WO2024022000A1 - 电子膨胀阀组件、电子膨胀阀及制冷设备 - Google Patents

电子膨胀阀组件、电子膨胀阀及制冷设备 Download PDF

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Publication number
WO2024022000A1
WO2024022000A1 PCT/CN2023/104106 CN2023104106W WO2024022000A1 WO 2024022000 A1 WO2024022000 A1 WO 2024022000A1 CN 2023104106 W CN2023104106 W CN 2023104106W WO 2024022000 A1 WO2024022000 A1 WO 2024022000A1
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WO
WIPO (PCT)
Prior art keywords
electronic expansion
valve
guide sleeve
expansion valve
seat
Prior art date
Application number
PCT/CN2023/104106
Other languages
English (en)
French (fr)
Inventor
杨茂
任纬峰
黄龙华
Original Assignee
广东威灵电机制造有限公司
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Filing date
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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 WO2024022000A1 publication Critical patent/WO2024022000A1/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22Gate 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
    • F16K3/24Gate 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
    • F16K3/26Gate 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
    • F16K3/267Combination of a sliding valve and a lift valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/04Construction of housing; Use of materials therefor of sliding valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/04Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22Gate 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
    • F16K3/24Gate 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
    • F16K3/26Gate 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30Details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30Details
    • F16K3/314Forms or constructions of slides; Attachment of the slide to the spindle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30Details
    • F16K3/316Guiding of the slide
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30Details
    • F16K3/34Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047Actuating 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/44Mechanical actuating means
    • F16K31/50Mechanical actuating means with screw-spindle or internally threaded actuating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/44Mechanical actuating means
    • F16K31/50Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F16K31/508Mechanical 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • F25B41/34Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F25B41/35Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors

Definitions

  • the present application relates to the technical field of fluid control components, and in particular to an electronic expansion valve assembly, 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 needle assembly, a magnetic rotor assembly and other components.
  • the valve seat assembly has a valve port. When the electronic expansion valve is working, 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.
  • valve seat and the guide sleeve in the existing electronic expansion valve are connected, the valve seat and the guide sleeve are usually assembled together through assembly equipment, and then welded together using welding equipment.
  • the whole process requires two pieces of equipment. To achieve this, the process is cumbersome and takes a long time to weld the valve seat and guide sleeve, resulting in low production efficiency.
  • the main purpose of this application is to propose an electronic expansion valve assembly, aiming to solve at least one of the technical problems existing in the prior art.
  • the electronic expansion valve assembly includes a guide sleeve and a valve seat; the valve seat is provided on the guide sleeve, and the valve seat is riveted to the guide sleeve.
  • the valve port seat has a valve port, and the inner wall of the valve port forms a flow adjustment surface, and the flow adjustment surface extends obliquely downward.
  • the guide sleeve has a first installation hole
  • the valve seat is provided in the first installation hole
  • a rivet portion protrudes downward at the lower end of the guide sleeve, and the rivet portion deforms by itself. It is in contact with the lower end surface of the valve seat.
  • the guide sleeve further has a second mounting hole connected to the first mounting hole, and the inner diameter of the first mounting hole is greater than the inner diameter of the second mounting hole.
  • the first mounting hole The upper end surface of the valve seat forms a limiting part, the valve seat includes a first mounting part and a second mounting part, the first mounting part is connected to the second mounting part, and the upper end surface of the first mounting part is connected to the The limiting part is in contact.
  • the difference between the inner diameter of the riveted part and the inner diameter of the first mounting hole is D, and 2 mm ⁇ D ⁇ 0.005 mm.
  • the difference between the inner diameter of the riveted part and the inner diameter of the first mounting hole is D, 0.5 mm ⁇ D ⁇ 0.005 mm.
  • the electronic expansion valve assembly further includes a gasket installed in the first mounting hole and in contact with the lower end surface of the valve seat, and the gasket is in contact with the guide Set riveted.
  • the gasket and the valve port seat are integrally formed.
  • the lower end surface of the gasket protrudes from the lower end surface of the guide sleeve.
  • the valve seat is made of non-metallic material.
  • the electronic expansion valve further includes a sealing structure located between the inner wall surface of the guide sleeve and the outer wall surface of the valve seat, and the guide sleeve and the valve seat pass through The sealing structure is sealed and connected.
  • the sealing structure includes a plurality of convex ribs provided on the outer wall surface of the valve seat, and a plurality of limiting grooves are provided on the inner wall surface of the guide sleeve.
  • the convex ribs are disposed on the limiting groove. bit slot.
  • the sealing structure includes a sealing member, the outer wall surface of the valve port seat is provided with a groove, the sealing member is disposed in the groove and abuts against the inner wall surface of the guide sleeve; or , the inner wall surface of the guide sleeve is provided with a groove, the sealing member is arranged in the groove, and is in contact with the outer wall surface of the valve seat.
  • the electronic expansion valve includes a valve seat and the electronic expansion valve assembly.
  • the electronic expansion valve assembly is installed on the valve seat.
  • the electronic expansion valve assembly includes a guide sleeve and a valve seat; the valve seat is provided on the guide sleeve, the valve seat is riveted to the guide sleeve, the valve seat has a valve port, and the inner wall of the valve port forms The flow adjustment surface extends downward and inclined.
  • the electronic expansion valve includes a valve seat and the electronic expansion valve assembly, and the electronic expansion valve assembly is installed on the valve seat.
  • the electronic expansion valve assembly includes a guide sleeve and a valve seat; the valve seat is provided on the guide sleeve, the valve seat is riveted to the guide sleeve, the valve seat has a valve port, and the inner wall of the valve port forms The flow adjustment surface extends downward and inclined.
