WO2020038380A1 - 电子膨胀阀 - Google Patents
电子膨胀阀 Download PDFInfo
- Publication number
- WO2020038380A1 WO2020038380A1 PCT/CN2019/101670 CN2019101670W WO2020038380A1 WO 2020038380 A1 WO2020038380 A1 WO 2020038380A1 CN 2019101670 W CN2019101670 W CN 2019101670W WO 2020038380 A1 WO2020038380 A1 WO 2020038380A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- valve seat
- electronic expansion
- core
- assembly
- Prior art date
Links
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 239000003507 refrigerant Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000000306 component Substances 0.000 description 18
- 238000001595 flow curve Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 8
- 238000004378 air conditioning Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- 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
- F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
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- 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
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
- F16K39/022—Devices for relieving the pressure on the sealing faces for lift valves using balancing surfaces
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- 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 present application relates to the technical field of air conditioning and refrigeration equipment, and in particular, to an electronic expansion valve.
- Electronic expansion valve is an important component in air-conditioning refrigeration system, which mainly plays the role of throttling and reducing pressure and flow regulation.
- the flow adjustment of the general electronic expansion valve is mainly determined by the flow adjustment surface of the valve head part and the valve seat core diameter. Therefore, products with different flow requirements need to separately produce valve head parts and valve seat cores of different specifications, the versatility of the parts is poor, the production cost is high, and it is not conducive to improving production and assembly efficiency.
- valve head components can be matched with valve seat cores of different specifications to achieve different flow adjustment effects and low production costs. Electronic expansion valve with high assembly efficiency and wide application prospect.
- An electronic expansion valve includes a valve seat assembly and a valve core assembly, and the valve core assembly is installed in the valve seat assembly;
- the valve seat assembly includes a valve seat, a valve seat core, and a guide sleeve, the valve seat has a valve cavity open at one end, is installed at the other end of the valve seat, and the guide sleeve is installed on the valve seat;
- the valve seat core is provided with a penetrating conducting portion, and one end of the conducting portion near the guide sleeve has a flow regulating surface inclined outwardly in a circumferential direction;
- the valve core assembly includes a valve head, the valve head is slidably installed in the guide sleeve, and a matching end of the valve head and the valve seat core has a sealing surface to drive the valve head toward / away from the valve head.
- the valve seat core moves to adjust the gap between the flow adjustment surface and the sealing surface to control the flow of the refrigerant.
- an end of the conducting portion near the guide sleeve has a flow guide opening, and an opening diameter of the flow guide opening gradually increases along a direction in which the valve seat core faces the guide sleeve, so that The inner wall of the diversion port is formed with the flow adjustment surface inclined outwardly.
- the opening angle of the diversion port is ⁇
- the hole diameter of the conducting portion is A
- the A increases as the ⁇ increases.
- an abutting portion is formed in an end of the valve seat core near the guide sleeve in a radial direction, and the valve seat is provided with a mounting hole communicating with the valve cavity.
- the valve seat core One end is penetrated in the mounting hole, and the abutting portion is abutted on the valve seat.
- the valve core assembly further includes a screw rod and a spring.
- the valve head is provided with a connection hole, one end of the screw rod is installed in the connection hole, and the spring is sleeved on the wire. A rod, and one end of the spring abuts against the screw rod, and the other end is received in the connection hole.
- an inner wall of the connection hole has a flange protruding inward, and a washer is provided on the screw rod.
- One end of the spring abuts against the washer and the other end abuts against the flange.
- valve core assembly further includes a limiting sleeve, the limiting sleeve is accommodated in the connecting hole and can cooperate with the flange to form a limiting position, and one end of the screw rod passes through The flange is connected to the limiting sleeve.
- the washer and the spring are located on one side of the flange, the limiting sleeve is located on the other side of the flange, and an outer diameter of the limiting sleeve is larger than the convex diameter.
- the inner diameter of the edge is larger than the convex diameter.
- valve core assembly further includes a sealing ring sleeved on an outer wall of the valve head, for sealing a gap between the outer wall of the valve head and the inner wall of the guide sleeve.
- the electronic expansion valve further includes the nut assembly and a rotor, the nut assembly is installed at an end of the valve seat far from the valve seat core, and the screw rod is far from the valve seat core.
- One end is threaded and threadedly connected to the nut component, and is connected to the rotor.
