第二密封件520会发生形变，紧紧地与阀座100的内壁面抵接，使得连接座200与阀座100密封连接。当然，所述第二凹槽230也可以开设在阀座100的内壁面，使得第二密封件520与连接座200的外壁面抵接，对第二凹槽230的开设位置不作具体限制。
请参阅图1至图6，在一实施例中，所述连接座200具有第一通孔240和与所述第一通孔240连通的第二通孔250，所述导向套300包括安装部320，所述安装部320伸入所述第二通孔250并与所述连接座200连接。具体说来，所述安装部320伸入所述第二通孔250中，安装部320的外壁面与第二通孔250的内壁面抵接，安装部320还有部分外表面与连接座200的下端抵接，通过增大导向套300与连接座200的接触面积，以提高连接座200与导向套300连接的稳固性。
对于连接座200和导向套300的连接，可以有多种连接方式。在一实施例中，所述连接座200与所述导向套300焊接。具体地，所述导向套300和所述连接座200均采用金属材质制成时，可以将导向套300和连接座200焊接在一起，通过焊接的方式进行连接，进一步增强了导向套300与连接座200连接的稳固性。
在另一实施例中，所述连接座200的材质为不锈钢，所述导向套300的材质为铝合金，所述连接座200与所述导向套300铆接。具体说来，所述导向套300和所述连接座200还可以通过铆接的方式进行连接，铆接后其导向套300与连接座200的连接处的变形小，且铆接方式对环境的要求低，铆接后的的零部件不易松动。将所述导向套300与所述连接座200焊接时，其通常是先通过装配设备将连接座200和导向套300装配在一起，然后在通过焊接设备将其焊接在一起，整个过程需要两台设备来实现。相比于焊接的方式，将导向套300和连接座200采用铆接的方式进行连接，工序少，只通过一台设备即可完成，且用时较短，可以提高电子膨胀阀10的生产效率。
进一步地，将所述导向套300与所述连接座200通过铆接的方式进行连接，此时所述连接座200的材质为不锈钢材质，所述导向套300的材质可以设置为铝合金材质，铝合金材质具有质量轻，强度高的优点，其密闭性能好，且耐腐蚀，成本也相对较低。使用铝合金材质的导向套300，可以实现轻量化，且还可以进一步降低电子膨胀阀10的生产成本。
当然，所述导向套300和所述连接座200还可以通过卡接或其他连接方式进行连接，对此不作具体限制。
请参阅图1至图6，在一实施例中，所述电子膨胀阀10还包括阀口座600和阀针组件700，所述阀口座600设置于所述导向套300，所述阀口座600具有阀口610，所述第一阀腔121与所述第二阀腔122可通过所述阀口610连通；所述阀针组件700可移动地设置于所述导向套300，所述阀针组件700包括阀杆710和与所述阀杆710连接的阀头720，所述阀头720可移动地插设于所述阀口610内，所述阀杆710沿所述阀口610的轴向可往复运动，以带动所述阀头720打开或关闭所述阀口610。所述阀座100还具有第一接口140和第二接口150，所述导向套300具有介质流通腔330，所述第一接口140和所述第一阀腔121连通，所述第一阀腔121和所述介质流通腔330连通，所述阀口610与所述第二阀腔122连通，所述第二阀腔122和所述第二接口150连通；当所述阀头720打开所述阀口610时，所述第一接口140和所述第二接口150连通。
具体地，所述导向套300内具有介质流通腔330和安装口340，该介质流通腔330与第一阀腔121连通，第一阀腔121与第一接口140连通。阀口座600安装在安装口340处，并与导向套300密封连接，该阀口座600具有阀口610，阀口610与第二阀腔122连通，第二阀腔122与第二接口150连通，所述介质流通腔330可以与所述阀口610连通。当电子膨胀阀10工作时，流体介质会先从第一接口140进入到第一阀腔121中，然后通过第一阀腔121进入到介质流通腔330中，然后在介质流通腔330中从阀口610流出至第二阀腔122，并最后通过第二接口150流出。所述第一接口140和第二接口150用来连接管道。需要说明的是，流体介质可从第一接口140或第二接口150中的任意一个口流入，并从另一个口流出，对此不作具体限制。
