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WO2020083362A1 - 电子膨胀阀 - Google Patents

电子膨胀阀 Download PDF

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Publication number
WO2020083362A1
WO2020083362A1 PCT/CN2019/113233 CN2019113233W WO2020083362A1 WO 2020083362 A1 WO2020083362 A1 WO 2020083362A1 CN 2019113233 W CN2019113233 W CN 2019113233W WO 2020083362 A1 WO2020083362 A1 WO 2020083362A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
valve seat
wall portion
port
cavity
Prior art date
Application number
PCT/CN2019/113233
Other languages
English (en)
French (fr)
Inventor
何伟鑫
常青
袁泽
沈自成
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
Priority claimed from CN201910041251.7A external-priority patent/CN111102366A/zh
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 US17/287,845 priority Critical patent/US11906217B2/en
Priority to JP2021518600A priority patent/JP2022502620A/ja
Priority to KR1020217013729A priority patent/KR102516818B1/ko
Priority to EP19876841.8A priority patent/EP3872380B1/en
Publication of WO2020083362A1 publication Critical patent/WO2020083362A1/zh

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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
    • F25B41/31—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
    • 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
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound
    • 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, in particular to an electronic expansion valve.
  • Refrigeration systems usually include compressors, throttling elements, outdoor heat exchangers and other components. Throttling elements can use electronic expansion valves for refrigerant flow adjustment. When the refrigerant passes through the electronic expansion valve, a certain amount of noise may be generated, so the structure of the electronic expansion valve can be optimized to reduce the noise generated when the refrigerant passes through the electronic expansion valve.
  • An object of the present invention is to provide an electronic expansion valve for improving the noise problem generated when refrigerant passes through the electronic expansion valve.
  • the electronic expansion valve includes a valve seat assembly, a first connecting portion and a second connecting portion.
  • the valve seat assembly includes an outer wall portion.
  • the valve seat assembly includes a valve portion provided with a valve port.
  • the electronic expansion valve includes a first A valve seat cavity and a second valve seat cavity, the first valve seat cavity is located above the valve port, the second valve seat cavity is located below the valve port, the valve port can communicate with the first valve seat cavity And a second valve seat cavity, the first nozzle portion is fixedly connected to the outer wall portion located above the valve opening portion, the second nozzle portion is fixedly connected to the outer wall portion located below the valve opening portion, and the first The inner diameter of the two valve seat chambers is larger than the inner diameter of the second nozzle portion, and the inner diameter of the valve port is smaller than the inner diameter of the second valve seat chamber.
  • the electronic expansion valve provided by the present invention includes a first valve seat cavity and a second valve seat cavity.
  • the first valve seat cavity enters the second valve seat through the valve port of the valve port Chamber, because the diameter of the second valve seat chamber is larger than the diameter of the second nozzle and the diameter of the valve port, the refrigerant will reduce the flow rate and pressure after passing through the valve port, thereby improving the noise of the refrigerant when passing through the electronic expansion valve .
  • FIG. 1 is a schematic cross-sectional view of an electronic expansion valve according to a first embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional view of the valve seat assembly in FIG. 1;
  • FIG. 3 is a schematic cross-sectional view of another electronic expansion valve according to the first embodiment of the present invention.
  • FIG. 4 is a schematic cross-sectional view of the valve seat assembly in FIG. 3;
  • FIG. 5 is a schematic cross-sectional view of an electronic expansion valve according to a second embodiment of the present invention.
  • FIG. 6 is a schematic cross-sectional view of the valve seat assembly in FIG. 5;
  • FIG. 7 is a schematic cross-sectional view of another electronic expansion valve according to a second embodiment of the present invention.
  • FIG. 8 is a schematic cross-sectional view of the valve seat assembly in FIG. 7;
  • FIG. 9 is a schematic cross-sectional view of an electronic expansion valve according to a third embodiment of the present invention.
  • FIG. 10 is a schematic cross-sectional view of the valve seat assembly in FIG. 9;
  • FIG. 11 is a schematic cross-sectional view of another electronic expansion valve according to a third embodiment of the present invention.
  • FIG. 12 is a schematic cross-sectional view of the valve seat assembly in FIG. 11;
  • Valve seat assembly 11A. Outer wall part, 110. Main valve seat, 111. Peripheral wall part, 1111. First peripheral wall part, 11111. First interface part, 1112. Second peripheral wall part, 1113. Main peripheral wall, 11131. First interface, 11132. Second interface, 11141. First interface, 112. Valve port, 1121. Valve port, 113. End cap, 1131. Bottom wall, 11311 . The second interface part, 1132. The bottom wall part, 1133. The bottom wall part, 11331. The second interface part, 12. The first takeover part, 13. The second takeover part, 15. The valve body part, 16. The housing, 17 .Magnetic rotor assembly, 171. Magnetic rotor, 172. Connecting plate, 18. Screw valve needle assembly, 181. Screw rod, 182. Valve needle, 183. Sleeve part, 184. End plate part, 185. Boss, 186. Spring, 187. Support part, 19. Nut assembly, 191. Nut, 192. Connecting piece
  • FIG. 1 is a schematic structural diagram of an electronic expansion valve according to a first embodiment of the present invention.
  • the present invention is directed to a specific structure of an electronic expansion valve, the purpose is to improve the structure of the valve seat assembly of the electronic expansion valve, and other components of the electronic expansion valve, such as magnetic rotor assembly, screw valve Needle assembly, nut assembly, stop device and other components are not limited and described in detail here.
  • the present invention does not particularly limit the structure of the above components, and those skilled in the art can apply it to all similar electronic expansion valve structures according to the technical solutions disclosed in the present invention.
  • the electronic expansion valve 1 has a valve seat assembly 11, the valve seat assembly 11 is fixedly connected with a first nozzle portion 12 and a second nozzle portion 13, the structure of the valve seat assembly 11 will be described in detail below, the valve seat assembly 11 is relatively up On one side, a valve body portion 15 is provided.