  • 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 a schematic structural diagram of the valve seat of the electronic expansion valve in Figure 1;
  • Figure 3 is an exploded schematic diagram of part of the structure of the electronic expansion valve in Figure 1;
  • Figure 4 is an enlarged view of point A in Figure 3;
  • Figure 5 is an assembly schematic diagram of part of the structure of the electronic expansion valve in Figure 3;
  • Figure 6 is a schematic structural diagram of the guide sleeve and valve seat in Figure 5 before they are riveted;
  • Figure 7 is an enlarged view of B in Figure 6;
  • Figure 8 is a schematic structural diagram of the guide sleeve and valve seat in Figure 5 after they are riveted.
  • Valve seat 100 valve seat 410 valve port 110 port 411 Flow regulating surface 120 Valve cavity 420 First installation department 130 first interface 430 Second installation department 140 Second interface 500 Gasket 200 Connecting seat 600 Sealing structure/ribs 300 Guide sleeve 700 Valve needle assembly 310 First mounting hole 710 Stem 311 Limiting part 720 Valve head 320 Second mounting hole 800 nut assembly 330 riveting part 900 Rotor assembly 340 Media flow chamber 1000 valve housing
  • 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 valve seat is installed in the guide sleeve, and the valve seat and the guide sleeve are connected by riveting to improve the assembly efficiency between the two.
  • the electronic expansion valve assembly of the present application can be applied to the air conditioning system of automobiles.
  • 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 assembly includes a guide sleeve 300 and a valve seat 400; the valve seat 400 is provided on the guide sleeve 300, and the valve seat 400 Riveted to the guide sleeve 300, the valve seat 400 has a valve port 410.
  • the inner wall of the valve port 410 forms a flow adjustment surface 411, and the flow adjustment surface 411 extends downwardly.
  • the electronic expansion valve assembly is used to be installed on the valve seat 100 of the electronic expansion valve 10.
  • 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.
  • the valve seat 100 can be specially used to install the electronic expansion valve
  • the valve seat 100 of the assembly is used to form a separate electronic expansion valve 10, or the valve seat 100 can also be the valve seat 100 of an integrated module, and the electronic expansion valve of the present application can be installed on the valve seat 100 of the integrated module. valve components, and 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 electronic expansion valve 10 may also include a connecting seat 200.
  • the connecting seat 200 is connected to the guide sleeve 300, and the connecting seat 200 is fixedly installed.
  • the connecting seat 200 can be threadedly connected to the inner wall of the stepped hole.
  • the connecting seat 200 and the guide sleeve 300 can be integrally formed or can be provided separately, and there is no specific limitation on this.
  • the valve seat 100 also has a valve chamber 120, which is connected with the port 110.
  • a first interface 130 and a second interface 140 can also be provided on the valve seat 100.
  • the first interface 130 and the second interface 140 is used to connect pipes.
  • the first interface 130 and the second interface 140 can be connected through the valve cavity 120, so that the fluid medium can enter from the first interface 130 and flow out from the second interface 140 through the valve cavity 120; conversely, the fluid medium can also It enters from the second interface 140 and flows out from the first interface 130 through the valve chamber 120. That is, the fluid medium can flow into the valve chamber 120 from any one of the first interface 130 or the second interface 140 and flow out from the other port. .
  • the fluid medium flows into the valve chamber 120 from the first interface 130 and flows out from the second interface 140 .
  • the electronic expansion valve assembly also includes a valve needle assembly 700.
  • the valve needle assembly 700 is disposed in the guide sleeve 300 and can move along the axial direction of the guide sleeve 300.
  • the guide sleeve 300 is mainly a valve needle.
  • the movement of the assembly 700 serves as a guide, and the valve needle assembly 700 can open or close the valve port 410 to control the circulation and flow rate of the fluid medium in the electronic expansion valve 10 .
  • the valve needle assembly 700 includes a valve stem 710 and a valve head 720 connected to the valve stem 710.
  • the valve port 410 is connected to the second interface 140, and the valve port 410 is used for the valve head 720 of the valve needle assembly 700 to be inserted, so that Block the fluid medium in the electronic expansion valve 10 from being discharged to the outside through the valve port 410 .
  • the valve head 720 of the valve needle assembly 700 closes the valve port 410, that is, when the medium flow chamber 340 and the valve port 410 are disconnected, the electronic expansion valve 10 is closed. At this time, the fluid medium cannot flow from the first interface 130 to the second interface 140. ;
  • the valve head 720 of the valve needle assembly 700 releases the seal on the valve port 410, that is, when the medium flow chamber 340 and the valve port 410 are connected to each other, the electronic expansion valve 10 is opened.
  • the fluid medium can flow from the first interface 130 to the third port.
  • the inner wall of the valve port 410 forms a flow adjustment surface 411.
  • the flow adjustment surface 411 extends downward and obliquely.
  • the valve head 720 is arranged in a cylindrical shape. When the valve head 720 contacts the flow adjustment surface 411, , the valve head 720 completely closes the valve port 410. When the valve head 720 moves upward, there is a gap between the valve head 720 and the flow adjustment surface 411, and the gap will continue to increase as the valve head 720 moves upward, and the fluid medium will The gap flows through the valve port 410 and flows out.
  • 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 411 . control effect.
  • the valve seat 400 is installed in the guide sleeve 300 and is riveted with the guide sleeve 300. Specifically, the valve seat 400 and the guide sleeve 300 are connected by riveting. After riveting, the valve seat 400 and the guide sleeve are riveted. The deformation of the 300 joint is small, and the riveting method has low environmental requirements, and the parts after riveting are not easy to loosen. It should be emphasized that the valve seat 400 can be an independent valve seat 400, and its material can be a hard material or a soft material, and the independent valve seat 400 is riveted to the guide sleeve 300; or, The valve seat 400 may include multiple valve seats, and the multiple valve seats 400 are connected or abutted with each other through connecting structures.
  • the valve seat 400 includes a first valve seat and a second valve seat
  • the first valve seat 400 may include a first valve seat and a second valve seat.
  • the port seat is located above the second valve seat, and the lower surface of the first valve seat is in contact with the upper surface of the second valve seat.