请参阅图1，所述阀针组件700包括阀杆710和与阀杆710连接的阀头720，阀口610与第二接口150连通，阀口610用以供阀针组件700的阀头720插入，从而阻断电子膨胀阀10内的流体介质通过阀口610流出。当阀针组件700的阀头720封闭阀口610，也即介质流通腔330和阀口610断开连通时，电子膨胀阀10关闭，此时流体介质不能从第一接口140流向第二接口150；当阀针组件700的阀头720解除对阀口610的密封，也即介质流通腔330和阀口610相互连通时，电子膨胀阀10打开，此时流体介质可以从第一接口140流向第二接口150。其中，所述阀口610的内壁形成流量调节面，所述流量调节面向下倾斜延伸，所述阀头720的形状呈圆柱形设置，当阀头720与流量调节面抵接时，阀头720完全封闭阀口610，当阀头720向上移动时，阀头720与流量调节面之间存在间隙，且该间隙随着阀头720的上移会不断加大，流体介质会从该间隙流过阀口610并流出，所述阀头720通过控制阀头720与流量调节面之间间隙的大小，以此来起到对电子膨胀阀10中的流体介质的流量大小的控制作用。
请参阅图1，在一实施例中，所述电子膨胀阀10还包括螺母组件800和转子组件900，所述螺母组件800与所述阀针组件700螺纹连接，所述转子组件900套设于所述阀针组件700，并可带动所述阀针组件700相对于所述螺母组件800转动，以使得所述阀杆710沿所述阀口610的轴向往复运动，以带动所述阀头720打开或关闭所述阀口610。
具体地，所述螺母组件800与所述连接座200固定连接，所述螺母组件800具有螺母，所述螺母与所述阀针组件700的阀杆710螺纹连接，所述转子组件900与所述阀杆710连接，由于螺母与阀杆710之间形成螺母阀杆710的螺纹配合关系，转子组件900转动可以带动阀杆710转动，进而使得阀杆710沿阀口610的轴线方向做伸缩运动，实现阀杆710带动阀头720移动的运动过程，以此来打开或关闭所述阀口610。
所述电子膨胀阀10的工作原理具体如下：
定子组件通电后产生磁场，由磁性材料制成的转子在磁场的驱动下转动，转子与阀杆710固定连接，转子的转动带动阀杆710转动，阀杆710与螺母之间形成螺母阀杆710的螺纹配合关系，螺母组件800固定设置在连接座200上，因此阀杆710相对螺母的转动会驱使阀杆710相对螺母伸缩运动，从而实现定子组件驱动转子组件900运动，转子组件900再驱动阀针组件700运动的工作过程。
阀头720在阀杆710的驱动下朝向阀口610运动，当阀头720封闭阀口610，也即介质流通腔330和阀口610断开连通时，电子膨胀阀10关闭，此时流体介质不能从第一接口140流向第二接口150；当阀头720解除对阀口610的密封，也即介质流通腔330和阀口610相互连通时，电子膨胀阀10打开，此时流体介质可以从第一接口140流向第二接口150。由于电子膨胀阀10中阀口610的开设口径相对较小，流体介质的流通量降低，从而实现电子膨胀阀10对流体介质的节流降压过程。
请参阅图1，在一实施例中，所述电子膨胀阀10还包括阀壳体1000，所述阀壳体1000为一端开口的筒状结构，所述阀壳体1000与所述连接座200连接，并罩盖所述阀针组件700、所述螺母组件800以及所述转子组件900。具体地，所述阀壳体1000大致呈圆柱形设计，阀壳体1000与连接座200可以通过焊接的方式进行固定。阀壳体1000的内部形成有容纳腔，容纳腔内除螺母组件800和阀针组件700外，还容纳有转子组件900，转子组件900与阀杆710连接，阀杆710在转子组件900的带动下旋转，从而带动阀头720移动以打开或关闭所述阀口610。流体介质在电子膨胀阀10工作时，可以流入容纳腔中。
本申请还提出一种制冷设备，所述制冷设备包括上述电子膨胀阀10。所述电子膨胀阀10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。其中，所述制冷设备为空调器、冷冻机、冰箱或热泵热水器等。
以上所述仅为本申请的可选实施例，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 (14)

  1. 一种电子膨胀阀，其中，所述电子膨胀阀包括：
    阀座，一端形成有端口，所述阀座内形成有与所述端口连通的阀腔；
    连接座，设置于所述端口；
    导向套，设置于所述阀腔，所述导向套与所述连接座连接；以及
    支撑结构，设置于所述阀座，并与所述导向套的下端面抵接，用以支撑所述导向套。
  2. 如权利要求1所述的电子膨胀阀，其中，所述阀座的内壁上设置有限位部，所述导向套的下端面与所述限位部相抵接，所述限位部形成所述支撑结构。