  • the valve body portion is generally cup-shaped with an open bottom.
  • the bottom portion has an opening and is fixedly connected to the valve seat assembly 11.
  • a step may be provided on the upper end of the valve seat assembly 11, and The bottom opening of the valve body portion 15 is matched with the step, and the two are welded to fix, or the two are welded and fixed in other forms.
  • the present invention does not limit the specific matching structure of the valve body portion 15 and the valve seat assembly 11.
  • a housing 16 is also provided.
  • the housing 16 and the valve body 15 can be fixed by welding. In this way, the housing 16, the valve body 15, and the valve seat assembly 11 basically form one of them. Space within.
  • valve body portion 15 is not necessarily present.
  • the housing 16 may be directly fixedly connected to the valve seat assembly 11.
  • the magnetic rotor assembly 17 can be affected by the electromagnetic force of the electromagnetic coil While rotating, the magnetic rotor assembly 17 includes a magnetic rotor 171 and a connecting plate 172 fixedly connected or integrally provided with the magnetic rotor 171, the screw valve needle assembly 18 includes a screw 181, and the screw 181 is fixedly connected to the connecting plate 172.
  • the rod 181 is connected to the magnetic rotor assembly 17 through the connecting plate 172 to form a whole.
  • the screw rod 181 and the connecting plate 172 may be fixedly connected by welding.
  • the screw valve needle assembly further includes a valve needle 182, a sleeve portion 183, an end plate portion 184, a boss 185, a spring 186, and a supporting member 187.
  • the screw shaft 181 and the valve needle 182 are floatingly connected through the sleeve portion 183.
  • the sleeve portion 183 is generally cup-shaped with an open bottom, and an opening is provided at the bottom.
  • the valve needle 182 passes through the opening and enters the first valve seat cavity A (described in detail below).
  • the valve port 1121 cooperates with the valve port 1121 for adjustment.
  • valve needle 182 can move up and down within a certain stroke relative to the sleeve portion 183, but it cannot escape the restriction of the sleeve portion 183.
  • An end plate portion 184 is provided on the top of the sleeve portion 183, an end plate thrust surface is provided on the end plate portion 184, a boss 185 is fixedly connected to the lower end of the screw rod 181, and a boss thrust surface is provided on the boss 185.
  • the back of the thrust surface of the boss is also provided with a spring 186 and supported by a supporting member 187.
  • the boss 185 and the screw 181 can be fixedly connected to the inner space of the sleeve portion 183, and then Then, the end plate portion 184 and the sleeve portion 183 are fixed by welding or the like. In this way, the thrust surface of the boss and the thrust surface of the end plate are opposed to each other, and at the same time, the sleeve portion 183 is suspended on the screw 181. The sleeve portion 183 and the screw 181 cannot be detached, but can be moved relative to each other.
  • the disengagement described herein refers to the separation of the sleeve portion 183 and the screw rod 181 into two separate parts without any restriction to each other, not just that the two are not in physical contact.
  • the nut assembly 19 includes a nut 191 and a connecting piece 192.
  • the nut 191 is fixedly connected to the connecting piece 192 or may be an integral structure.
  • the nut 191 is fixed in a space enclosed by the housing 16 and the valve body 15 through a metal connecting piece 192.
  • the nut 191 may be integrally injection-molded with the connecting piece 192 using a non-metallic material, and the connecting piece 192 and the valve body 15 may be fixedly connected by welding.
  • the nut 191 has a through-hole penetrating along its axial direction, and an internal thread is provided inside the through-hole.
  • an external thread is provided on the outer peripheral surface of the screw rod 181, so that when the magnetic rotor assembly 17 makes a rotational movement At this time, under the action of the screw pair, the screw rod 181 linked with it performs a rotary motion, and also moves up and down relative to the nut assembly 19, thereby driving the valve needle 182 to move up and down.
  • valve seat assembly 11 is only a specific structure to make it easier for those skilled in the art to understand the basic working principle of the electronic expansion valve, and does not mean that the protection scope of the present invention Due to limitations, the technical solution of the present invention can also be applied to electronic expansion valves of other operating structures.
  • FIG. 1 is a schematic cross-sectional view of an electronic expansion valve according to a first embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional view of a valve seat assembly in FIG. 1;
  • the outer wall portion 11A of the valve seat assembly 11 includes a peripheral wall portion 111, and the peripheral wall portion 111 includes a first peripheral wall portion 1111, wherein the valve port portion 112 and the first peripheral wall portion 1111 may be processed using an integral material
  • the two are an integrated structure.
  • the valve port 112 and the first peripheral wall 1111 can also be separately processed and then welded or fixed together.
  • the valve port 112 and the first peripheral wall 1111 are described below.
  • the integral or fixedly connected parts are collectively called the first valve seat part.
  • the first valve seat part is generally cup-shaped.
  • the valve port part 112 has a valve port 1121.
  • the port 112 changes the flow area between the valve port 1121 and the valve needle 182, thereby controlling the amount of refrigerant flow through the valve port 1121.
  • the peripheral wall portion 111 includes a second peripheral wall portion 1112, and the outer wall portion 11A includes a bottom wall portion 1131.
  • the second peripheral wall portion 1112 and the bottom wall portion 1131 can adopt an integrated structure, and the second peripheral wall portion 1112 and the bottom wall portion 1131 can also be processed separately. The way of welding fixing or tight fitting is for convenience of description.
  • the integrally or fixedly formed parts of the bottom wall portion 1131 and the second peripheral wall portion 1112 are collectively referred to as a second valve seat portion, and the second valve seat portion is generally cup-shaped.
  • Both the second peripheral wall portion 1112 and the bottom wall portion 1131 are of an integrated structure, and there is no strict distinction between the two in this embodiment.
  • the bottom wall portion 1131 refers to the bottom area
  • the second peripheral wall portion 1112 refers to the peripheral area.