  • the guide sleeve 300 is riveted to the lower surface of the second valve seat.
  • the material of the first valve port seat and the material of the second valve port seat can be set to the same material, or can be set to different materials, and there is no specific limitation on this.
  • the type of the hard material it can be hard materials such as ABS, HIPS, PP, PC, etc., or it can be metal or alloy materials, etc.
  • the type of the soft material can be silica gel, rubber, etc., which are not mentioned here. Set specific restrictions.
  • the valve seat 400 is usually pressed into the guide sleeve 300 through assembly equipment, so that the valve seat 400 and the guide sleeve 300 are assembled together, and then the valve seat 400 and the guide sleeve 300 are assembled together through the welding equipment. Welded together, the entire process requires two pieces of equipment to achieve.
  • the valve seat 400 and the guide sleeve 300 are connected by riveting, which requires fewer steps 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 assembly.
  • the valve seat 400 and the guide sleeve 300 can also be connected by welding, snapping or other connection methods, and there is no specific limitation on this.
  • valve seat 400 and the guide sleeve 300 are connected by riveting.
  • the material of the valve seat 400 can be made of non-metallic materials, such as rubber or plastic materials, which reduces production costs and is made of non-metallic materials.
  • the valve seat 400 is easy to process, which can further improve production efficiency.
  • the valve seat 400 made of non-metallic material is lighter, which can reduce the weight of the electronic expansion valve assembly and achieve lightweight.
  • the valve seat 400 can also be made of other materials, and there is no specific limitation on this.
  • the electronic expansion valve assembly of the present application includes a guide sleeve 300 and a valve seat 400; the valve seat 400 is provided on the guide sleeve 300, the valve seat 400 is riveted to the guide sleeve 300, and the valve seat 400 has a valve port. 410.
  • the inner wall of the valve port 410 forms a flow adjustment surface 411, and the flow adjustment surface 411 extends downwardly.
  • the riveting process is less and takes a short time, which can improve the production efficiency of the electronic expansion valve assembly.
  • the guide sleeve 300 has a first installation hole 310.
  • the valve seat 400 is disposed in the first installation hole 310.
  • the lower end of the guide sleeve 300 protrudes downward.
  • the riveting portion 330 contacts the lower end surface of the valve seat 400 through its own deformation.
  • the valve port seat 400 is installed in the first mounting hole 310 and is sealingly connected with the first mounting hole 310 .
  • the first interface 130 and the second interface 140 can be connected through the valve port 410 .
  • the riveting of the guide sleeve 300 and the valve seat 400 can be achieved by the riveting part 330 contacting the lower end surface of the valve seat 400 through its own deformation. The operation is simple, convenient and quick.
  • the riveting part 330 may be provided at the lower end of the guide sleeve 300 and close to the first through hole.
  • the riveting part 330 is located at the periphery of the first through hole and extends downward from the lower end of the guide sleeve 300, which can reduce the inner wall of the riveting part 330 after the riveting part 330 contacts the lower end surface of the valve seat 400.
  • the gap between the valve seat 400 and the outer wall of the valve seat 400 improves the stability of the riveting.
  • the guide sleeve 300 also has a second mounting hole 320 connected with the first mounting hole 310 .
  • the inner diameter of the first mounting hole 310 is larger than the inner diameter of the second mounting hole 320 .
  • inner diameter, the upper end surface of the first mounting hole 310 forms a limiting portion 311
  • the valve seat 400 includes a first mounting portion 420 and a second mounting portion 430, the first mounting portion 420 and the second mounting portion 430 is connected, and the upper end surface of the first mounting part 420 is in contact with the limiting part 311.
  • the inner diameter of the first mounting hole 310 is larger than the inner diameter of the second mounting hole 320 .
  • the first mounting hole 310 is located below the second mounting hole 320 .
  • a limiting portion 311 is formed at the connection between the first mounting hole 310 and the second mounting hole 320 (ie, the upper end surface of the first mounting hole 310 ), and the limiting portion 311 abuts against the upper end surface of the first mounting portion 420 , the limiting portion 311 can play a role in limiting the valve seat 400 to achieve the fixation of the valve seat 400 and prevent the valve seat 400 from being excessively press-fitted into the guide sleeve 300 .
  • the difference between the inner diameter of the riveting portion 330 and the inner diameter of the first mounting hole 310 is D, and 2 mm ⁇ D ⁇ 0.005 mm.
  • the inner diameter of the riveting part 330 is larger than the inner diameter of the first mounting hole 310.
  • the inner diameter of the riveting part 330 is larger than the inner diameter of the first mounting hole 310, which facilitates the valve seat 400 to be aligned with the first mounting hole 310 and pressed into the guide sleeve 300, which can play a better guiding role in the press-fitting of the valve seat 400.
  • the difference between the inner diameter of the riveted portion 330 and the inner diameter of the first mounting hole 310 is D, 0.5 mm ⁇ D ⁇ 0.005 mm.
  • the electronic expansion valve assembly further includes a gasket 500 .
  • the gasket 500 is installed in the first mounting hole 310 and is connected to the bottom of the valve seat 400 .
  • the end faces are in contact, and the gasket 500 and the guide sleeve 300 are riveted.
  • a gasket 500 can also be provided at the lower end of the valve seat 400, and the upper end of the gasket 500 is in contact with the lower end of the valve seat 400.
  • the riveting portion 330 is in contact with the lower end surface of the gasket 500, and the gasket 500 is in contact with the lower end of the valve seat 400.
  • the piece 500 is riveted to the guide sleeve 300, and the gasket 500 can support the valve seat 400.
  • the gasket 500 should be provided with a through hole corresponding to the valve port 410 of the valve port seat 400 to allow fluid medium to flow.
  • the lower end of the guide sleeve 300 is provided with a riveting portion 330 protruding downward, and the riveting portion 330 contacts the lower end surface of the gasket 500 through its own deformation.
