WO2019179518A1 - 电子膨胀阀 - Google Patents

电子膨胀阀 Download PDF

Info

Publication number
WO2019179518A1
WO2019179518A1 PCT/CN2019/079232 CN2019079232W WO2019179518A1 WO 2019179518 A1 WO2019179518 A1 WO 2019179518A1 CN 2019079232 W CN2019079232 W CN 2019079232W WO 2019179518 A1 WO2019179518 A1 WO 2019179518A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
electronic expansion
valve
expansion valve
support frame
Prior art date
Application number
PCT/CN2019/079232
Other languages
English (en)
French (fr)
Inventor
王宇栋
Original Assignee
浙江三花智能控制股份有限公司
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 浙江三花智能控制股份有限公司 filed Critical 浙江三花智能控制股份有限公司
Priority to KR1020207029022A priority Critical patent/KR102445410B1/ko
Priority to JP2020547327A priority patent/JP7127142B6/ja
Publication of WO2019179518A1 publication Critical patent/WO2019179518A1/zh

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/38—Expansion means; Dispositions thereof specially adapted for reversible cycles, e.g. bidirectional expansion restrictors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • 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
    • F16K27/02—Construction of housing; Use of materials therefor of lift 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
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
    • 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
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • 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
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift 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
    • 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
    • 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 invention relates to the technical field of refrigeration control, and particularly relates to an electronic expansion valve for regulating the flow rate of a refrigerant.
  • FIG. 1 shows a typical electronic expansion valve product structure, which comprises a base 1, a valve body 2 and a casing assembly.
  • the base 1 is fixedly connected with the valve body 2 and the base 1 is provided with a valve port 11 and a casing.
  • the assembly includes a first outer casing 31 and a second outer casing 32.
  • the first outer casing 31 and the second outer casing 32 are fixedly coupled.
  • the first outer casing 31 is formed with a first inner cavity, the first inner cavity receives a driving portion, and the second outer casing 32 is formed.
  • There is a second inner cavity the second inner cavity contains a transmission component
  • the driving part includes a rotor component 41
  • the central part of the driving part further has a rotating shaft 42.
  • the transmission component includes a gear reduction gear mechanism, and the reduction gear mechanism is a multi-stage gear
  • the speed reduction mechanism comprises a sun gear, a first gear and a second gear, and the second gear is fixedly connected with a screw rod 43.
  • the screw rod 43 and the valve needle 7 cooperate with the valve needle 7 to approach or move away from the valve port 11 to adjust the flow through valve.
  • the flow rate of the refrigerant of the port 11 is briefly described below.
  • the electronic expansion valve is transmitted to the driving portion by the pulse action, the rotor member 41 is driven to rotate, and the rotating shaft 42 is driven by the rotation of the rotor.
  • the male gear rotates and is transmitted by the gears of the transmission parts.
  • the secondary gear drives the screw 43 to rotate axially, and the valve needle 7 is axially lifted by the threaded action of the screw 43 and the nut to approach or away from the valve port 11 Finally, the purpose of regulating the flow is achieved.
  • the electronic expansion valve product structure is designed to improve the precision and the valve driving force.
  • the reduction gear mechanism is installed to increase the overall size of the product, and the screw rod 43 and the secondary gear are fixedly connected in order to rotate the screw rod 43 only in the circumferential direction.
  • the outer peripheral portion of the secondary gear is fixedly mounted with a bearing member. The upper portion of the bearing member is stopped by a snap ring, and the lower retaining ring stops to prevent the screw rod 43 from moving in the up and down direction. More, the assembly process is complex, which will increase the manufacturing cost.
  • the invention provides an electronic expansion valve, which has a simple overall structure and can limit the screw rod in the axial direction.
  • the electronic expansion valve comprises a valve body, the valve body is provided with a valve port; the outer casing and the outer casing are fixedly connected directly or indirectly to the valve body; the rotor assembly, the rotor assembly comprises a rotor and a screw rod, and the screw rod is provided with a male thread portion And the screw step portion, the screw rod can directly or indirectly abut against the outer casing (90); the support frame, the support frame and the valve body are directly or indirectly fixedly connected, the support frame has an end table, the end table and the screw
  • the step assembly; the core assembly, the core assembly includes a nut having an internal threaded portion that cooperates with the externally threaded portion, and the core assembly is engageable in the valve cavity by the threaded action of the externally threaded portion and the internally threaded portion Axial lifting movement to approach or away from the valve port.
  • the electronic expansion valve provided by the invention eliminates the reduction gear device and other complicated components in the background art, and the cooperation of the screw rod step and the support frame and the cooperation of the screw rod directly or indirectly with the outer casing are in the axial direction of the screw rod The direction is limited.
  • the electronic expansion valve is actuated, the screw and the rotor are always rotated in the circumferential direction, and the overall structure of the product is relatively simple.
  • Figure 1 is a schematic view showing the structure of a typical electronic expansion valve
  • FIG. 2 is a schematic view showing a first embodiment of an electronic expansion valve according to the present invention.
  • FIG. 3 is a schematic structural view of a support frame provided with an electronic expansion valve according to the present invention.
  • FIG. 4 is a schematic view showing a second embodiment of an electronic expansion valve according to the present invention.
  • Figure 5 is a schematic illustration of a third embodiment of the present invention providing an electronic expansion valve
  • Figure 6 is a schematic illustration of a fourth embodiment of an electronic expansion valve of the present invention.
  • FIG. 2 is a schematic diagram of a first embodiment of an electronic expansion valve according to the present invention.
  • the electronic expansion valve includes a valve body 10.
  • the valve body 10 has a cylindrical structure and a valve cavity.
  • the valve body 10 is formed.
  • a valve port 101 is opened, and the valve port 101 is matched with the core assembly 60.
  • the valve seat 20 can also be disposed in the electronic expansion valve structure.
  • the valve body 10 and the valve seat 20 can be used as separate components, and the valve body is assembled. 10 is welded and fixed to the valve seat 20, the valve port 101 can be disposed on the valve seat 20, the side wall of the valve body 10 is opened with a first connection port by punching or the like, and the lower end portion of the valve body 10 is provided with a second connection port.
  • the first connecting port is welded and fixed with a first connecting connecting tube 100
  • the second connecting port is welded and fixed with a second connecting connecting tube 200.
  • the first connecting connecting tube 100 and the second connecting connecting tube 200 are electrically connected through the valve port 101, and the refrigerant can be driven from the first After the connecting nozzle 100 enters the valve cavity, the second connecting connecting tube 200 flows out through the valve port 101 or the refrigerant can enter the valve cavity from the second connecting connecting tube 200, and then flows out through the first connecting connecting tube 100 through the valve port 101.
  • the electronic expansion valve has a pair The two-way circulation adjustment function of the refrigerant.
  • the connecting portion 30 includes a connecting seat body 31, a guiding wall 32 and a protruding portion 33.