  • the first peripheral wall portion 1111 includes a portion of the outer wall portion 11A corresponding to the first valve seat cavity A, and a portion of the outer wall portion 11A corresponding to the first valve seat cavity A is integral with the valve port portion 112
  • the second peripheral wall portion 1112 includes the corresponding outer wall portion 11A portion of the second valve seat cavity B, and the remaining outer wall portion 11A portion integral with the outer wall portion 11A portion corresponding to the first valve seat cavity A
  • the first peripheral wall portion 1111 and the second peripheral wall portion 1112 are only introduced for the convenience of explanation, and are merely to make it easier for those skilled in the art to understand, and do not mean to limit the scope of protection.
  • the first valve seat portion and the second valve seat portion may be fixedly connected by welding or the like.
  • a step portion may be provided at the bottom of the first valve seat portion, and the second peripheral wall portion 1112 of the second valve seat portion cooperates with the step portion Then, the two are welded and fixed; the method of welding and fixing the first valve seat portion and the second valve seat portion is not particularly limited in this embodiment.
  • the electronic expansion valve includes two cavities, namely a first valve seat cavity A and a second valve seat cavity B, the first valve seat cavity A is located above the valve port portion 112, or at least most of the first valve
  • the seat cavity A is located above the valve port 112;
  • the second valve seat cavity B is located below the valve port 112, or at least a majority of the second valve seat cavity B is located below the valve port 112.
  • the second valve seat cavity B can communicate with the first valve seat cavity A through the valve port 1121.
  • the first peripheral wall portion 1111 is provided with a first interface portion 11111 for fixed connection with the first nozzle portion 12.
  • the first nozzle portion 12 and the valve seat assembly 11 are welded at the first interface portion 11111
  • the bottom wall portion 1131 is provided with a second interface portion 11311 for fixed connection with the second nozzle portion 13.
  • the second nozzle portion 13 and the valve seat assembly 11 can also be fixedly connected by welding.
  • Most of the first connecting portion 12 is located above the valve opening portion 112 or all above the valve opening portion 112, and most of the first connecting portion 11111 is located above the valve opening portion 112 or all above the valve opening portion 112, and the second connecting portion 13 is The second port portion 11311 is located below the valve port portion 112.
  • the second valve seat cavity B is larger than the valve port, specifically, the portion of the second valve seat cavity B near the valve port is larger than the valve port or the second valve
  • the average diameter of the seat cavity B is greater than the diameter of the valve port.
  • the valve seat assembly 11 may be of other structural forms.
  • the second interface portion 11311 may be provided not only on the bottom wall portion 1131 but also on the peripheral wall portion 111, as shown in FIGS. 3 and 4, and FIG. 3 is another example of the first embodiment. 4 is a schematic cross-sectional view of the valve seat assembly in FIG.
  • valve seat assembly 111 includes a first valve seat portion and a second valve seat portion, the first valve seat portion and the second valve
  • the seat portion is fixedly connected by welding, and the first connecting portion 12, the second connecting portion 13 and the valve seat assembly 11 are all fixedly connected by welding;
  • the first valve seat portion includes the first peripheral wall portion 1111 and the valve port portion 112, and the second valve
  • the seat portion includes a second peripheral wall portion 1112 and a bottom wall portion 1131, the first peripheral wall portion 1111 and the valve port portion 112 have an integral structure, and the second peripheral wall portion 1112 and the bottom wall portion 1131 have an integral structure.
  • the second interface portion 11311 of the present embodiment is mostly located in the second peripheral wall portion 1112, and a small portion is located in the first peripheral wall portion 1111, or the second interface portion 11311 is provided in the peripheral wall portion 111 of the valve seat assembly 11.
  • the second connecting portion 13 is drawn out from the side of the valve seat assembly 11, at this time, the first connecting portion 12 is at least mostly located above the valve opening portion 112, and the second connecting portion 13 is at least mostly located below the valve opening portion 112.
  • the inner cavity of the first nozzle portion 12 is directly communicated with the first valve seat cavity A, and the inner cavity of the second nozzle portion 13 is directly communicated with the second valve seat cavity B.
  • the cavity communicates with the inner cavity of the second nozzle portion 13 through the first valve seat cavity A, the valve port 1121, and the second valve seat cavity B.
  • the inner diameter of the second valve seat cavity B is larger than the inner diameter of the second connecting portion 13, and the inner diameter of the valve port 1121 is smaller than the inner diameter of the second valve seat cavity B. Due to the shape of the valve port 1121, there may be various structural forms, namely For 1121, there may be multiple different inner diameters. In this specification, the inner diameter of the valve port 1121 is the smallest inner diameter of the valve port 1121. When the second valve seat cavity B is a regular cylindrical cavity, the inner diameter of the second valve seat cavity B is the inner diameter of the second valve seat cavity B. When the shape of the second valve seat cavity B may be irregular, it may be inverted Round table-shaped, step-shaped or a combination of several structures.
  • the second valve seat cavity B is expressed by a diameter.
  • the inner diameter of the second nozzle portion 13 is the inner diameter before the second nozzle portion 13 is flared or flared, or the cross section of the second nozzle portion 13 When it is a non-standard circle, it is referred to as the diameter of the second nozzle portion 13.
  • the first nozzle portion 12 is fixedly connected to the outer wall portion 11A, the connection portion of the first nozzle portion 12 and the outer wall portion 11A is relatively close to the first valve seat cavity A, and the second nozzle portion 13 is connected to the outer wall
  • the portion 11A is fixedly connected, and the connection portion of the second nozzle portion 13 and the outer wall portion 11A is relatively close to the second valve seat cavity B, and the passage diameter of the second valve seat cavity B relatively close to the valve port portion 112 is larger than that of the second nozzle portion 13
  • the diameter of the valve port 1121 may be smaller than the diameter of the second valve seat cavity B, or the average diameter of the second valve seat cavity B may be greater than the diameter of the second nozzle portion 13,
  • the diameter of the valve port 1121 is smaller than the diameter of the second valve seat cavity B, and the diameter of the valve port 1121 is smaller than the diameter of the second nozzle portion 13.