  • the valve seat 400 is first pressed into the guide sleeve 300, and then the gasket 500 is pressed into the guide sleeve 300.
  • the riveting device is used to deform the riveted portion 330 at the lower end of the guide sleeve 300 until it is in contact with the gasket.
  • the lower end surface of the piece 500 is in contact to fix the gasket 500 in the guide sleeve 300.
  • the upper end of the gasket 500 is in contact with the lower end of the valve seat 400.
  • the gasket 500 can support the valve seat 400. .
  • the gasket 500 can be made of metal or non-metal material, and there is no specific limitation on this.
  • the gasket 500 and the valve seat 400 are integrally formed. This design eliminates the trouble of assembling the gasket 500 and the valve seat 400, further improving production efficiency.
  • the gasket 500 and the valve seat 400 are made of the same material, which can be made of plastic material, which is easy to process and can further improve production efficiency. At the same time, the plastic material is lighter in weight, which can reduce the weight of the electronic expansion valve assembly. Achieve lightweight.
  • the lower end surface of the gasket 500 protrudes from the lower end surface of the guide sleeve 300 .
  • the lower end surface of the gasket 500 still protrudes from the lower end surface of the guide sleeve 300, and the riveting part 330 is deformed by the riveting equipment to contact the lower end surface of the gasket 500.
  • the shape of the riveted part 330 is roughly L-shaped after riveting. Part of the riveted part 330 is in contact with the side wall of the gasket 500, and part is in contact with the lower end surface of the gasket 500.
  • the rivet part 330 can wrap the gasket 500 well. , to enhance the stability of the gasket 500 being pressed into the guide sleeve 300 .
  • the electronic expansion valve assembly further includes a sealing structure 600.
  • the sealing structure 600 is located between the inner wall surface of the guide sleeve 300 and the outer wall surface of the valve seat 400. During this time, the guide sleeve 300 and the valve seat 400 are sealingly connected through the sealing structure 600 .
  • the sealing structure 600 may be a separately provided sealing member, or may be a sealing part integrally provided with the guide sleeve 300 or the valve seat 400.
  • the guide sleeve 300 and the valve seat 400 are sealingly connected through the sealing structure 600. , to prevent the fluid medium from flowing out through the connection between the guide sleeve 300 and the valve seat 400, and to avoid internal leakage of the electronic expansion valve assembly during use.
  • the sealing structure 600 includes a plurality of ribs 600 provided on the outer wall of the valve seat 400, and a plurality of limiters are provided on the inner wall of the guide sleeve 300. position groove, and the convex rib 600 is provided in the limiting groove. Specifically, when assembling the valve seat 400, the valve seat 400 is pressed in from the first installation port of the guide sleeve 300, and the plurality of ribs 600 are adapted to snap into the plurality of limiting grooves to secure the guide sleeve.
  • a plurality of the convex ribs 600 can also be provided on the inner wall surface of the guide sleeve 300, and a plurality of limiting grooves are provided on the outer wall surface of the valve seat 400. There is no restriction on the positions of the convex ribs 600 and the limiting grooves.
  • the sealing structure 600 includes a sealing member, a groove is formed on the outer wall of the valve seat 400, the sealing member is disposed in the groove, and It is in contact with the inner wall surface of the guide sleeve 300; or, the inner wall surface of the guide sleeve 300 is provided with a groove, and the sealing member is disposed in the groove and is in contact with the outer wall surface of the valve seat 400.
  • the sealing member may be a rubber ring.
  • the rubber ring is elastic. When the rubber ring is placed in a groove, the groove may play a better limiting role for the sealing member.
  • the seal can be in contact with the inner wall of the guide sleeve 300 or the outer wall of the valve seat 400.
  • the seal is assembled using an interference fit. After the assembly is completed, the seal will deform and tightly contact the guide sleeve.
  • the inner wall surface of 300 or the outer wall surface of the valve seat 400 makes a sealing connection between the valve seat 400 and the guide sleeve 300, improves the sealing performance of the connection between the valve seat 400 and the guide sleeve 300, and prevents the fluid medium from passing through the guide sleeve 300 and the valve seat. 400 connection to avoid internal leakage when the electronic expansion valve assembly is in use.
  • any one of the above embodiments can be selected for implementation, or both methods can be implemented at the same time, and there is no specific limitation here.
  • the electronic expansion valve assembly 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 410 to drive the valve head. 720 opens or closes the valve port 410.
  • 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. Due to the threaded matching relationship between 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 410.
  • the valve stem 710 drives the valve head 720 to move, thereby opening or closing the valve port 410 .
  • 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 410 driven by the valve stem 710.
  • the valve head 720 closes the valve port 410, that is, when the medium flow chamber 340 and the valve port 410 are disconnected, the electronic expansion valve 10 is closed.
  • the fluid medium It cannot flow from the first interface 130 to the second interface 140;
  • the valve head 720 releases the seal on the valve port 410, that is, when the medium flow chamber 340 and the valve port 410 are connected to each other, the electronic expansion valve 10 opens, and at this time the fluid medium can flow from The first interface 130 flows to the second interface 140 . Since the opening diameter of the valve port 410 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 is connected and covers 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 410 .
  • the valve housing 1000 protects the internal components of the electronic expansion valve 10 . When the electronic expansion valve 10 is working, the fluid medium can flow into the accommodation cavity.
  • the electronic expansion valve 10 includes a valve seat 100 and the above-mentioned electronic expansion valve assembly.
  • the electronic expansion valve assembly is installed on the valve seat 100.
  • the specific structure of the electronic expansion valve assembly refers to the above-mentioned embodiments. Since the electronic expansion valve 10 adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments. Herein I won’t go into details one by one.
  • the electronic expansion valve further includes a connecting seat 200 , which is disposed on the valve seat 100 and connected to the guide sleeve 300 .
  • the guide sleeve 300 is disposed in the valve cavity 120 of the valve seat 100 and is located below the connecting seat 200.