  • the connecting base 30 is further provided with a guiding hole 321 After the cavity is welded and fixed to the valve body 10, the connecting seat 30 is integrally fixedly mounted to the valve body 10.
  • the outer peripheral wall of the connecting seat body 31 is welded and fixed to the inner peripheral wall of the valve body 10, and the guiding wall 32 extends into the valve cavity, and the core body At least a portion of the assembly 60 can extend into the valve cavity through the guiding hole 321 and can perform an axial lifting movement along the guiding hole 321 .
  • the connecting seat body 31 is provided with a first step portion 311 , and the first step portion 311 forms a first step surface 3111 .
  • the protrusion portion 33 is provided with a second step portion 331.
  • the second step portion 331 is welded and fixed to the outer casing 90.
  • connection base 30 may also be integrated with the valve body 10, and the connection seat 30 and the valve body 10 are integrated.
  • the outer casing 90 can also be fixedly connected to the valve body 10, that is, the outer casing 90 can be fixedly connected to the valve body 10 through the connecting seat 30, or can be directly fixedly connected to the valve body 10.
  • the outer casing 90 together with the connecting seat 30, is formed with a rotor cavity that houses a rotor assembly 40 that includes a rotor 41 and a lead screw 44.
  • the rotor 41 is generally a magnetic member of approximately H shape, and the rotor 41 has a rotor convexity. 411, the lead screw 44 is provided with a screw groove portion 442, the rotor protrusion 411 abuts against the screw groove portion 442, and the rotor 41 and the screw rod 44 are integrally injection-molded.
  • the screw rod 44 and the rotor 41 are an integral structure, and the screw rod is also rotated.
  • the screw rod 44 is further provided with a screw step portion 441 and a screw mounting hole 444.
  • the screw rod step portion 441 abuts the support frame 50, and the screw rod mounting hole
  • the 444 is adapted to the rotating shaft 43.
  • the electronic expansion valve further includes a fixing base 42.
  • the fixing seat 42 is integrally press-fitted into the inner cavity of the outer casing 90 and fixedly connected with the outer casing 90.
  • the fixing base 42 is located above the rotor 41 and serves as an independent The member does not interfere with the rotor 41.
  • the fixing base 42 has a guiding portion 421.
  • the guiding portion 421 forms a guiding hole 4211 which is adapted to the rotating shaft 43.
  • One end of the rotating shaft 43 is matched with the guiding hole 4211.
  • One end of the rotating shaft 43 is Clearance between the guiding holes 4211
  • the other end of the rotating shaft 43 is matched with the screw mounting hole 444.
  • the other end of the rotating shaft 43 and the screw mounting hole 444 may be a clearance fit or a tight fitting manner, and the spring member 80 is sleeved on the outer peripheral portion of the rotating shaft 43.
  • One end of the spring member 80 is mated with the bottom wall 4213 of the guiding portion, and the other end is engaged with the screw end 443 of the screw 44.
  • the screw 44 passes through the step of the screw step 441 and the end of the support frame 50.
  • the cooperation function of the countertop 511 restricts the axial downward displacement of the screw 44 when the electronic expansion valve is actuated.
  • the screw 44 is indirectly passed through the fixing base 42, the rotating shaft 43, and the spring member 80 sleeved on the outer peripheral portion of the rotating shaft 43.
  • the ground is matched with the outer casing, and the spring member 80 is respectively engaged with the screw end portion 443 and the guiding portion bottom wall 4213 to prevent axial displacement of the screw rod 44, and the screw rod is made during the operation of the electronic expansion valve. 44 always maintains a rotational motion in the circumferential direction.
  • valve closing state After the valve head 622 abuts against the valve port 101, that is, the valve closing state, the screw 44 is continuously transmitted to the coil pulse by the system to continue to close the valve port downward. 101, the fixed valve port 101 at this time forms a reaction force on the valve head 622 to cause the valve needle 62 to shift upward, which causes the screw step portion 441 to be disengaged from the end table 511 of the support frame 50 to generate an axial upward displacement.
  • the spring force of the spring member 80 is set to be much larger than the driving force generated by the coil to ensure that the valve needle 622 is in the upper and lower force balance state, and the valve head 622 is always maintained with the valve.
  • the electronic expansion valve shown in FIG. 3 further includes a support frame 50.
  • the support frame 50 includes an upper support frame 51 and a lower support frame 52.
  • the support frame 50 is welded and fixed to the connection base 30, specifically, through the outer peripheral wall of the lower support frame 52.
  • the inner peripheral wall of the protrusion 33 is welded and fixed, so that the support frame 50 is integrally fixed to the connecting base 30, and the support frame 50 is fixedly connected to the valve body 10 through the connecting seat 30.
  • the support frame 50 is provided.
  • the valve body 10 is directly welded and fixed, and the support frame 50 can be directly or indirectly welded to the valve body 10.
  • the wall portion of the lower support frame 52 is provided with a fitting groove 53 which cooperates with the nut 61 to limit the circumferential position of the core assembly 60 to prevent the core assembly 60 from rotating in the circumferential direction
  • the support frame 50 is further provided with a limiting hole 54 which cooperates with the screw rod 44.
  • the screw rod 44 passes through the limiting hole 54 to cooperate with the core assembly 60.
  • the upper support frame 51 has an end table 511, specifically the end table 511. As the end surface portion of the upper support frame 51, the end table 511 is mated with the screw step portion 441 to prevent the screw shaft 44 from axially downward.
  • the electronic expansion valve further includes a core assembly 60 including a nut 61 and a valve needle 62.
  • the nut 61 includes a nut body 611.
  • the nut body 611 is press-fitted into the valve needle cavity 621.
  • the nut 61 includes a connecting piece 612 and a nut.
  • the main body 611 and the connecting piece 612 can be made of a metal material. When the metal piece is 611, the connecting piece 612 is welded and fixed to the nut body 611. When the nut body 611 is made of a plastic material, the connecting piece 612 and the nut body are used. 611 is integrally injection molded, and the specific material of the nut 61 or the connecting piece 612 is not limited herein.
  • the nut 61 further includes a fitting portion 613 which is extended outwardly from the nut body 611, and the nut 61 passes through the connecting piece 612.
  • the end surface is welded and fixed to the end surface of the valve needle 62 so as to be integrally connected to the valve needle 62.
  • the nut body 611 is provided with a nut mounting hole 614 for the threaded rod 44 to pass through, and the nut 61 is provided with the external thread portion 44a of the screw rod 44.
  • the threaded internal thread portion 60a converts the rotational motion of the screw rod 44 into the axial lifting movement of the core assembly 60 by the screwing action of the screw rod 44 and the nut 61, and the fitting portion 613 can be engaged with the fitting portion.
  • the card assembly core assembly 60 of the support frame 50 can only be axially lifted and cannot perform the circumferential rotation movement. It should be noted that the support frame 50 simultaneously serves to limit the axial position of the screw rod 44 and Limiting the position of the core assembly 60 in the circumferential position.
  • the valve needle 61 as a whole has a hollow approximately equal-diameter cylindrical structure, including a valve head 622 and a valve needle body 623. The valve head 622 is moved toward or away from the valve port 101 by the axial lifting movement of the core assembly 60 to circulate the refrigerant flowing through the valve port 101. The flow rate is adjusted, and the outer wall of the valve needle body 623 is gap-fitted with the guide wall 32.
  • the valve needle body 623 extends into the valve cavity through the guide hole 321 and the valve needle body 623 can move axially along the guide wall 32.
  • the connection seat 30 The guide wall 32 provides a guiding action to the valve needle 62 to maintain the valve needle 62 coaxial with the central axis of the valve port 101 to improve stability and reliability when the electronic expansion valve is actuated.