  • the above-mentioned electronic expansion valve includes a first valve seat cavity A and a second valve seat cavity B.
  • the first valve seat cavity A passes through the valve port 1121 of the valve port portion 112 and enters the second valve seat cavity B.
  • the second valve seat cavity B is larger than the second connecting portion 13 and larger than the diameter of the valve port 1121, the refrigerant will reduce the flow rate and pressure after passing through the valve port 1121, thereby improving the noise when the electronic expansion valve passes.
  • the outer wall portion 11A of the valve seat assembly 11 of this embodiment includes the outer wall portion 11A portion of the first valve seat portion and the second valve seat portion.
  • FIG. 5 is a schematic cross-sectional view of the electronic expansion valve of the second embodiment
  • FIG. 6 is a schematic cross-sectional view of the valve seat assembly 11 in FIG. 5
  • the valve seat assembly 11 includes a main valve seat 110 and an end cover 113, The main valve seat 110 and the end cover 113 are separately processed and fixedly connected by welding to form the valve seat assembly 11
  • the main valve seat 110 includes a main peripheral wall portion 1113 and a valve port portion 112, and the main peripheral wall portion 1113 and the valve port portion 112 are an integral structure
  • the cover 113 includes a bottom wall portion 1132 and an auxiliary peripheral wall portion, and the bottom wall portion 1132 and the auxiliary peripheral wall portion have an integral structure.
  • the outer wall portion 11A of the valve seat assembly 11 of this embodiment includes a main peripheral wall portion 1113 and an end cover 113.
  • the peripheral wall portion 111 includes the peripheral wall portion 111 of the main valve seat 110, that is, the main peripheral wall portion 1113 and the peripheral wall portion 111 of the end cover 113
  • the main peripheral wall portion 1113 and the valve port portion 112 are an integral structure formed by processing the same material.
  • the main peripheral wall portion 1113 and the valve port portion 112 can also be processed separately, and then fixedly connected by welding or interference press fitting.
  • the valve port 112 has a valve port 1121.
  • the lower end of the main peripheral wall portion 1113 is fixedly connected to the end cover 113, and the main valve seat 110 and the end cover 113 are fixedly connected.
  • the main peripheral wall portion 1113 and the auxiliary peripheral wall portion of the end cover 113 may be welded to the main peripheral wall.
  • a step is provided at the bottom of the portion 1113, and the step matches the outer edge of the end cover 113, and then the two are fixedly connected by welding.
  • the form of the fixed connection between the main valve seat 110 and the end cover 113 is not particularly limited in this embodiment.
  • the electronic expansion valve includes two cavities, namely a first valve seat cavity A and a second valve seat cavity B.
  • the first valve seat cavity A is located above or at least most of the valve port 112
  • the second valve seat cavity B is located below the valve port 112 or at least most of it is located below the valve port 112.
  • the second valve seat cavity B can communicate through the valve port 1121 The first valve seat cavity A.
  • the valve seat assembly 11 is provided with a first interface portion 11131 on the opposite upper side of the main valve seat 110, and the first interface portion 11131 is at least mostly located above the valve port portion 112 or the first interface portion 11131 is provided on the main peripheral wall portion 1113 Relatively on the upper side, the valve seat assembly 11 and the first nozzle portion 12 are fixedly connected by welding at the first interface portion 11131; the valve seat assembly 11 is provided with a second interface portion 11132 on the opposite lower side of the main valve seat 110, The second interface portion 11132 is at least mostly located below the valve port portion 112. The valve seat assembly 11 and the second nozzle portion 13 are fixedly connected to the second interface portion 11132 at the second interface portion 11132 by welding.
  • the second The connecting portion 13 is drawn from the side of the valve seat assembly 11.
  • the first port portion 12 is located above the valve port portion 112 or at least mostly above the valve port portion 112, and the second port portion 13 is located below the valve port portion 112 or at least mostly below the valve port portion 112.
  • the outer wall portion 11A of the valve seat assembly 11 of this embodiment is not formed by a single part.
  • the outer wall portion 11A of the valve seat assembly 11 includes a part of the main valve seat 110 and the end cap 113; the first peripheral wall portion 1111 is provided on the main valve seat 110 On the opposite upper side, the second peripheral wall portion 1112 is mostly provided on the main valve seat 110, that is, on the relatively lower side of the main valve seat 110, and a part of the second peripheral wall portion 1112 is located on the end cover 113.
  • FIG. 7 is a schematic cross-sectional view of another electronic expansion valve in the second embodiment
  • FIG. 8 is a schematic cross-sectional view of the valve seat assembly in FIG. 7
  • 11 includes a main valve seat 110 and an end cover 113.
  • the main valve seat 110 also includes a main peripheral wall portion 1113 and a valve port portion 112, and the end cover 113 includes a bottom wall portion 1132 and an auxiliary peripheral wall portion (not shown in the figure).
  • the second interface portion 11132 can be provided not only on the peripheral wall portion 111 of the outer wall portion 11A of the valve seat assembly 11 below the valve port portion 112, but also on the bottom wall portion 1132, when the second interface portion 11132 is provided on the bottom wall portion 1132 In order to make the second interface portion 11132 and the second valve seat portion fit more firmly, an extension portion extending downward along the outer periphery of the second interface portion 11132 may be provided on the bottom wall portion 1132.
  • the extension portion and the second nozzle portion 13 To match, specifically, the second take-over portion 13 is wrapped around the outer circumference of the extension, or the extended portion is wrapped around the outer circumference of the second take-up portion 13, and, as described above, when the outer edge of the bottom wall portion 1132 extends upward to a certain degree, The second interface portion 11132 may even be provided on the outer edge surface of the bottom wall portion 1132.
  • the first connecting portion 12 is generally located above the valve opening portion 112, and the second connecting portion 13 is located substantially below the valve opening portion 112.