  • the guide sleeve 300 is connected to the connecting seat 200, where the guide sleeve 300 can be connected to the connecting seat 200. It is a fixed connection, or it can be movable connected to the connection base 200. There are many ways of connection, such as riveting, welding, clamping, etc., or it can be connected through a connecting structure, or sealed through a sealing structure. There are no specific restrictions on this.
  • the guide sleeve 300 also has a medium flow cavity 340.
  • the medium flow cavity 340 is connected with the valve cavity 120.
  • the valve cavity 120 is connected with the first interface 130.
  • the valve seat 400 is installed in the guide sleeve 300 and is sealingly connected with the guide sleeve 300.
  • the valve seat 400 has a valve port 410 that communicates with the second interface 140 .
  • the medium flow chamber 340 can communicate with the valve port 410 so that the first interface 130 and the second interface 140 are connected.
  • the connecting seat 200 of the present application has a larger diameter, and the guide sleeve 300 has a smaller diameter.
  • the two can be installed separately, and the guide sleeve 300 and the connecting seat 200 can be connected together. Compared with the traditional solution of integrating the guide sleeve 300 and the connecting seat 200, the two are separated. When the guide sleeve 300 and the connecting seat 200 are processed separately, the processing margin is small and the processing time is short.
  • the machining allowance is small, which can further reduce the loss of raw materials and reduce costs; further, when the guide sleeve 300 and the connecting seat 200 are processed separately, the degree of wear on the tool is also small. There is no need to replace the tool frequently, which increases the service life of the tool and further reduces the cost.
  • the guide sleeve 300 is made of aluminum alloy, and the guide sleeve 300 and the connecting seat 200 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. Riveting The final 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 lightweight 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.
  • 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

一种电子膨胀阀组件、电子膨胀阀(10)及制冷设备,其中,电子膨胀阀组件包括导向套(300)以及阀口座(400);阀口座(400)设置于导向套(300),阀口座(400)与导向套(300)铆接,阀口座(400)具有阀口(410),阀口(410)的内壁形成流量调节面(411),流量调节面(411)向下倾斜延伸。

Description

电子膨胀阀组件、电子膨胀阀及制冷设备
本申请要求于2022年7月27日提交中国专利局、申请号为202210894850.5、发明名称为“电子膨胀阀组件、电子膨胀阀及制冷设备”的中国专利申请的优先权,其全部内容通过引用结合在申请中。
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组件、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、阀针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。
技术问题
现有的电子膨胀阀中的阀口座和导向套连接时,通常是先通过装配设备将阀口座和导向套装配在一起,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,过程较繁琐,且对阀口座和导向套焊接时时间较长,从而导致生产效率低。
技术解决方案
本申请的主要目的是提出一种电子膨胀阀组件,旨在至少解决现有技术中存在的技术问题之一。
为实现上述目的,本申请提出的电子膨胀阀组件,所述电子膨胀阀组件包括导向套以及阀口座;所述阀口座设置于所述导向套,所述阀口座与所述导向套铆接,所述阀口座具有阀口,所述阀口的内壁形成流量调节面,所述流量调节面向下倾斜延伸。
在一实施例中,所述导向套具有第一安装孔,所述阀口座设置于所述第一安装孔,所述导向套的下端向下凸设有铆接部,所述铆接部通过自身形变与所述阀口座的下端面抵接。
在一实施例中,所述导向套还具有与所述第一安装孔连通的第二安装孔,所述第一安装孔的内径大于所述第二安装孔的内径,所述第一安装孔的上端面形成限位部,所述阀口座包括第一安装部和第二安装部,所述第一安装部与所述第二安装部连接,所述第一安装部的上端面与所述限位部抵接。
在一实施例中,所述铆接部的内径和所述第一安装孔的内径之间的差值为D,2 mm≥D≥0.005 mm。