  • a sealing member 70 is further provided.
  • the valve head 622 and the valve port 101 are performed. Abutting, if the refrigerant enters the inside of the valve body 10 from the second connecting joint 200, the core assembly 60 together with the screw 44 and the like will be subjected to a certain refrigerant pressure impact. If the sealing member 70 is not provided, the higher pressure of the refrigerant will directly rush.
  • the valve opening portion 101 disengages the valve head 622 from the valve port 101 and does not achieve the valve closing effect, and also has a certain impact force on the screw rod 44.
  • the sealing member 70 includes a washer, an O-ring, and a pressing piece.
  • the sealing member 70 may also include only an O-ring and a pressing piece.
  • the sealing member 70 is located between the second stepped surface 3111 and the lower end portion of the lower support frame 52.
  • the gasket or the O-ring is engaged with the second stepped surface 3111. In the abutment fit, the tablet is press-fitted into the inside of the projection 30 to fix the O-ring.
  • the rotor assembly 40 is driven by the excitation to rotate the rotor 41, and the screw 44 is rotated circumferentially, by the external thread portion 44a of the screw 44 and the internal thread portion 60a of the nut 61.
  • the threaded engagement action the core assembly 60 performs an axial lifting movement and the mating portion 613 also moves axially up and down along the mating slot 53 to cause the valve head 622 to approach or move away from the valve port 101 to regulate the flow of refrigerant through the valve port 101.
  • the engaging portion 613 is relatively close to the lower side of the engaging groove 53.
  • the engaging portion 613 When the valve head 622 is away from the valve port 101, the engaging portion 613 is relatively close to the upper side of the engaging groove 53, when the valve head 622 is spaced from the valve When the mouth 101 is the farthest, the fitting portion 613 can abut against the top wall surface 521 of the lower support frame 52.
  • the electronic expansion valve structure eliminates the gear reduction mechanism of the prior art and other complicated component configurations such as bearings, and only requires the cooperation of the support frame 50 through the end table 511 and the screw step 441 to the shaft of the screw 44. The downward displacement is limited, and the cooperation of the spring member 80 with the guiding bottom wall 4213 and the screw end 443 respectively limits the axial upward displacement of the screw, further ensuring that the screw 44 and the rotor 41 are only in the circumference.
  • the rotation of the motor is prevented from being displaced up and down in the axial direction, which simplifies the assembly structure of the product as a whole, and the rotor 41 and the screw 44 are always maintained in the circumferential rotational motion without displacement so that the size of the product is reduced in the axial direction.
  • the miniaturization of the overall structure of the product further reduces the manufacturing cost, and the other rotor 41 maintains the circumferential rotation during the operation of the electronic expansion valve, and the coil driving device fixed to the outer peripheral portion of the outer casing portion 9 can also be reduced in size due to the rotor 41.
  • the central shaft remains in agreement with the central axis of the coil drive portion to fully exert the magnetic force of the rotor 41 to further reduce the drive required during the actuation.
  • the core assembly 60 under the screw 44 is incapable of circumferential rotation by the engaging groove 53 of the support frame 50 and the engaging portion 613, and can only perform axial lifting movement under the driving of the screw 44, and the electronic expansion After the valve is excited by the coil, the rotational movement of the screw 44 is gradually converted into the lifting movement of the core assembly 60 along the guiding wall 32 through the screwing action of the external thread portion 44a and the internal thread portion 60a to adjust the flow through the valve port 101.
  • the refrigerant flow rate, the electronic expansion valve structure belongs to the direct-acting driving mode. Compared with the background technology, even a small driving force can smoothly open and close the valve and maintain the accuracy of the flow adjustment without the need of complicated reduction gears.
  • the mechanism controls the adjustment accuracy of the flow rate and the opening and closing valve by increasing the reduction ratio.
  • a second embodiment of the present invention provides an electronic expansion valve.
  • the embodiment eliminates the spring member 80, and the guide end portion 4212 of the fixing base 42 and the top wall 91 are performed.
  • the shaft end portion 431 is mated with the top wall 91.
  • the fixing base 42 has a guiding portion 421.
  • the guiding portion 421 is provided with a guiding hole 4211.
  • the rotating shaft 43 is matched with the guiding hole 4211, and the guiding portion 421 is opposite to the rotating shaft. 43 is provided with a guiding function.
  • One end of the rotating shaft 43 is matched with the guiding hole 4211, and the other end is embedded in the screw mounting hole 444.
  • the screw rod 44 is indirectly engaged with the outer casing 90 through the rotating shaft 43 and the fixing base 42 through the rotating shaft end.
  • the abutting engagement of the portion 431 and the guiding end portion 4212 with the top wall 91 respectively limits the axial upward movement of the screw 44, and the end table 511 of the support frame 50 abuts against the screw step portion 441 to match the wire.
  • the axial downward movement of the rod 44 is limited, so that the screw 44 together with the rotor 41 always maintains a rotational movement in the circumferential direction during the operation of the electronic expansion valve, and the axial lifting movement cannot be performed.
  • Other related actuation principles have been specifically described in the first embodiment and will not be further described herein.
  • a third embodiment of the present invention provides an electronic expansion valve.
  • the fixing base 42 is fixedly connected to the outer casing 90, and the guiding end portion 4212 is engaged with the top wall 91.
  • One end of the rotating shaft 43 and the guiding hole are shown. 4211 fits, the other end is embedded in the screw mounting hole 444, the screw end 443 abuts against the guiding bottom wall 4213, and the screw 44 is indirectly engaged with the rotating shaft 43 and the outer casing 90 through the fixing base 42 through the screw end
  • the portion 443 is abutted against the bottom wall 4213 of the guiding portion to limit the upward movement of the screw shaft 44.
  • the end table 511 of the supporting frame 50 abuts against the screw step portion 441 to axially the screw rod 44. The downward movement is limited so that the screw 44 together with the rotor 41 always rotates in the circumferential direction when the electronic expansion valve is actuated, and the axial lifting movement cannot be performed.
  • FIG. 6 shows a fourth embodiment of the electronic expansion valve provided by the present invention.
  • the screw end 443 of the screw 44 is abutted with the top wall 91 of the outer casing 90, that is, the screw 44 passes.
  • the direct engagement with the outer casing 90 abuts to limit the axial upward displacement of the screw 44, and further combines the abutment engagement of the end table 511 of the support frame 50 with the screw step 441 to prevent the shaft of the screw 44.
  • the downward displacement causes the lead screw 44 together with the rotor 41 to be unable to perform an axial lifting motion at all times.
  • the electronic expansion valve provided by the invention limits the axial direction of the screw rod and the rotor by the cooperation of the support frame and the screw rod and the cooperation of the screw rod directly or indirectly with the outer casing member, so that the screw rod and the rotor are in the electronic expansion valve During the operation, the circumferential rotation is always maintained, and the axial lifting movement cannot be performed, and the rotary motion of the screw rod is directly converted into the lifting movement of the core assembly in the axial direction by the screwing action, and the electronic expansion valve product cancels the reduction gear
  • the structure of the mechanism and other complicated components is relatively simple.