  • the second valve seat cavity B is larger than the second connecting portion 13, that is, the inner diameter of the second valve seat cavity B is larger than the inner diameter of the second connecting portion 13, or the second valve seat cavity B has a larger diameter than the second connecting portion 13 ,
  • the inner diameter of the valve port 1121 is smaller than the inner diameter of the second valve seat cavity B or the smallest diameter of the valve port 1121 is smaller than that of the second valve seat cavity B, specifically, the second valve seat cavity B may be close to the valve port
  • the diameter of the portion 112 is larger than the diameter of the second connecting portion 13 or the average diameter of the second valve seat cavity B is larger than the diameter of the second connecting portion 13, and the diameter of the second valve seat cavity B is larger than the smallest value of the valve port 1121
  • the diameter of the port, the shape of the valve port 1121 may exist in a variety of structural forms, that is, for the entire valve port 1121, there may be multiple different inner diameters or diameters, the diameter of the valve port 1121 is the smallest at the valve port 1121 The
  • the inner diameter of the second valve seat cavity B is the inner diameter of the second valve seat cavity B
  • the second valve seat cavity B can be in the form of an inverted truncated cone, a step, or a combination of several structures.
  • the inner diameter of the second mouthpiece 13 refers to the inner diameter of the second mouthpiece 13 before flared or flared, or the cross section of the second mouthpiece 13 When it is a non-standard circle, it is referred to as the diameter of the second nozzle portion 13.
  • the above-mentioned electronic expansion valve includes a first valve seat cavity A and a second valve seat cavity B.
  • the refrigerant flows in one flow direction, the refrigerant enters the second valve seat cavity B from the first valve seat cavity A through the valve port of the valve port portion Since the second valve seat cavity B is larger than the second connecting portion 13 and larger than the valve port 1121, the refrigerant will reduce the flow rate and pressure after passing through the valve port 1121, thereby improving the noise when the refrigerant passes through the electronic expansion valve.
  • the outer wall portion 11A and the bottom wall portion 1132 of the valve seat assembly 11 are relative to the valve seat assembly 11 and are not formed by a single part.
  • FIG. 9 is a schematic cross-sectional view of an electronic expansion valve according to a third embodiment of the present invention
  • FIG. 10 is a schematic cross-sectional view of the valve seat assembly in FIG. 9
  • 11 includes an outer wall portion 11A and a valve port portion 112.
  • the outer wall portion 11A of the valve seat assembly 11 includes a peripheral wall portion 111 and a bottom wall portion 1133.
  • the peripheral wall portion 111 and the bottom wall portion 1133 of this embodiment are an integrated structure, wherein the peripheral wall portion 111
  • the valve port 112 is provided with a valve port 1121.
  • the valve port 112 and the outer wall 11A are separately processed, and then fixedly connected by welding or interference press fitting.
  • the electronic expansion valve is divided into two chambers by the valve port portion 112, namely a first valve seat cavity A and a second valve seat cavity B, the first valve seat cavity A is located relatively above the valve port portion 112 The second valve seat cavity B is located below the valve port portion 112.
  • the valve port 1121 can communicate with the first valve seat cavity A and the second valve seat cavity B.
  • a first interface portion 11141 is provided, and the first nozzle portion 12 and the valve seat assembly 11 are fixedly connected by welding at the first interface portion 11141;
  • the outer wall portion 11A of the seat assembly 11 is provided with a second interface portion 11331 relative to the lower peripheral wall portion 111.
  • the second nozzle portion 13 and the valve seat assembly 11 are fixedly connected to the second interface portion 11331 by welding. At least most of the one connecting portion 12 is located above the valve opening portion 112, and all or at least most of the second connecting portion 13 is located below the valve opening portion 112.
  • FIG. 11 is a schematic cross-sectional view of another electronic expansion valve of the third embodiment
  • FIG. 12 is a cross-section of the valve seat assembly of FIG. Schematic diagram
  • the second interface portion 11331 can be provided on the bottom wall portion 1133 in addition to the peripheral wall portion 111 located below the valve port portion 112, when the second interface portion 11331 is provided on the bottom wall portion 1133, in order to make the second The coupling and fixing of the interface portion 11331 and the valve seat assembly 11 is more firm.
  • An extension portion extending downward along the outer periphery of the second interface portion 11331 may be provided on the bottom wall portion 1133.
  • the extension portion cooperates with the second nozzle portion 13, specifically, the first The second connecting portion 13 is coated on the outer periphery of the extension portion, or the extending portion is coated on the outer periphery of the second connecting portion 13, at this time, the first connecting portion 12 is at least mostly located above the valve port portion 112, and the second connecting portion 13 is at least mostly located at the valve Below mouth 112.
  • the second valve seat cavity B is larger than the second connecting portion 13, that is, the inner diameter of the second valve seat cavity B is larger than the inner diameter of the second connecting portion 13, or the second valve seat cavity B has a larger diameter than the second connecting portion 13 ,
  • the inner diameter of the valve port 1121 is smaller than the inner diameter of the second valve seat cavity B or the smallest diameter of the valve port 1121 is smaller than that of the second valve seat cavity B, specifically the second valve seat cavity B is close to the valve port 112
  • the diameter at the port is larger than the diameter at the second nozzle portion 13 or the average diameter at the second valve seat cavity B is greater than the diameter at the second nozzle portion 13, and the diameter at the second valve seat cavity B is greater than the diameter at the smallest port
  • the shape of the valve port 1121 may have various structural forms, that is, for the entire valve port 1121, there may be a plurality of different inner diameters or diameters.
  • the diameter of the valve port 1121 is the smallest diameter of the valve port 1121.
  • the inner diameter of the second valve seat cavity B is the inner diameter of the second valve seat cavity B, when the second valve seat cavity B is irregular, the second valve seat cavity B can be in the form of an inverted truncated cone, a step, or a combination of several structures.
  • the inner diameter of the second mouthpiece 12 refers to the inner diameter of the second mouthpiece 12 before flared or flared, or the cross section of the second mouthpiece 12 When it is a non-standard circle, it is referred to as the diameter of the second nozzle portion 12.