  3. 如权利要求1或2所述的电子膨胀阀，其中，所述阀座内设置有第一台阶孔，所述第一台阶孔将所述阀腔分为第一阀腔和第二阀腔，所述第一台阶孔与所述第一阀腔和所述第二阀腔均连通；所述第一台阶孔的内径大于所述第二阀腔的内径，所述第一台阶孔的下端面形成所述支撑结构，所述导向套插设在所述第一台阶孔中，所述导向套的下端面与所述支撑结构抵接。
  4. 如权利要求3所述的电子膨胀阀，其中，所述端口与所述第一阀腔连通，所述端口的内径大于所述第一阀腔的内径，所述端口的下端面形成第一抵接面，所述连接座包括定位段和延伸段，所述定位段和所述延伸段连接，所述定位段的外径大于所述延伸段的外径，所述定位段的下端面到所述第一抵接面之间的距离为D，3 mm＞D＞0.1 mm。
  5. 如权利要求1至4中任意一项所述的电子膨胀阀，其中，所述电子膨胀阀还包括密封结构，所述密封结构包括第一密封件，所述导向套的外壁面开设有第一凹槽，所述第一密封件设置于所述第一凹槽，并与所述阀座的内壁面抵接；或者，所述阀座的内壁面开设有第一凹槽，所述第一密封件设置于所述第一凹槽，并与所述导向套的外壁面抵接。
  6. 如权利要求5所述的电子膨胀阀，其中，所述密封结构还包括第二密封件，所述连接座的外壁面设置有第二凹槽，所述第二密封件设置于所述第二凹槽，所述第二密封件与所述阀座的内壁面抵接；或者，所述阀座的内壁面设置有第二凹槽，所述密封件设置于所述第二凹槽，所述第二密封件与所述连接座的外壁面抵接。
  7. 如权利要求1至6中任意一项所述的电子膨胀阀，其中，所述连接座具有第一通孔和与所述第一通孔连通的第二通孔，所述导向套包括安装部，所述安装部伸入所述第二通孔并与所述连接座连接。
  8. 如权利要求1至7中任意一项所述的电子膨胀阀，其中，所述连接座与所述导向套焊接。
  9. 如权利要求1至7中任意一项所述的电子膨胀阀，其中，所述连接座的材质为不锈钢，所述导向套的材质为铝合金，所述连接座与所述导向套铆接。
  10. 如权利要求3至9中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口座和阀针组件，所述阀口座设置于所述导向套，所述阀口座具有阀口，所述第一阀腔与所述第二阀腔可通过所述阀口连通；所述阀针组件可移动地设置于所述导向套，所述阀针组件包括阀杆和与所述阀杆连接的阀头，所述阀头可移动地插设于所述阀口内，所述阀杆沿所述阀口的轴向可往复运动，以带动所述阀头打开或关闭所述阀口。
  11. 如权利要求10所述的电子膨胀阀，其中，所述阀座还具有第一接口和第二接口，所述导向套具有介质流通腔，所述第一接口和所述第一阀腔连通，所述第一阀腔和所述介质流通腔连通，所述阀口与所述第二阀腔连通，所述第二阀腔和所述第二接口连通；当所述阀头打开所述阀口时，所述第一接口和所述第二接口连通。
  12. 如权利要求10或11所述的电子膨胀阀，其中，所述电子膨胀阀还包括螺母组件和转子组件，所述螺母组件与所述阀针组件螺纹连接，所述转子组件套设于所述阀针组件，并可带动所述阀针组件相对于所述螺母组件转动，以使得所述阀杆沿所述阀口的轴向往复运动，以带动所述阀头打开或关闭所述阀口。
  13. 一种制冷设备，其中，所述制冷设备包括如权利要求1至12中任意一项所述的电子膨胀阀。
  14. 如权利要求13所述的制冷设备，其中，所述制冷设备为空调器、冷冻机、冰箱或热泵热水器。
PCT/CN2023/096668 2022-07-27 2023-05-26 电子膨胀阀及制冷设备 WO2024021828A1 (zh)

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CN217784254U (zh) * 2022-07-27 2022-11-11 广东威灵电机制造有限公司 电子膨胀阀及制冷设备

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JP2013249889A (ja) * 2012-05-31 2013-12-12 Pacific Ind Co Ltd 流量制御弁
CN104279342A (zh) * 2013-07-12 2015-01-14 浙江盾安禾田金属有限公司 一种电子膨胀阀
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