Landscapes

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

Abstract

一种电子膨胀阀，包括阀体（10），阀体（10）形成阀腔并设有阀口（101）；外壳（90）直接或间接与阀体（10）固定连接；转子组件（40）包括转子（41）、丝杆（44），丝杆（44）设有外螺纹部（44a）及丝杆台阶部（441），丝杆（44）能够直接或间接与外壳（90）抵接配合；支撑架（50）与阀体（10）直接或间接固定连接，支撑架（50）的端部台面（511）与丝杆台阶部（441）配合；芯体组件（60）包括螺母（61），螺母（61）具有与外螺纹部（44a）相配合的内螺纹部（60a），芯体组件（60）通过外螺纹部（44a）与内螺纹部（60a）的螺纹配合作用进行轴向升降运动以接近或远离阀口（101）。该产品结构通过支撑架（50）与丝杆（44）的配合关系以及丝杆（44）直接或间接地与外壳（90）的配合关系对丝杆（44）连同转子（41）在轴向方向的移动进行限位，缩减产品轴向尺寸，减小线圈驱动力，能够使电子膨胀阀产品实现小型化及降低制造成本目的。

Description

电子膨胀阀
本申请要求2018年03月23日提交中国专利局、申请号为201810244337.5、发明名称为“电子膨胀阀”的中国专利申请的优先权，其中，该专利所记载的全部内容通过引用结合在本申请中。
技术领域
本发明涉及制冷控制技术领域，具体涉及一种调节冷媒流量的电子膨胀阀。
背景技术
请参考图1，图1显示的为一种典型的电子膨胀阀产品结构，其包括底座1、阀体2以及外壳组件，底座1与阀体2固定连接且底座1开设有阀口11，外壳组件包括第一外壳31和第二外壳32，第一外壳31和第二外壳32固定连接，第一外壳31形成有第一内腔，该第一内腔容纳有驱动部，第二外壳32形成有第二内腔，该第二内腔里容纳有传动部件，驱动部包括有转子部件41，驱动部中央还贯穿有转轴42，传动部件包括齿轮减速齿轮机构，该减速齿轮机构为多级齿轮减速机构包括太阳齿轮、一级齿轮和二级齿轮，二级齿轮固定连接有丝杆43，丝杆43和阀针7通过螺纹配合作用使阀针7接近或远离阀口11以调节流经阀口11的冷媒的流量，下面简单陈述下该产品的工作原理：电子膨胀阀受脉冲作用传递给驱动部，转子部件41受驱动进行旋转，转轴42随转子的旋转进行随转运动而驱动太阳齿轮旋转，受传动部件的各级齿轮进行传递作用二级齿轮带动丝杆43进行轴向旋转，阀针7通过丝杆43和螺母的螺纹配合作用进行轴向升降以接近或远离阀口11，最终实现流量的调节目的。该电子膨胀阀产品结构设计为提升精度及开阀驱动力安装了减速齿轮机构，使产品整体的尺寸增加且为了使丝杆43只在周向上旋转将丝杆43和二级齿轮进行固定连接，二级齿轮的外周部又固定安装有轴承部件，该轴承部件的上部由卡环进行止挡，下部挡圈进行止挡阻止丝杆43在上下方向位置的移动，该产品整体结构装配零部件较多，装配工艺复杂，会额外增加制造成本。
发明内容
本发明提供一种电子膨胀阀，产品整体结构较为简单且能够对丝杆在轴向方向进行限位。
本发明提供的电子膨胀阀，包括阀体，阀体设有阀口；外壳，外壳与阀体直接或间接地固定连接；转子组件，转子组件包括转子及丝杆，丝杆设有外螺纹部及丝杆台阶部，丝杆能够直接或间接地与外壳(90)抵接配合；支撑架，支撑架与阀体直接或间接地固定连接，支撑架具有端部台面，端部台面与丝杆台阶部配合；芯体组件，芯体组件包括螺母，螺母具有与外螺纹部相配合的内螺纹部，通过外螺纹部与内螺纹部的螺纹配合作用，芯体组件能够在所述阀腔进行轴向升降运动以接近或远离阀口。
本发明提供的电子膨胀阀取消了背景技术中的减速齿轮装置及其他复杂零部件，通过丝杆台阶部与支撑架的配合以及丝杆直接或间接地与外壳的配合作用对丝杆在轴向方向进行限位，在电子膨胀阀进行作动时丝杆和转子始终保持在周向方向的旋转状态，产品整体结构较为简单。
附图说明
图1为一种典型的电子膨胀阀结构示意图；
图2为本发明提供电子膨胀阀的第一种具体实施例的示意图；
图3是本发明提供电子膨胀阀的支撑架结构示意图；
图4为本发明提供电子膨胀阀的第二种具体实施例的示意图；
图5为本发明提供电子膨胀阀的第三种具体实施例的示意；
图6为本发明提供电子膨胀阀的第四种具体实施例的示意。
具体实施方式
为了使本领域的技术人员更好地理解本发明的技术方案，下面结合附图和具体实施例对本发明作进一步的详细说明，需要说明的是说明书中所提供的实施例的说明仅仅为本发明所提供的电子膨胀阀的优选实施例方案的说明内容，并不包含所有实施例的说明，若有其他相关合理拓展的实施例方案也应该被纳入本发明所要保护的范围。
请参考图2，图2是本发明所提供电子膨胀阀的第一种具体实施例的示意图，该电子膨胀阀包括阀体10，阀体10大致呈筒状结构形成有阀腔，阀体10开设有阀口101，该阀口101与芯体组件60相配合，另该电子膨胀阀结构中也可以设置阀座20，阀体10和阀座20可以作为单独的部件，装配时将阀体10与阀座20焊接固定，阀口101可以设置于阀座20，阀体10的侧壁通过冲压等加工方式开设有第一连接口，阀体10的下端部开设有第二连接口，该第一连接口焊接固定有第一连接接管100，该第二连接口焊接固定有第二连接接管200，第一连接接管100与第二连接接管200通过阀口101进行导通，冷媒能够从第一连接接管100进入阀腔后经阀口101由第二连接接管200流出或冷媒能够从第二连接接管200进入阀腔后经阀口101由第一连接接管100流出，该电子膨胀阀具有对冷媒的双向流通调节功能。