  • the above-mentioned electronic expansion valve includes a first valve seat cavity A and a second valve seat cavity B.
  • the refrigerant flows in one flow direction, the refrigerant enters the second valve seat cavity B from the first valve seat cavity A through the valve port of the valve port portion Since the second valve seat cavity B is larger than the second connecting portion 13 and larger than the valve port 1121, the refrigerant will reduce the flow rate and pressure after passing through the valve port 1121, thereby improving the noise when the refrigerant passes through the electronic expansion valve.
  • peripheral wall portion refers to the entire peripheral wall portion of the valve seat assembly, which may be an integral structure or two or more components fixedly connected, and the "first peripheral wall portion” And “second peripheral wall” are for the convenience of describing the concept introduced by the valve seat assembly assembled separately. Both the first peripheral wall and the second peripheral wall are part of the peripheral wall, but the peripheral wall includes The peripheral wall portion and the second peripheral wall portion may also include other components or other parts. For example, in the second embodiment, the end cover also includes a part of the peripheral wall portion.
  • the typical structures of the first peripheral wall portion and the second peripheral wall portion are described in the above-mentioned related embodiments. Of course, based on the above-mentioned embodiments, new shapes can be obtained by simply changing the shape thereof.
  • valve port refers to a region where the valve port is provided or a relatively middle region relatively close to the valve port.
  • Bottom wall portion refers to the bottom area of the valve seat assembly opposite the valve port.

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Abstract

一种电子膨胀阀，包括阀座组件(11)，第一接管部(12)以及第二接管部(13)，阀座组件(11)包括外壁部(11A),设有阀口(1121)的阀口部(112),第一阀座腔(A)以及第二阀座腔(B)，第一阀座腔(A)位于阀口部(112)上方，第二阀座腔(B)位于阀口部(112)下方，阀口(1121)能够连通第一阀座腔(A)以及第二阀座腔(B)，第一接管部(12)与位于阀口部(112)上方的外壁部(11A)固定连接，第二接管部(13)与位于阀口部(112)下方的外壁部(11A)固定连接，第二阀座腔(B)的内径大于第二接管部(13)的内径，阀口(1121)的内径小于第二阀座腔(B)的内径，冷媒由第一阀座腔(A)通过阀口部(112)的阀口(1121)后进入第二阀座腔(B)，在通过阀口(1121)后会降低流速和压力，从而减少电子膨胀阀或者管路中噪音的产生。

Description

电子膨胀阀
本申请要求于2018年10月27日提交中国专利局的申请号为201811262155.7、发明名称为“电子膨胀阀”的中国专利申请、于2019年1月16日提交中国专利局的申请号为201910041251.7、发明名称为“电子膨胀阀”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及制冷控制技术领域，特别涉及一种电子膨胀阀。
背景技术
制冷系统中通常包括压缩机、节流元件、室外换热器以及其它零部件，节流元件可以采用电子膨胀阀，用于冷媒流量的调节。当冷媒通过电子膨胀阀时，可能会产生一定的噪音，因此可以对电子膨胀阀结构进行优化，以降低冷媒通过电子膨胀阀时产生的噪音。
发明内容
本发明的目的在于提供一种电子膨胀阀，用于改善冷媒通过电子膨胀阀时产生的噪音问题。
为实现上述目的，采用如下技术方案：
电子膨胀阀，包括阀座组件，第一接管部以及第二接管部，所述阀座组件包括外壁部,所述阀座组件包括设有阀口的阀口部,所述电子膨胀阀包括第一阀座腔以及第二阀座腔，所述第一阀座腔位于阀口部上方，所述第二阀座腔位于阀口部下方，所述阀口能够连通所述第一阀座腔以及第二阀座腔，所述第一接管部与位于所述阀口部上方的外壁部固定连接，所述第二接管部与位于所述阀口部下方的外壁部固定连接，所述第二阀座腔的内径大于所述第二接管部的内径，所述阀口的内径小于所述第二阀座腔的内径。