在一实施例中,所述铆接部的内径和所述第一安装孔的内径之间的差值为D,0.5 mm≥D≥0.005 mm。
在一实施例中,所述电子膨胀阀组件还包括垫片,所述垫片安装于所述第一安装孔,并与所述阀口座的下端面抵接,所述垫片与所述导向套铆接。
在一实施例中,所述垫片和所述阀口座一体成型。
在一实施例中,所述垫片的下端面凸出于所述导向套的下端面。
在一实施例中,所述阀口座的材质为非金属材质。
在一实施例中,所述电子膨胀阀还包括密封结构,所述密封结构位于所述导向套的内壁面和所述阀口座的外壁面之间,所述导向套和所述阀口座通过所述密封结构密封连接。
在一实施例中,所述密封结构包括设置于所述阀口座的外壁面的多个凸筋,所述导向套的内壁面开设有多个限位槽,所述凸筋设置于所述限位槽。
在一实施例中,所述密封结构包括密封件,所述阀口座的外壁面开设有凹槽,所述密封件设置于所述凹槽,并与所述导向套的内壁面抵接;或者,所述导向套的内壁面开设有凹槽,所述密封件设置于所述凹槽,并与所述阀口座的外壁面抵接。
本申请还提出一种电子膨胀阀,所述电子膨胀阀包括阀座和所述电子膨胀阀组件,所述电子膨胀阀组件安装于所述阀座。所述电子膨胀阀组件包括导向套以及阀口座;所述阀口座设置于所述导向套,所述阀口座与所述导向套铆接,所述阀口座具有阀口,所述阀口的内壁形成流量调节面,所述流量调节面向下倾斜延伸。
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和所述电子膨胀阀组件,所述电子膨胀阀组件安装于所述阀座。所述电子膨胀阀组件包括导向套以及阀口座;所述阀口座设置于所述导向套,所述阀口座与所述导向套铆接,所述阀口座具有阀口,所述阀口的内壁形成流量调节面,所述流量调节面向下倾斜延伸。
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中电子膨胀阀的阀座的结构示意图;
图3为图1中电子膨胀阀的部分结构的爆炸示意图;
图4为图3中A处的放大图;
图5为图3中电子膨胀阀的部分结构的装配示意图;
图6为图5中导向套和阀口座铆接前的结构示意图;
图7为图6中B处的放大图;
图8为图5中导向套和阀口座铆接后的结构示意图。
附图标号说明:
标号 名称 标号 名称
10 电子膨胀阀 400 阀口座
100 阀座 410 阀口
110 端口 411 流量调节面
120 阀腔 420 第一安装部
130 第一接口 430 第二安装部
140 第二接口 500 垫片
200 连接座 600 密封结构/凸筋
300 导向套 700 阀针组件
310 第一安装孔 710 阀杆
311 限位部 720 阀头
320 第二安装孔 800 螺母组件
330 铆接部 900 转子组件
340 介质流通腔 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组件,将阀口座安装在导向套中,阀口座和导向套采用铆接的方式进行连接,以提高两者之间的装配效率。
本申请的电子膨胀阀组件,可以应用到汽车的空调系统中,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5,在本申请的一实施例中,所述电子膨胀阀组件包括导向套300以及阀口座400;所述阀口座400设置于所述导向套300,所述阀口座400与所述导向套300铆接,所述阀口座400具有阀口410,所述阀口410的内壁形成流量调节面411,所述流量调节面411向下倾斜延伸。
示例性地,所述电子膨胀阀组件用于安装在电子膨胀阀10的阀座100上,所述阀座100的一端形成有端口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,需要强调的是,所述阀座100可以是专门用来安装该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,所述电子膨胀阀10还可以包括连接座200,连接座200与导向套300连接,且连接座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。其中,所述连接座200和所述导向套300可以一体成型,也可以分体设置,对此不作具体限制。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130和第二接口140,所述第一接口130和第二接口140用来连接管道,第一接口130和第二接口140可通过阀腔120连通,使得流体介质可以从第一接口130进入,经过阀腔120从第二接口140流出;反之,流体介质也可以从第二接口140进入,经过阀腔120从第一接口130流出,即流体介质可从第一接口130或第二接口140中的任意一个口流入到阀腔120中,并从另一个口流出。在本实施例中,流体介质从第一接口130流入到阀腔120中,并从第二接口140流出。
请参阅图1,所述电子膨胀阀组件还包括阀针组件700,阀针组件700设置在导向套300中,并可以沿所述导向套300的轴向进行移动,导向套300主要为阀针组件700的移动起导向作用,该阀针组件700可以打开或关闭阀口410,以控制流体介质在电子膨胀阀10中的流通以及流量大小。具体来说,阀针组件700包括阀杆710和与阀杆710连接的阀头720,阀口410与第二接口140连通,阀口410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410向外排出。当阀针组件700的阀头720封闭阀口410,也即介质流通腔340和阀口410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130流向第二接口140;当阀针组件700的阀头720解除对阀口410的密封,也即介质流通腔340和阀口410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130流向第二接口140。其中,所述阀口410的内壁形成流量调节面411,所述流量调节面411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411抵接时,阀头720完全封闭阀口410,当阀头720向上移动时,阀头720与流量调节面411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410并流出,所述阀头720通过控制阀头720与流量调节面411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。
所述阀口座400安装在导向套300中,并且与导向套300铆接,具体说来,所述阀口座400和所述导向套300通过铆接的方式进行连接,铆接后其阀口座400与导向套300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。需要强调的是,所述阀口座400可以是一个独立的阀口座400,其材质可以是硬质材料,也可以是软质材料,独立的阀口座400与所述导向套300铆接;或者,所述阀口座400可以包括多个阀口座,多个阀口座400之间通过连接结构连接或相互抵接,例如:所述阀口座400包括第一阀口座和第二阀口座,所述第一阀口座位于所述第二阀口座的上方,且所述第一阀口座的下表面与所述第二阀口座的上表面抵接,所述导向套300与所述第二阀口座的下表面铆接,其中,所述第一阀口座的材料和所述第二阀口座的材料可以设置为相同材料,也可以设置为不同材料,对此不作具体限制。至于所述硬质材料的类型,可以是ABS,HIPS,PP,PC等硬质材料,亦或者是金属或合金材料等,所述软质材料的类型,可以是硅胶、橡胶等,在此不设具体限制。将所述阀口座400与导向套300焊接时,其通常是先通过装配设备将阀口座400按压入导向套300中,使阀口座400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,将阀口座400与导向套300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组件的生产效率。当然,在其他实施例中,所述阀口座400与导向套300还可以通过焊接、卡接或其他连接方式进行连接,对此不作具体限制。