- the nut assembly includes a nut seat and a fixing piece.
- the fixing piece is annular. An inner peripheral edge of the fixing piece is connected to the nut seat. An outer peripheral edge of the fixing piece is connected to one end of the guide sleeve.
- the electronic expansion valve further includes a sleeve, one end of the sleeve is mounted on the guide sleeve, and the nut assembly and the rotor are housed in the sleeve.
- the electronic expansion valve is provided with a flow regulating surface on the valve seat core, that is, the valve seat core integrates the conducting portion and the flow regulating surface into one body.
- the valve seat core integrates the conducting portion and the flow regulating surface into one body.
- Components so as to adjust the gap between the sealing surface on the valve head and the flow regulating surface on the valve seat core, the adjustment without the flow curve can be achieved, which not only has good versatility, low production and processing costs, but also has a wide application prospect ;
- the valve head and the guide sleeve are independent, that is, they can be set separately, which improves the versatility of the spool assembly, and the spool assembly can be recycled separately, which further effectively reduces the production cost.
- FIG. 2 is a schematic partial cross-sectional view of an electronic expansion valve provided by the present application.
- FIG. 3 is a perspective sectional view of the electronic expansion valve shown in FIG. 2 provided in the present application.
- FIG. 4 is a schematic cross-sectional view of a valve seat core in the electronic expansion valve shown in FIG. 3 provided by the present application.
- FIG. 5 is a perspective sectional view of a valve seat core in the electronic expansion valve shown in FIG. 3 provided by the present application.
- FIG. 6 is a perspective sectional view of a valve core assembly in the electronic expansion valve shown in FIG. 5 provided by the present application.
- 100 indicates an electronic expansion valve
- 10 indicates a valve seat assembly
- 11 indicates a valve seat
- 11a indicates a valve cavity
- 111 indicates a mounting hole
- 12 indicates a valve seat core
- 121 indicates a conducting portion
- 121a indicates a flow regulating surface
- 122 indicates Abutment
- 123 is the guide port
- 13 is the guide sleeve
- 14 is the first pipe
- 15 is the second pipe
- 20 is the spool assembly
- 21 is the valve head
- 21 is the sealing surface
- 22 is the seal ring
- 23 is the Screw rod
- 24 is a washer
- 25 is a spring
- 26 is a limit sleeve
- 27 is a flange
- 30 is a nut assembly
- 31 is a nut seat
- 32 is a fixed piece
- 40 is a rotor
- 50 is a sleeve.
- a component when a component is called “installed on” another component, it may be directly on another component or a centered component may exist. When a component is considered to be “set on” another component, it can be directly set on another component or a centered component may exist at the same time. When a component is considered to be “fixed” to another component, it may be fixed directly to another component or there may be a centered component at the same time.
- an electronic expansion valve 100 As shown in FIG. 1 to FIG. 3, an electronic expansion valve 100 according to a preferred embodiment of the present application.
- the electronic expansion valve 100 can be applied to an air conditioning system, and is used for throttling, reducing the pressure of a refrigerant, and adjusting the flow rate of the refrigerant. .
- the electronic expansion valve 100 includes a valve seat assembly 10 and a valve core assembly 20, and the valve core assembly 20 is installed in the valve seat assembly 10.
- the valve seat assembly 10 includes a valve seat 11, a valve seat core 12, and a guide sleeve 13.
- the valve seat 11 has a valve cavity 11 a open at one end, and the valve seat core 12 is installed at the other end of the valve seat 11. And partially contained in the valve cavity 11, the guide sleeve 13 is received in the valve cavity 11 a and overlapped with the edge of the opening, so that the guide sleeve 13 is installed on the valve seat 11.
- the valve seat core 12 is provided with a conducting portion 121 therethrough, which is also referred to as a valve port.
- An end of the conducting portion 121 near the guide sleeve has a flow adjustment surface 121a disposed obliquely outwardly in the circumferential direction.
- a mating end 21a of the valve core assembly 20 and the seat core 12 has a sealing surface 21a.
- the valve seat core 12 moves to adjust the gap between the flow adjustment surface 121a and the sealing surface 21a to control the flow rate of the refrigerant, thereby realizing the adjustment of the refrigerant flow rate of the electronic expansion valve, and the adjustment of the refrigerant. Throttle and buck.