本发明提供的电子膨胀阀，包括第一阀座腔和第二阀座腔，冷媒经一个流动方向通过电子膨胀阀时，由第一阀座腔通过阀口部的阀口进入第二 阀座腔，由于第二阀座腔的通径大于第二接管部的通径，且大于阀口的通径，冷媒在通过阀口后会降低流速和压力，从而改善冷媒通过电子膨胀阀时的噪音。
附图说明
为了更清楚地说明本发明实施例，下面将对实施例或现有技术描述中所需要使用的附图做简单介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，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获得其他的附图。
图1为本发明提供第一种实施例电子膨胀阀的截面示意图；
图2为图1中阀座组件的截面示意图；
图3为本发明提供第一种实施例另一种电子膨胀阀的截面示意图；
图4为图3中阀座组件的截面示意图；
图5为本发明提供第二种实施例电子膨胀阀截面示意图；
图6为图5中阀座组件的截面示意图；
图7为本发明提供第二种实施例另一种电子膨胀阀截面示意图；
图8为图7中阀座组件的截面示意图；
图9为本发明提供第三种实施例电子膨胀阀截面示意图；
图10为图9中阀座组件的截面示意图；
图11为本发明提供第三种实施例另一种电子膨胀阀截面示意图；
图12为图11中阀座组件的截面示意图；
其中，上述附图包括以下附图标记：
1.电子膨胀阀、11.阀座组件、11A.外壁部、110.主阀座、111.周壁部、1111.第一周壁部、11111.第一接口部、1112.第二周壁部、1113.主周壁部、11131.第一接口部、11132.第二接口部、11141.第一接口部、112.阀口部、1121.阀口、113.端盖、1131.底壁部、11311.第二接口部、1132.底壁部、1133.底壁部、11331.第二接口部、12.第一接管部、13.第二接管部、15.阀体部、16.外壳、17.磁转子组件、171.磁转子、172.连接板、18.丝杆阀针组件、 181.丝杆、182.阀针、183.套筒部、184.端板部、185.凸台、186.弹簧、187.支撑部件、19.螺母组件、191.螺母、192.连接片
具体实施方式
为了使本领域的技术人员更好的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。
请参照图1，图1为本发明提供第一种实施例电子膨胀阀的结构示意图；
需要指出的是，本发明是针对一种具体电子膨胀阀结构进行说明，目的是对电子膨胀阀的阀座组件的结构进行改进，对于电子膨胀阀的其他部件，如磁转子组件、丝杆阀针组件、螺母组件、止动装置等部件这里不作限制与详细说明。本发明并不对上述部件的结构进行特别限定，本领域技术人员根据本发明披露的技术方案，可以将其应用于所有类似的电子膨胀阀结构。
电子膨胀阀1具有阀座组件11，阀座组件11固定连接有第一接管部12和第二接管部13，阀座组件11的结构会在下文进行具体描述，在阀座组件11相对靠上一侧，设置有阀体部15，阀体部大致呈底部开口的杯型，其底部具有开口，并与阀座组件11固定连接，具体而言，可以在阀座组件11上端设置台阶，并将阀体部15的底部开口与该台阶配合，并将两者焊接进行固定，或采用其他形式将两者焊接固定，本发明不限定阀体部15与阀座组件11连接的具体配合结构。
在阀体部15的上方，还设置有外壳16，外壳16与阀体部15可以采用焊接的方式进行固定，这样，外壳16、阀体部15、阀座组件11基本形成一个位于其三者之内的空间。
值得注意的是，对电子膨胀阀来说，阀体部15并不是必须存在的，当不存在阀体部15时，也可以采用外壳16直接与阀座组件11固定连接的方式。
在外壳16、阀体部15以及阀座组件11等所限定形成的空间内，设置有磁转子组件17、丝杆阀针组件18、螺母组件19，磁转子组件17能因电磁线圈的电磁力而转动，磁转子组件17包括磁转子171以及与磁转子171固定连 接或一体设置的连接板172，丝杆阀针组件18包括丝杆181，丝杆181与连接板172固定连接，这样，丝杆181通过连接板172与磁转子组件17连接成为一个整体，具体的，丝杆181与连接板172可以采用焊接的方式固定连接。
丝杆阀针组件还包括阀针182、套筒部183、端板部184、凸台185、弹簧186以及支撑部件187，丝杆181与阀针182之间通过套筒部183实现浮动连接，套筒部183大体呈底部开口的杯形，其底部有开口，阀针182穿过该开口，进入第一阀座腔A(下文会具体描述)与阀口1121配合用于调节。即，在电子膨胀阀工作过程中，阀针182可以相对套筒部183在一定的行程内上下移动，但无法脱离套筒部183的限制。在套筒部183的顶部设置有端板部184，端板部184设置有端板推力面，丝杆181的下端部固定连接有凸台185，凸台185上设置有凸台推力面，在凸台推力面的背部，还设置有弹簧186，并由支撑部件187进行支撑,在装配时，可以先将凸台185与丝杆181固定连接后放入套筒部183的内部空间中，然后再将端板部184与套筒部183采用焊接等方式进行固定。这样，凸台推力面与端板推力面形成了对向设置，并且同时将套筒部183悬挂在丝杆181上。套筒部183与丝杆181之间无法脱离，但可以作相对运动。本文所述的脱离，是指套筒部183与丝杆181之间分离成彼此没有任何限制的两个单独部件，而不仅仅指两者没有物理上的接触。
螺母组件19包括螺母191以及连接片192，螺母191与连接片192固定连接或可以为一体结构，螺母191通过金属制的连接片192固定在外壳16与阀体部15所围成的空间内。具体而言，螺母191可以采用非金属材料与连接片192一体注塑成形，并将连接片192与阀体部15通过焊接的方式进行固定连接。
螺母191具有沿其轴向贯通的通孔，并在该通孔的内部设置内螺纹，与之相应的，丝杆181的外周面上设置有一段外螺纹，这样当磁转子组件17作旋转运动时，与之联动的丝杆181在螺纹副的作用下，在作旋转运动的同时，还相对螺母组件19作升降运动，从而带动阀针182作升降运动。
需要说明的是，上述关于阀座组件11上方的各部件结构描述，仅是以某一特定结构使本领域技术人员更方便理解电子膨胀阀的基本工作原理， 并不意味着对本发明保护范围的限制，本发明的技术方案也可应用于其他动作结构的电子膨胀阀。
请参考图1至图2，图1为本发明提供第一种实施例电子膨胀阀的截面示意图；图2为图1中阀座组件的截面示意图；