进一步地,将所述阀口座400与导向套300通过铆接的方式进行连接,此时所述阀口座400的材质可以采用非金属材质,例如橡胶或塑料材质,降低生产成本,且非金属材料的阀口座400易加工,可以进一步提高生产效率,同时,非金属材料的阀口座400质量较轻,可以减轻电子膨胀阀组件的重量,实现轻型化。当然,所述阀口座400还可以采用其他材料制成,对此不设具体限制。
本申请的电子膨胀阀组件包括导向套300以及阀口座400;所述阀口座400设置于所述导向套300,所述阀口座400与所述导向套300铆接,所述阀口座400具有阀口410,所述阀口410的内壁形成流量调节面411,所述流量调节面411向下倾斜延伸。铆接的工序少,且用时短,如此,可以提高电子膨胀阀组件的生产效率。
请参阅图3,在一实施例中,所述导向套300具有第一安装孔310,所述阀口座400设置于所述第一安装孔310,所述导向套300的下端向下凸设有铆接部330,所述铆接部330通过自身形变与所述阀口座400的下端面抵接。具体地,阀口座400安装在第一安装孔310中,并与所述第一安装孔310密封连接,所述第一接口130和第二接口140可以通过阀口410连通。所述导向套300与阀口座400的铆接可以是铆接部330通过自身形变与所述阀口座400的下端面抵接来实现的,操作简单,方便快捷。所述铆接部330可以开设在导向套300的下端,并靠近第一通孔处。优选地,所述铆接部330位于所述第一通孔的周缘,并自导向套300的下端向下延伸,可以减少铆接部330与阀口座400的下端面抵接后,铆接部330的内壁与阀口座400的外壁之间的间隙,提高铆接的稳固性。
请继续参阅图3,进一步地,所述导向套300还具有与所述第一安装孔310连通的第二安装孔320,所述第一安装孔310的内径大于所述第二安装孔320的内径,所述第一安装孔310的上端面形成限位部311,所述阀口座400包括第一安装部420和第二安装部430,所述第一安装部420与所述第二安装部430连接,所述第一安装部420的上端面与所述限位部311抵接。
具体地,所述第一安装孔310的内径大于所述第二安装孔320的内径,所述第一安装孔310位于所述第二安装孔320的下方,当将所述阀口座400按压入导向套300中时,所述第一安装部420位于第一安装孔310中,所述第二安装部430位于第二安装孔320中。所述第一安装孔310和第二安装孔320的连接处(即第一安装孔310的上端面)形成限位部311,所述限位部311与第一安装部420的上端面抵接,所述限位部311可以对阀口座400起到限位的作用,以实现阀口座400的固定,避免阀口座400过度压装至导向套300内。
请参阅图6、图7,在一实施例中,所述铆接部330的内径和所述第一安装孔310的内径之间的差值为D,2 mm≥D≥0.005 mm。具体说来,铆接部330的内径要大于第一安装孔310的内径,在将阀口座400压装到导向套300中时,阀口座400的上端先由导向套300的下端压入导向套300中,一直压装至第一安装部420的上端面与限位部311抵接。铆接部330的内径大于第一安装孔310的内径,便于阀口座400对准第一安装孔310并压入导向套300中,可以对阀口座400的压装起到较佳的导向作用。优选地,所述铆接部330的内径和所述第一安装孔310的内径之间的差值为D,0.5 mm≥D≥0.005 mm。
请参阅图3至图8,在一实施例中,所述电子膨胀阀组件还包括垫片500,所述垫片500安装于所述第一安装孔310,并与所述阀口座400的下端面抵接,所述垫片500与所述导向套300铆接。
具体地,还可以在阀口座400的下端设置一个垫片500,垫片500的上端和阀口座400的下端抵接,此时,铆接部330与垫片500的下端面抵接,所述垫片500与所述导向套300铆接,垫片500可以对阀口座400起到支撑的作用。所述垫片500上应当开设有与阀口座400的阀口410对应的通孔,以供流体介质流通。可以理解的是,所述导向套300的下端向下凸设有铆接部330,所述铆接部330通过自身形变与所述垫片500的下端面抵接。具体说来,在进行装配时,将阀口座400先按压入导向套300中,然后在将垫片500按压入导向套300中,通过铆接设备使导向套300下端的铆接部330变形至与垫片500的下端面抵接,以将垫片500固定安装在导向套300中,此时垫片500的上端和阀口座400的下端抵接,垫片500可以对阀口座400起到支撑的作用。所述垫片500的材质可以采用金属材质,也可以采用非金属材质,对此不作具体限制。
在一实施例中,所述垫片500和所述阀口座400一体成型。这样设计,免去了垫片500和阀口座400之间装配的麻烦,进一步提高了生产效率。所述垫片500和所述阀口座400采用同种材料,可以采用塑料材料制成,易加工,可以进一步提高生产效率,同时,塑料材料的质量较轻,可以减轻电子膨胀阀组件的重量,实现轻型化。
请参阅图5至图8,在一实施例中,所述垫片500的下端面凸出于所述导向套300的下端面。具体地,当垫片500压装至导向套300中后,垫片500的下端面还凸出于导向套300的下端面,通过铆接设备使铆接部330变形与垫片500的下端面抵接,铆接部330铆接后其形状大致为L形,铆接部330的部分与垫片500的侧壁抵接,部分与垫片500的下端面抵接,铆接部330可以很好的包裹垫片500,以增强垫片500压装入导向套300中的稳固性。
请参阅图3和图4,在一实施例中,所述电子膨胀阀组件还包括密封结构600,所述密封结构600位于所述导向套300的内壁面和所述阀口座400的外壁面之间,所述导向套300和所述阀口座400通过所述密封结构600密封连接。具体地,所述密封结构600可以是单独设置的密封件,也可以是与导向套300或阀口座400一体设置的密封部,通过该密封结构600将导向套300与阀口座400密封连接在一起,防止流体介质通过导向套300与阀口座400的连接处流出,避免电子膨胀阀组件在使用时产生内泄漏。
请参阅图3和图4,在一实施例中,所述密封结构600包括设置于所述阀口座400的外壁面的多个凸筋600,所述导向套300的内壁面开设有多个限位槽,所述凸筋600设置于所述限位槽。具体地,在对阀口座400进行装配时,将阀口座400从导向套300的第一安装口按压进去,并使得多个凸筋600适配卡入多个限位槽中,以将导向套300与阀口座400密封连接在一起,防止流体介质通过导向套300与阀口座400的连接处流出,避免电子膨胀阀组件在使用时产生内泄漏。当然,多个所述凸筋600也可以设置在导向套300的内壁面,多个限位槽设置在阀口座400的外壁面,对凸筋600和限位槽的位置不作限制。