- An end of the conducting portion 121 near the guide sleeve is provided with a guide opening 123, and an opening diameter of the guide opening 123 is gradually increased along the direction of the valve seat core 12 toward the guide sleeve 13 so that The inner wall of the diversion port 123 forms the flow adjustment surface 121a which is disposed obliquely outward.
- the cross section of the diversion port 123 along the axial direction thereof is provided in an inverted cone shape.
- the opening angle of the diversion port 123 is denoted by ⁇ in the axial direction, and the diameter of the end of the conducting portion 121 away from the diversion port 123 is denoted by A.
- the relationship is that A increases with ⁇ .
- the flow adjustment of the electronic expansion valve is mainly determined by the opening angle of the diversion port 123 (that is, the flow adjustment surface 121a) and the aperture of the conducting portion 121.
- the opening angle determines the slope of the flow rate curve
- the aperture of the conducting portion 121 determines the maximum value of the flow rate curve.
- valve core assembly 20 is provided with a flow regulating surface, which will make the diameter of the valve core assembly 20 larger The minimum diameter of the guide sleeve, so that the valve core component cannot be installed from the guide sleeve from top to bottom, and the assembly is very inconvenient.
- the flow regulating surface and the conducting portion 121 are provided on the same valve seat core 12, and during use, only a different valve seat core 12 needs to be replaced to obtain an unused flow curve. , Not only good versatility, low production and processing costs, and easy assembly, has a wide range of application prospects.
- the opening angle of the diversion port 123 is denoted by ⁇
- the diameter of the end of the conducting portion 121 away from the diversion port 123 is denoted by A.
- A is a constant value, which does not follow ⁇ changes. That is, the maximum value of the flow curve is a fixed value, and the value of ⁇ is changed to obtain the flow curve of the slope of the flow curve.
- an abutment portion 122 is formed in an end of the valve seat core 12 near the guide sleeve 13 in a radial direction, and the valve seat 11 is provided with a mounting hole 11b communicating with the valve cavity 11a.
- One end of the seat core 12 is penetrated in the mounting hole 11b, and the abutting portion 122 is abutted on the valve seat 11, that is, abutted on the bottom of the valve cavity 11a, thereby realizing the seat core 12 installation.
- valve seat 11 is connected to the first pipe 14 and the second pipe 15 for conveying the refrigerant.
- the first pipe 14 is sleeved on the valve seat 11 where the valve seat core 12 is installed.
- the first pipe 14 and the valve seat core The conducting portion 121 on 12 is provided in communication;
- the second pipe 15 is installed on the outer side wall of the valve seat 11 and is provided in communication with the valve cavity 11a.
- the refrigerant enters the valve cavity 11 a through the second pipe 15, and flows out of the first pipe 14 after being throttled, depressurized, and adjusted by the conducting portion 121. That is, by controlling the on / off of the conducting portion 121, the on / off between the first pipe 14 and the second pipe 15 can be achieved.
- the valve core assembly 20 includes a valve head 21 which is slidably installed in the guide sleeve 13, and the valve head 21 is close to one end of the valve seat core 12. With the sealing surface 21a, the valve head 21 is driven to move toward / away from the valve seat core 12 to adjust the gap between the flow adjustment surface 121a and the sealing surface 21a, thereby realizing the flow of the electronic expansion valve 100. Adjustment.
- valve head 21 is arranged coaxially with the valve seat core 12.
- valve core assembly 21 further includes a screw rod 23 and a spring 25.
- the valve head 21 is provided with a connection hole 211.
- One end of the screw rod 23 is installed in the connection hole 211, and the spring 25 is sleeved.
- One end of the spring 25 abuts the screw rod 23, and the other end is received in the connection hole 211.
- the screw rod 23 moves and compresses the spring 25, so that the valve head 21 is brought closer to the valve seat core 12 under the force of the spring 25.
- the inner wall of the connection hole 211 has a flange 27 protruding inward, a washer 24 is provided on the screw rod 23, one end of the spring 25 abuts on the washer 24, and the other end abuts on the flange 27.
- a washer 24 is provided on the screw rod 23
- one end of the spring 25 abuts on the washer 24, and the other end abuts on the flange 27.
- valve core assembly 20 further includes a limit sleeve 26, which is received in the connection hole 211 and can cooperate with the flange 27 to form a limit.