阀体10的上端部位置焊接固定有连接座30，连接座30包括连接座本体31、导向壁32以及突起部33，连接座30还开设有导向孔321，连接座本体31压配装入阀腔后与阀体10焊接固定使连接座30整体固定安装于阀体10，具体地，连接座本体31的外周壁与阀体10的内周壁焊接固定，导向壁32伸入阀腔，芯体组件60的至少一部分能够通过该导向孔321伸入阀腔并能够沿导向孔321进行轴向升降运动，连接座本体31设置有第一台阶部311，第一台阶部311形成第一台阶面3111，突起部33设置有第二台阶部331，第二台阶部331焊接固定有外壳90，需要说明的是连接座30也可以与阀体10为一体结构，当连接座30与阀体10为一体结构时外壳90也可以与阀体10固定连接，即外壳90可以间接通过连接座30与阀体10固定连接，也可以直接与阀体10进行固定连接。
该外壳90与连接座30一起形成有转子腔，该转子腔容纳有转子组件40，转子组件40包括转子41以及丝杆44，转子41整体为大约呈H状的磁性部件，转子41具有转子凸起411，丝杆44设有丝杆凹槽部442，转子凸起411与丝杆凹槽部442抵接配合，转子41与丝杆44为一体注塑成型结构，当转子41进行旋转时，因丝杆44与转子41为一个整体结构丝杆也随从旋转，丝杆44还设有丝杆台阶部441以及丝杆安装孔444，该丝杆台阶部441与支撑架50相抵，丝杆安装孔444与转轴43相适配，电子膨胀 阀还包括固定座42，固定座42整体压配装入外壳90的内腔与外壳90进行固定连接，固定座42位于转子41的上方且作为一个独立的部件不与转子41发生干涉，固定座42具有引导部421，引导部421形成能够与转轴43相适配的引导孔4211，转轴43的一端与引导孔4211相适配，该转轴43的一端与引导孔4211之间为间隙配合；转轴43的另一端与丝杆安装孔444相适配，转轴43的另一端与丝杆安装孔444可以为间隙配合也可以为紧配方式，弹簧部件80设套于转轴43的外周部，弹簧部件80的一端与引导部底壁4213相配合抵接，另一端与丝杆44的丝杆端部443相配合抵接，一方面丝杆44通过丝杆台阶部441与支撑架50的端部台面511的配合作用在电子膨胀阀作动时限制丝杆44的轴向向下位移，另一方面丝杆44通过固定座42、转轴43以及套设于转轴43外周部的弹簧部件80间接地与外壳相配合抵接，通过弹簧部件80分别与丝杆端部443以及引导部底壁4213进行配合抵接防止丝杆44轴向向上的位移，在电子膨胀阀作动过程中使丝杆44始终保持在周向方向的旋转运动。
下面简单陈述在作动过程中弹簧部件80的作用，当阀头622与阀口101抵接配合即闭阀状态后，丝杆44会受系统持续传递给线圈脉冲的作用继续向下关闭阀口101，固定的阀口101此时对阀头622形成反作用力使阀针62产生向上位移的趋势，会使丝杆台阶部441脱离支撑架50的端部台面511产生轴向向上的位移，位于丝杆端部443与引导部底壁4213之间设置的弹簧部件80抵消该反作用力对丝杆施加向下的作用力使丝杆台阶部441始终保持与端部台面511的抵接状态，使阀针62处于上下受力平衡状态，需要说明的这里将弹簧部件80的弹力设置为远大于线圈所能产生的驱动力以确保阀针622处于上下受力平衡状态，阀头622始终保持与阀口101的抵接，需要开阀时，因弹簧部件80的端面与丝杆端部443的端面滑动，弹簧部件80本身不进行自锁，阀针62受驱动力作用仅需克服弹簧部件80的端面与丝杆端部443的端面之间的较小的摩擦力即可实现开启动作。
如图3所示电子膨胀阀还包括支撑架50，支撑架50包括上支撑架51和下支撑架52，支撑架50与连接座30焊接固定，具体地，通过下支撑架52的外周壁与突起部33的内周壁焊接固定使支撑架50整体固定安装于连 接座30，支撑架50通过连接座30与阀体10固定连接，当连接座30与阀体10为一体结构时，支撑架50则直接与阀体10焊接固定，支撑架50可以直接或间接地与阀体10进行焊接固定。下支撑架52的壁部开设有配合槽53，该配合槽53与螺母61进行配合以对芯体组件60的周向位置进行限位防止芯体组件60在周向方向发生旋转运动，支撑架50还开设有与丝杆44配合的限位孔54，丝杆44穿过该限位孔54与芯体组件60进行配合，上支撑架51具有端部台面511，具体地该端部台面511为上支撑架51的端面部，端部台面511与丝杆台阶部441配合抵接以防止丝杆44轴向向下的串动。
电子膨胀阀还包括有芯体组件60，芯体组件60包括螺母61以及阀针62，螺母61包括螺母本体611，螺母本体611压配装入阀针腔621，螺母61包括连接片612，螺母本体611与连接片612可以都为金属材质，当同为金属材质时，连接片612与螺母本体611焊接固定，当螺母本体611为塑料材质连接片为金属材质时，该连接片612与螺母本体611一体注塑成型，这里不对螺母61或连接片612的具体材质作限定，螺母61还包括有配合部613，该配合部613由螺母本体611向外延伸凸出，螺母61通过连接片612的下端面与阀针62的端面部焊接固定从而整体与阀针62固定连接，螺母本体611开设有螺母安装孔614供丝杆44穿过，且螺母61设有与丝杆44的外螺纹部44a进行螺纹连接的内螺纹部60a，通过丝杆44与螺母61的螺纹配合作用将丝杆44的旋转运动转化为芯体组件60的轴向升降运动，配合部613能够卡合于配合槽53，受支撑架50的卡合作用芯体组件60整体只能轴向升降不能进行周向旋转运动，需要说明的是支撑架50同时起到对丝杆44在轴向位置的限位作用以及对芯体组件60在周向位置的限位作用。阀针61整体呈中空大约等径筒状结构，包括阀头622和阀针本体623，阀头622由芯体组件60的轴向升降运动接近或远离阀口101以对流经阀口101的冷媒流量进行调节，阀针本体623的外壁与导向壁32之间为间隙配合，阀针本体623通过导向孔321伸入阀腔且阀针本体623能够沿导向壁32进行轴向移动，连接座30的导向壁32对阀针62提供导向作用使阀针62与阀口101的中心轴线保持同轴度以提高电子膨胀阀作动时的稳定和可靠性。