在另一实施例中(该实施例未图示出),所述密封结构600包括密封件,所述阀口座400的外壁面开设有凹槽,所述密封件设置于所述凹槽,并与所述导向套300的内壁面抵接;或者,所述导向套300的内壁面开设有凹槽,所述密封件设置于所述凹槽,并与所述阀口座400的外壁面抵接。具体地,所述密封件可以是橡胶圈,橡胶圈具有弹性,将橡胶圈放置在凹槽中,凹槽可以对密封件起到较好的限位作用。密封件可以与导向套300的内壁面抵接或与阀口座400的外壁面抵接,其密封件采用过盈配合进行装配,在装配完成后,密封件会发生形变,紧紧地与导向套300的内壁面或与阀口座400的外壁面抵接,使得阀口座400和导向套300密封连接,提高阀口座400和导向套300连接处的密封性,防止流体介质通过导向套300与阀口座400的连接处流出,避免电子膨胀阀组件在使用时产生内泄漏。
具体说来,可以根据实际需求,选择上述实施例中的任意一种方式实施,或者两种方式可以同时实施,在此不设具体限定。
请参阅图1,在一实施例中,所述电子膨胀阀组件还包括螺母组件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410的轴向往复运动,以带动所述阀头720打开或关闭所述阀口410。
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410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410。
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410运动,当阀头720封闭阀口410,也即介质流通腔340和阀口410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130流向第二接口140;当阀头720解除对阀口410的密封,也即介质流通腔340和阀口410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130流向第二接口140。由于电子膨胀阀10中阀口410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。
请继续参阅图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410。阀壳体1000对电子膨胀阀10的内部元件起到保护的作用。流体介质在电子膨胀阀10工作时,可以流入容纳腔中。
本申请还提出一种电子膨胀阀10,所述电子膨胀阀10包括阀座100以及上述电子膨胀阀组件,所述电子膨胀阀组件安装于所述阀座100。所述电子膨胀阀组件的具体结构参照上述实施例,由于本电子膨胀阀10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,所述电子膨胀阀还包括连接座200,所述连接座200设置于所述阀座100,并与所述导向套300连接。
具体地,导向套300设置于所述阀座100的阀腔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。导向套300内还具有介质流通腔340,该介质流通腔340与阀腔120连通,阀腔120与第一接口130连通,阀口座400安装在导向套300内,并与导向套300密封连接,阀口座400具有阀口410,阀口410与第二接口140连通,所述介质流通腔340可以与所述阀口410连通,以使得第一接口130和第二接口140连通。本申请的连接座200的直径较大,导向套300的直径较小,可以将两者分体设置,并将导向套300和连接座200连接在一起。相比于传统的将导向套300和连接座200一体设置的方案,将两者分体设置,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。
在一实施例中,所述导向套300的材质为铝合金材质,所述导向套300与所述连接座200铆接。具体地,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。
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,凡是在本申请的申请构思下,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 (16)

  1. 一种电子膨胀阀组件,用于安装在电子膨胀阀的阀座上,其中,所述电子膨胀阀组件包括:
    导向套;以及
    阀口座,设置于所述导向套,所述阀口座与所述导向套铆接,所述阀口座具有阀口,所述阀口的内壁形成流量调节面,所述流量调节面向下倾斜延伸。
  2. 如权利要求1所述的电子膨胀阀组件,其中,所述导向套具有第一安装孔,所述阀口座设置于所述第一安装孔,所述导向套的下端向下凸设有铆接部,所述铆接部通过自身形变与所述阀口座的下端面抵接。
  3. 如权利要求2所述的电子膨胀阀组件,其中,所述导向套还具有与所述第一安装孔连通的第二安装孔,所述第一安装孔的内径大于所述第二安装孔的内径,所述第一安装孔的上端面形成限位部,所述阀口座包括第一安装部和第二安装部,所述第一安装部与所述第二安装部连接,所述第一安装部的上端面与所述限位部抵接。
  4. 如权利要求2或3所述的电子膨胀阀组件,其中,所述铆接部的内径和所述第一安装孔的内径之间的差值为D,2 mm≥D≥0.005 mm。
  5. 如权利要求2至4中任意一项所述的电子膨胀阀组件,其中,所述铆接部的内径和所述第一安装孔的内径之间的差值为D,0.5 mm≥D≥0.005 mm。
  6. 如权利要求2至5中任意一项所述的电子膨胀阀组件,其中,所述电子膨胀阀组件还包括垫片,所述垫片安装于所述第一安装孔,并与所述阀口座的下端面抵接,所述垫片与所述导向套铆接。
  7. 如权利要求6所述的电子膨胀阀组件,其中,所述垫片和所述阀口座一体成型。
  8. 如权利要求6或7所述的电子膨胀阀组件,其中,所述垫片的下端面凸出于所述导向套的下端面。
  9. 如权利要求1至8中任意一项所述的电子膨胀阀组件,其中,所述阀口座的材质为非金属材质。
  10. 如权利要求1至9中任意一项所述的电子膨胀阀组件,其中,所述电子膨胀阀组件还包括密封结构,所述密封结构位于所述导向套的内壁面和所述阀口座的外壁面之间,所述导向套和所述阀口座通过所述密封结构密封连接。
  11. 如权利要求10所述的电子膨胀阀组件,其中,所述密封结构包括设置于所述阀口座的外壁面的多个凸筋,所述导向套的内壁面开设有多个限位槽,所述凸筋设置于所述限位槽。
  12. 如权利要求10所述的电子膨胀阀组件,其中,所述密封结构包括密封件,所述阀口座的外壁面开设有凹槽,所述密封件设置于所述凹槽,并与所述导向套的内壁面抵接;或者,所述导向套的内壁面开设有凹槽,所述密封件设置于所述凹槽,并与所述阀口座的外壁面抵接。
  13. 一种电子膨胀阀,其中,所述电子膨胀阀包括:
    阀座;以及
    如权利要求1至12中任意一项所述的电子膨胀阀组件,所述电子膨胀阀组件安装于所述阀座。
  14. 如权利要求13所述的电子膨胀阀,其中,所述电子膨胀阀还包括连接座,所述连接座设置于所述阀座,并与所述导向套连接。
  15. 一种制冷设备,其中,所述制冷设备包括如权利要求13或14所述的电子膨胀阀。
  16. 如权利要求15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/CN2023/104106 2022-07-27 2023-06-29 电子膨胀阀组件、电子膨胀阀及制冷设备 WO2024022000A1 (zh)

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