- a limit sleeve 26 is received in the connection hole 211 and can cooperate with the flange 27 to form a limit.
- One end of the screw rod 23 Perforated on the flange 27 and connected to the limiting sleeve 26 to achieve the purpose of restricting the lead screw 23 from detaching from the valve head 21.
- the washer 24 and the spring 25 are located on a side of the flange 27 away from the valve seat core 12, and the limit sleeve 26 is located on a side of the flange 27 near the valve core 12, so The outer diameter of the limiting sleeve 26 is greater than the inner diameter of the flange 27, that is, the limiting sleeve 26 can abut against the flange 27.
- valve core assembly 20 when the electronic expansion valve 100 is assembled, the valve core assembly 20 can be assembled first, and the valve core assembly 20 is routed from one end of the guide sleeve 13 by using a separate design of the valve head 21 and the guide sleeve 13. For finished product assembly. When the internal leakage of the product is detected badly, the spool assembly 20 can be disassembled and recovered separately, further reducing the production cost and improving the versatility of the spool assembly 20.
- valve core assembly 20 further includes a sealing ring 22, which is sleeved on the outer wall of the valve head 21 and is used to seal the outer wall of the valve head 21 and the inner wall of the guide sleeve 13. Gap.
- the electronic expansion valve 100 further includes the nut assembly 30 and a rotor 40.
- the nut assembly 30 is mounted on an end of the valve seat 11 away from the valve seat core 12, and the screw rod 23 is far away from the valve seat core 12.
- One end of the valve seat core 12 is threaded and connected to the nut assembly 30 and is connected to the rotor 40.
- the rotor 40 drives the screw rod 23 to rotate, and the threaded rod 23 nut assembly 30 thread side effect converts the rotation into the linear motion of the screw rod 23, so that the screw rod 23 drives the valve head 21 to move toward / away from the valve seat core 12 to realize the electronic expansion valve 100. On / off, etc.
- the nut assembly 30 includes a nut seat 31 and a fixing piece 32.
- the fixing piece 32 is ring-shaped. An inner peripheral edge of the fixing piece 32 is connected to the nut seat 31 and an outer peripheral edge of the fixing piece 32. It is connected to the guide sleeve 13 so as to realize the installation and positioning of the nut assembly 30.
- the rotor 40 is located at an end of the nut group 31 away from the guide sleeve 13 and is fixedly connected to the screw rod 23.
- the electronic expansion valve 100 further includes a sleeve 50.
- One end of the sleeve 50 is mounted on the guide sleeve 13, and the nut assembly 30 and the rotor 40 are received in the sleeve. Inside the tube 50, protection of the rotor 40 and the nut assembly 30 is achieved through the sleeve 50.
- the sleeve 50 is welded to the guide sleeve 13.
- the valve seat core 12 integrates the conducting portion 121 and the flow regulating surface 121a into one body, and only needs to replace the valve seat core when facing different use environments.
- This component is used to adjust the gap between the sealing surface 21a on the valve head 21 and the flow adjustment surface 121a on the valve seat core 12, so that the adjustment without a flow curve can be achieved, which not only has good versatility, but also has low production and processing costs. And has a wide range of application prospects;
- the valve head 21 and the guide sleeve 13 are provided independently, that is, the valve head 21 and the guide sleeve 13 are separately installed.
- valve core assembly 20 When assembling, the valve core assembly 20 can be assembled first, and the valve is used.
- the separate design of the head 21 and the guide sleeve 13 allows the spool assembly 20 to be threaded from one end of the guide sleeve 13 to assemble the finished product.