为使电子膨胀阀进行作动时阀针腔621、阀腔以及转子腔三者的压力平衡还设有密封件70，如图1所示的闭阀状态时，阀头622与阀口101进行抵接，如冷媒从第二连接接管200进入阀体10内部则芯体组件60连同丝杆44等部件将受到一定的冷媒压力冲击，如没有设置该密封件70较高压力的冷媒将直接冲开阀口部101使阀头622脱离阀口101而达不到闭阀效果同时对丝杆44也同样具有一定的冲击力，具体地，该密封件70包括垫圈、O型橡胶圈以及压片，该密封件70也可以只包括O型橡胶圈以及压片，密封件70位于第二台阶面3111与下支撑架52的下端部之间，垫圈或O型橡胶圈与第二台阶面3111进行抵接配合，压片压配装入突起部30内部以固定O型橡胶圈。
下面结合简单陈述电子膨胀阀作动原理，转子组件40由励磁作用驱动转子41的旋转，丝杆44随从进行周向旋转，由丝杆44的外螺纹部44a与螺母61的内螺纹部60a的螺纹配合作用，芯体组件60进行轴向升降运动并且配合部613也沿配合槽53进行轴向升降运动从而使阀头622接近或远离阀口101调节流经阀口101的冷媒流量，当阀头622与阀口101进行配合抵接时，配合部613相对靠近配合槽53的下方，当阀头622远离阀口101时，配合部613相对靠近配合槽53的上方，当阀头622距离阀口101最远时，配合部613可以抵接下支撑架52的顶壁面521。该电子膨胀阀结构取消了背景技术中的齿轮减速机构以及轴承等其他复杂的零部件构造，只需通过支撑架50通过端部台面511和丝杆台阶部441的配合作用对丝杆44的轴向向下位移进行限位，弹簧部件80分别与引导部底壁4213以及丝杆端部443的配合作用对丝杆的轴向向上位移进行限位，进一步确保丝杆44以及转子41只在周向保持旋转运动而无法在轴向进行上下位移作动，简化了产品整体的装配结构，转子41和丝杆44始终保持在周向的旋转运动而不进行位移使产品轴向上的尺寸缩减便于实现产品整体结构的小型化进一步降低制造成本，另转子41在电子膨胀阀作动过程中保持周向旋转，对于外壳部9外周部安装固定的线圈驱动装置也可缩减其尺寸，因转子41的中心轴保持与线圈驱动部的中心轴吻合能够充分发挥转子41的磁力作用从而进一步减小作动过程中所需的驱动力，位于丝杆44下方的芯体组件60受支撑架50的配合槽53与配合部613的卡合作用无法进行周向旋转只 能在丝杆44的带动下进行轴向升降运动，电子膨胀阀受线圈励磁作用后逐渐将丝杆44的旋转运动通过外螺纹部44a与内螺纹部60a的螺纹配合作用直接转化为芯体组件60沿导向壁32的升降运动以调节流经阀口101的冷媒流量，该电子膨胀阀结构属于直动式的驱动方式，对比背景技术即使是较小的驱动力也能顺利实现开阀和闭阀并能保持流量调节的精度，而不需要借助复杂的减速齿轮机构通过增大减速比来控制流量的调节精度以及开闭阀。
如图4所示为本发明提供电子膨胀阀的第二种具体实施示意图，与第一实施例相比较该实施例取消了弹簧部件80，固定座42的引导部端部4212与顶壁91进行配合抵接，转轴端部431与顶壁91进行配合抵接，固定座42具有引导部421，该引导部421开设有引导孔4211，转轴43与引导孔4211相适配，引导部421对转轴43提供导向作用，该转轴43的一端与引导孔4211相适配，另一端嵌入丝杆安装孔444中，丝杆44通过转轴43以及固定座42与外壳90进行间接配合抵接，通过转轴端部431以及引导部端部4212分别与顶壁91的抵接配合对丝杆44的轴向向上运动进行限位，支撑架50的端部台面511与丝杆台阶部441抵接配合以对丝杆44的轴向向下运动进行限位，使丝杆44连同转子41在电子膨胀阀作动过程中始终保持在周向方向的旋转运动而无法进行轴向升降运动。其他相关作动原理已在第一实施方式进行具体陈述在此不再一一赘述。
如图5所示为本发明提供电子膨胀阀的第三种具体实施方式，固定座42与外壳90固定连接，引导部端部4212与顶壁91相配合抵接，转轴43的一端与引导孔4211配合，另一端嵌入丝杆安装孔444，丝杆端部443与引导部底壁4213相抵接配合，丝杆44通过固定座42与转轴43与外壳90间接进行配合抵接，通过丝杆端部443与引导部底壁4213的相配合抵接以对丝杆44轴向向上移动进行限位，支撑架50的端部台面511与丝杆台阶部441相抵接配合以对丝杆44轴向向下移动进行限位使丝杆44连同转子41在电子膨胀阀作动时始终保持在周向旋转而无法进行轴向升降运动。
如图6所示为本发明提供的电子膨胀阀的第四种具体实施方式，该实施例中丝杆44的丝杆端部443与外壳90的顶壁91进行抵接配合即丝杆44通过与外壳90的直接配合抵接以对丝杆44的轴向向上位移进行限位， 进一步地结合支撑架50的端部台面511与丝杆台阶部441的抵接配合以防止丝杆44的轴向向下位移使丝杆44连同转子41始终无法进行轴向升降运动。
本发明所涉及的“上、下、中、内、外”等方位词的描写仅仅为了方便描述而引入，不能被认为是对本发明所涉及描述各部件的顺序的限定。
本发明提供的电子膨胀阀，通过支撑架与丝杆的配合以及丝杆直接或间接地与外壳部件的配合对丝杆以及转子在轴向方向进行限位，使丝杆和转子在电子膨胀阀作动时始终保持周向旋转而无法进行轴向升降运动，并且将丝杆的旋转运动通过螺纹配合作用直接转化为芯体组件在轴向方向的升降运动，该电子膨胀阀产品取消了减速齿轮机构及其他复杂零部件构造，整体结构相对简单，转子和丝杆保持在周向方向的旋转无法位移缩减了产品的轴向尺寸，而外壳外部的驱动线圈装置也可缩减成小驱动力的尺寸从而进一步实现整体结构的小型化降低了产品的制造成本。
以上仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明远离的前提下，还可以做出若干改进和润饰，这些改进和润饰也应当视为本发明的保护范围。

Claims (9)

  1. 一种电子膨胀阀，其特征在于，包括：
    阀体(10)，所述阀体(10)包括阀腔及阀口(101)；
    外壳(90)，所述外壳(90)与阀体(10)直接或间接地固定连接；
    转子组件(40)，所述转子组件(40)包括转子(41)及丝杆(44)，所述丝杆(44)设有外螺纹部(44a)及丝杆台阶部(441)，所述丝杆(44)能够直接或间接地与所述外壳(90)抵接配合；
    支撑架(50)，所述支撑架(50)与所述阀体(10)直接或间接地固定连接，所述支撑架(50)具有端部台面(511)，所述端部台面(511)与所述丝杆台阶部(441)配合；
    芯体组件(60)，所述芯体组件(60)包括螺母(61)，所述螺母(61)具有与所述外螺纹部(44a)相配合的内螺纹部(60a)，通过所述外螺纹部(44a)与所述内螺纹部(60a)的螺纹配合作用，所述芯体组件(60)能够在所述阀腔进行轴向升降运动以接近或远离所述阀口(101)。
  2. 根据权利要求1所述的电子膨胀阀，其特征在于，所述电子膨胀阀包括固定座(42)，所述固定座(42)压配装入所述外壳(90)的内腔，所述固定座(42)具有引导部(421)，所述引导部(421)形成引导孔(4211)。
  3. 根据权利要求2所述的电子膨胀阀，其特征在于，所述电子膨胀阀还包括转轴(43)，所述转轴(43)的一端与所述引导孔(4211)配合，所述转轴(43)的另一端与所述丝杆(44)的丝杆安装孔(444)配合。
  4. 根据权利要求3所述的电子膨胀阀，其特征在于，所述转轴(43)的外周部套设有弹簧部件(80)，所述弹簧部件(80)的一端与所述引导部 (421)的引导部底壁(4213)抵接配合，所述弹簧部件(80)的另一端与所述丝杆(44)的丝杆端部(443)抵接配合，所述弹簧部件(80)的弹力大于线圈所产生的驱动力。
  5. 根据权利要求3所述的电子膨胀阀，其特征在于，所述引导部(421)的引导部端部(4212)与所述外壳(90)的顶壁(91)抵接配合，所述转轴(43)的转轴端部(431)与所述顶壁(91)抵接配合。
  6. 根据权利要求3所述的电子膨胀阀，其特征在于，所述引导部(421)的引导部端部(4212)与所述外壳(90)的顶壁(91)抵接配合，所述丝杆(44)的丝杆端部(443)与所述引导部(421)的引导部底壁(4213)抵接配合。
  7. 根据权利要求1所述的电子膨胀阀，其特征在于，所述丝杆(44)的丝杆端部(443)与所述外壳(90)的顶壁(91)抵接配合。
  8. 根据权利要求1-7任意一项所述的电子膨胀阀，其特征在于，所述支撑架(50)设有配合槽(53)以及限位孔(54)，所述螺母(61)具有配合部(613)，所述配合部(613)与所述配合槽(53)配合。
  9. 根据权利要求8所述的电子膨胀阀，其特征碍于，所述支撑架(50)包括上支撑架(51)及下支撑架(52)，所述上支撑架(51)具有所述端部台面(511)，所述端部台面(511)与所述丝杆台阶部(441)配合抵接，所述下支撑架(52)开设所述配合槽(53)，所述配合部(613)能够与所述下支撑架(52)的顶壁面(521)抵接。
PCT/CN2019/079232 2018-03-23 2019-03-22 电子膨胀阀 WO2019179518A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020207029022A KR102445410B1 (ko) 2018-03-23 2019-03-22 전자 팽창 밸브
JP2020547327A JP7127142B6 (ja) 2018-03-23 2019-03-22 電子膨張弁