- the valve core assembly 20 can be disassembled, recovered, and repaired separately, thereby further effectively reducing the production cost.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Lift Valve (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
Description
Claims (12)
- 一种电子膨胀阀,包括阀座组件(10)以及阀芯组件(20),所述阀芯组件(20)安装于所述阀座组件(10)内;其特征在于,所述阀座组件(10)包括阀座(11)、阀座芯(12)以及导向套(13),所述阀座(11)具有一端敞开设置的阀腔(11a),所述阀座芯(12)安装于所述阀座(11)的另一端,所述导向套(13)安装在阀座(11)上;所述阀座芯(12)上开设有贯穿的导通部(121),所述导通部(121)靠近所述导向套(13)的一端周向具有向外倾斜设置的流量调节面(121a);所述阀芯组件(20)包括阀头(21),所述阀头(21)滑动地安装于所述导向套(13)内,所述阀头(21)与所述阀座芯(12)配合的一端具有密封面(21a),驱动所述阀头(21)靠近/远离所述阀座芯(12)运动,以调节所述流量调节面(121a)与所述密封面(21a)之间的间隙来控制冷剂的流量。
- 根据权利要求1所述的电子膨胀阀,其特征在于,所述导通部(121)靠近所述导向套(13)的一端具有导流口(123),所述导流口(123)的开口口径沿所述阀座芯(12)朝向所述导向套(13)的方向逐渐增大,以使所述导流口(123)的内壁形成向外倾斜设置的所述流量调节面(121a)。
- 根据权利要求1所述的电子膨胀阀,其特征在于,所述导流口(123)的开口角度为α,所述导通部(121)的孔径为A,所述A随所述α的增大而增大。
- 根据权利要求1所述的电子膨胀阀,其特征在于,所述阀座芯(12)靠近所述导向套(13)的一端沿径向形成有抵接部(122),所述阀座(11)上开设有与所述阀腔(11a)连通的安装孔(111),所述阀座芯(12)的一端穿设于所述安装孔(111)内,并使所述抵接部(122)抵接于所述阀座(11)上。
- 根据权利要求1所述的电子膨胀阀,其特征在于,所述阀芯组件(20)还包括丝杆(23)以及弹簧(25),所述阀头(21)上开设有连接孔(211),所述丝杆(23)的一端安装于连接孔(211)内,所述弹簧(25)套设于所述丝杆(23),且所述弹簧(25)的一端抵靠于丝杆(23),另一端收容在所述连接孔(211)内。
- 根据权利要求5所述的电子膨胀阀,其特征在于,所述连接孔(211)的内壁具有向内凸伸的凸缘(27),所述丝杆(23)上设有垫圈(24),弹簧(25)的一端抵靠于垫圈(24),另一端抵靠于凸缘(27)。
- 根据权利要求6所述的电子膨胀阀,其特征在于,所述阀芯组件(20)还包括限位套(26),所述限位套(26)收容于所述连接孔(211)内并能够与所述凸缘(27)配合形成限位,所述丝杆(23)的一端穿设于所述凸缘(27)并与所述限位套(26)连接。
- 根据权利要求7所述的电子膨胀阀,其特征在于,所述垫圈(24)及所述弹簧(25)位于所述凸缘(27)的一侧,所述限位套(26)位于所述凸缘(27)的另一侧,所述限位套(26)的外径大于所述凸缘(27)的内径。
- 根据权利要求5所述的电子膨胀阀,其特征在于,所述阀芯组件(20)还包括密封圈(22),所述密封圈(22)套设于所述阀头(21)的外壁,用于密封所述阀头(21)的外壁与所述导向套(13)的内壁之间的间隙。
- 根据权利要求5所述的电子膨胀阀,其特征在于,所述电子膨胀阀还包括所述螺母组件(30)以及转子(40),所述螺母组件(30)安装于所述阀座(11)远离所述阀座芯(12)的一端,所述丝杆(23)远离所述阀座芯(12)的一端穿设并螺纹连接于所述螺母组件(30),且与所述转子(40)连接。
- 根据权利要求10所述的电子膨胀阀,其特征在于,所述螺母组件(30) 包括螺母座(31)以及固定片(32),所述固定片(32)呈环状,所述固定片(32)的内周缘连接所述螺母座(31),所述固定片(32)的外周缘连接所述导向套(13)的一端。
- 根据权利要求10所述的电子膨胀阀,其特征在于,所述电子膨胀阀还包括套管(50),所述套管(50)的一端安装于所述导向套(13),并使所述螺母组件(30)及所述转子(40)收容在所述套管(50)内。
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CN212203141U (zh) * | 2019-12-31 | 2020-12-22 | 浙江盾安禾田金属有限公司 | 电子膨胀阀及使用该电子膨胀阀的空调系统 |
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CN114623240B (zh) * | 2020-12-11 | 2023-03-14 | 浙江盾安人工环境股份有限公司 | 阀针组件及具有其的电子膨胀阀 |
KR20240056601A (ko) * | 2021-09-30 | 2024-04-30 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | 전자 팽창 밸브 |
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