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810244337.5A CN110296266B (zh) 2018-03-23 2018-03-23 电子膨胀阀
CN201810244337.5 2018-03-23

Publications (1)

Publication Number Publication Date
WO2019179518A1 true WO2019179518A1 (zh) 2019-09-26

Family

ID=67988197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/079232 WO2019179518A1 (zh) 2018-03-23 2019-03-22 电子膨胀阀

Country Status (4)

Country Link
JP (1) JP7127142B6 (zh)
KR (1) KR102445410B1 (zh)
CN (1) CN110296266B (zh)
WO (1) WO2019179518A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023151858A1 (en) * 2022-02-14 2023-08-17 Danfoss A/S Rotor tube assembly for a fluid valve actuator and method for assembling a rotor tube assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6945504B2 (ja) * 2018-06-19 2021-10-06 株式会社鷺宮製作所 電動弁および冷凍サイクルシステム
CN114838186B (zh) * 2021-02-01 2023-06-02 浙江三花智能控制股份有限公司 一种电动阀

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934426A (en) * 1973-08-13 1976-01-27 Danfoss A/S Thermostatic expansion valve for refrigeration installations
CN201934686U (zh) * 2010-12-07 2011-08-17 居琴 电子膨胀阀的阀座连接结构
CN203009981U (zh) * 2012-12-25 2013-06-19 浙江三花股份有限公司 一种电子膨胀阀
CN203686165U (zh) * 2014-01-17 2014-07-02 浙江盾安禾田金属有限公司 一种大型电子膨胀阀
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

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000220757A (ja) 1999-02-02 2000-08-08 Chiyoda Kucho Kiki Kk 電動式コントロールバルブ
EP1069366A1 (en) * 1999-07-16 2001-01-17 S.K.G. Italiana S.p.A. Pipe connection device for a thermostatic expansion valve
JP2001343083A (ja) 2000-05-31 2001-12-14 Saginomiya Seisakusho Inc 電動式コントロールバルブ
KR20020000089A (ko) * 2000-06-21 2002-01-04 이충전 양방향 제어기능을 갖는 전자 팽창 밸브
JP4220178B2 (ja) * 2001-09-03 2009-02-04 株式会社鷺宮製作所 電動弁
US7128032B2 (en) * 2004-03-26 2006-10-31 Bose Corporation Electromagnetic actuator and control
JP4947924B2 (ja) 2005-06-13 2012-06-06 株式会社不二工機 電動弁
CN101956830B (zh) 2009-07-17 2013-06-12 浙江三花股份有限公司 电子膨胀阀
CN104132149B (zh) * 2013-05-02 2017-09-01 浙江三花智能控制股份有限公司 一种电动阀
EP3343080A1 (en) * 2014-01-20 2018-07-04 Zhejiang Sanhua Climate & Appliance Controls Group Co., Ltd. Direct-action-type electrically-operated valve and assembly method therefore
CN104791544A (zh) * 2014-01-20 2015-07-22 浙江三花股份有限公司 一种直动式电动阀及其装配方法
CN106286936B (zh) * 2015-06-25 2019-12-03 浙江盾安禾田金属有限公司 电子膨胀阀
CN205937059U (zh) * 2016-08-03 2017-02-08 沈阳双环泵业有限公司 隔膜两侧压差监测保护装置
CN206647602U (zh) * 2017-04-21 2017-11-17 浙江三花智能控制股份有限公司 一种电子膨胀阀及其螺母
CN207122587U (zh) * 2017-09-13 2018-03-20 浙江三花制冷集团有限公司 一种电子膨胀阀

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934426A (en) * 1973-08-13 1976-01-27 Danfoss A/S Thermostatic expansion valve for refrigeration installations
CN201934686U (zh) * 2010-12-07 2011-08-17 居琴 电子膨胀阀的阀座连接结构
CN203009981U (zh) * 2012-12-25 2013-06-19 浙江三花股份有限公司 一种电子膨胀阀
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
CN203686165U (zh) * 2014-01-17 2014-07-02 浙江盾安禾田金属有限公司 一种大型电子膨胀阀

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023151858A1 (en) * 2022-02-14 2023-08-17 Danfoss A/S Rotor tube assembly for a fluid valve actuator and method for assembling a rotor tube assembly

Also Published As

Publication number Publication date
KR102445410B1 (ko) 2022-09-20
JP2021516317A (ja) 2021-07-01
JP7127142B2 (ja) 2022-08-29
CN110296266A (zh) 2019-10-01
JP7127142B6 (ja) 2022-09-16
CN110296266B (zh) 2021-08-27
KR20200128568A (ko) 2020-11-13

Similar Documents

Publication Publication Date Title
WO2019179516A1 (zh) 电子膨胀阀
WO2019179518A1 (zh) 电子膨胀阀
KR101303536B1 (ko) 전동 밸브
WO2019179517A1 (zh) 电子膨胀阀
WO2015106724A1 (zh) 一种直动式电动阀及其装配方法
JP2898906B2 (ja) 電動流量制御弁
JP4713934B2 (ja) 電動弁
JP5716980B2 (ja) 電動弁
JP2018003899A (ja) 電動弁
JP2006316835A (ja) 電動式コントロールバルブ
CN109751428B (zh) 电子膨胀阀
KR20070096792A (ko) 전동 밸브
CN110296267B (zh) 电子膨胀阀
JP2016133156A (ja) 電動弁
JP5424919B2 (ja) 電動弁
CN110296222B (zh) 电子膨胀阀
CN109723830B (zh) 电子膨胀阀及具有其的制冷系统
JP2006292148A (ja) 電動弁
WO2019148693A1 (zh) 一种电动阀及其制造方法
JP5773834B2 (ja) 電動弁
CN113446405A (zh) 电子膨胀阀
JP7493257B2 (ja) 電動弁
JP7438565B2 (ja) 電動弁
CN110939745B (zh) 一种电子膨胀阀
JP2007032675A (ja) 電動弁

Legal Events

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

Ref document number: 19770850

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020547327

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20207029022

Country of ref document: KR

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 19770850

Country of ref document: EP

Kind code of ref document: A1