在第一种实施例中，阀座组件11的外壁部11A包括周壁部111，周壁部111包括第一周壁部1111，其中，阀口部112和第一周壁部1111可以采用一体材料加工形成，两者为一体结构，阀口部112和第一周壁部1111也可以采用分别加工再焊接固定或紧配的方式，为描述方便，下面将阀口部112和第一周壁部1111一体或固定连接的部件统称为第一阀座部，第一阀座部大体呈杯型，阀口部112具有阀口1121，当阀针182作升降运动时，阀针182会远离或者接近阀口部112，使得阀口1121与阀针182之间的流通面积发生变化，从而控制冷媒从阀口1121通过的流量大小。周壁部111包括第二周壁部1112，外壁部11A包括底壁部1131，第二周壁部1112和底壁部1131可以采用一体结构，第二周壁部1112和底壁部1131也可以采用分别加工再焊接固定或紧配的方式，为描述方便，下面将底壁部1131和第二周壁部1112一体或固定形成的部件统称为第二阀座部，第二阀座部大体呈杯型。第二周壁部1112和底壁部1131两者为一体结构，在本实施例中两者没有严格区分，底壁部1131指底部区域，第二周壁部1112指周边区域。
在本说明书中，第一周壁部1111包括与第一阀座腔A相对应的外壁部11A部分，及与第一阀座腔A相对应的外壁部11A部分一体的与阀口部112相对应的外壁部11A部分，第二周壁部1112包括第二阀座腔B相应的外壁部11A部分，及与第一阀座腔A相对应的外壁部11A部分一体的其余的外壁部11A部分，第一周壁部1111、第二周壁部1112只是为了说明方便而引入，仅是使本领域技术人员更方便理解，并不意味着对保护范围的限制。
第一阀座部和第二阀座部可以采用焊接等形式固定连接，具体的，可以在第一阀座部底部设置台阶部，第二阀座部的第二周壁部1112与台阶部相配合，再将两者焊接固定；对于第一阀座部和第二阀座部焊接固定的方式，本实施例不作特别限定。
这样，电子膨胀阀包括两个腔体，分别为第一阀座腔A和第二阀座腔B，第一阀座腔A位于阀口部112的上方，或者至少绝大部分的第一阀座腔A位于阀口部112的上方；第二阀座腔B位于阀口部112的下方，或者至少绝大部分的第二阀座腔B位于阀口部112的下方。当阀针182未关闭阀口1121时，第二阀座腔B通过阀口1121能够连通所述第一阀座腔A。
在第一周壁部1111，设置有用于与第一接管部12配合固定连接的第一接口部11111，通常，第一接管部12与阀座组件11在第一接口部11111部位采用焊接的方式固定连接，在底壁部1131，设置有用于与第二接管部13配合固定连接的第二接口部11311，第二接管部13与阀座组件11也可以采用焊接的方式固定连接，此时，第一接管部12大部分位于阀口部112上方或全部位于阀口部112上方，第一接口部11111大部分位于阀口部112上方或全部位于阀口部112上方，第二接管部13与第二接口部11311位于阀口部112的下方。在冷媒经第一接管部向第二接管部方向流动时，第二阀座腔B大于阀口部位，具体说第二阀座腔B靠近阀口部的部位大于阀口部位或者说第二阀座腔B的平均通径大于阀口的通径，这样，当冷媒从第一阀座腔A通过阀口1121进入第二阀座腔B时，冷媒的流通路径就处于快速放大的状态，能够有效地降低流体的流速和压力，从而改善冷媒通过时的噪音。本实施例的阀座组件11的外壁部11A包括第一阀座部的外壁部11A部分与端盖。本实施例的阀座组件11的外壁部11A包括第一阀座部的外壁部11A部分与第二阀座部。
阀座组件11可以是其他结构形式，第二接口部11311除了设置于底壁部1131，还可以设置于周壁部111，如图3、图4所示，图3为第一种实施例另一种电子膨胀阀的截面示意图；图4为图3中阀座组件的截面示意图；具体地，阀座组件111包括第一阀座部与第二阀座部，第一阀座部与第二阀座部通过焊接固定连接，第一接管部12、第二接管部13与阀座组件11均通过焊接固定连接；第一阀座部包括第一周壁部1111与阀口部112，第二阀座部包括第二周壁部1112与底壁部1131，第一周壁部1111与阀口部112为一体结构，第二周壁部1112与底壁部1131为一体结构。本实施例的第二接口部11311大部分位于第二周壁部1112，有少部分位于第一周壁部1111，或者说 第二接口部11311设置于阀座组件11的周壁部111。此时，第二接管部13从阀座组件11的侧面引出，此时，第一接管部12至少大部分位于阀口部112上方，第二接管部13至少大部分位于阀口部112下方，第一接管部12的内腔与第一阀座腔A直接连通，第二接管部13的内腔与第二阀座腔B直接连通，在阀口导通时，第一接管部12的内腔与第二接管部13的内腔通过第一阀座腔A、阀口1121、第二阀座腔B连通。
第二阀座腔B的内径大于第二接管部13的内径，阀口1121的内径小于第二阀座腔B的内径，由于阀口1121的形状可能存在多种结构形式，即对于整个阀口1121来说，可能存在多个不同的内径，在本说明书中，阀口1121的内径为阀口1121最小处的内径。当第二阀座腔B为规则的圆柱形腔体时，第二阀座腔B的内径为第二阀座腔B的内径，当第二阀座腔B的形状可能不规则，可以是倒的圆台状、台阶状或者几种结构组合。在内部为非标准圆柱形时，第二阀座腔B以通径表述。当第二接管部13扩口或者缩口后跟阀座组件11固定连接时，第二接管部13的内径为第二接管部13扩口或者缩口前的内径，或者第二接管部13的截面为非标准圆形时，称之为第二接管部13的通径。
通过以上设置，第一接管部12与外壁部11A固定连接，第一接管部12与所述外壁部11A的连接部位相对靠近所述第一阀座腔A，第二接管部13与所述外壁部11A固定连接，第二接管部13与外壁部11A的连接部位相对靠近第二阀座腔B，第二阀座腔B相对靠近阀口部112处的通径大于第二接管部13的通径，所述阀口1121的通径可以小于所述第二阀座腔B的通径，也可以设置为第二阀座腔B的平均通径大于所述第二接管部13的通径，阀口1121的通径小于第二阀座腔B的通径，阀口1121的通径小于第二接管部13的通径。
上述电子膨胀阀包括第一阀座腔A和第二阀座腔B，冷媒在一个流动方向流动时，由第一阀座腔A通过阀口部112的阀口1121后进入第二阀座腔B，由于第二阀座腔B大于第二接管部13，且大于阀口1121的通径，冷媒在通过阀口1121后会降低流速和压力，从而改善电子膨胀阀通过时的噪音。本 实施例的阀座组件11的外壁部11A包括第一阀座部的外壁部11A部分与第二阀座部。
请参考图5至图6，图5为第二种实施例电子膨胀阀截面示意图；图6为图5中阀座组件11的截面示意图；阀座组件11包括主阀座110与端盖113，主阀座110与端盖113分别加工并通过焊接固定连接形成阀座组件11；主阀座110包括主周壁部1113与阀口部112，主周壁部1113与阀口部112为一体结构；端盖113包括底壁部1132与副周壁部，底壁部1132与副周壁部为一体结构。本实施例阀座组件11的外壁部11A包括主周壁部1113与端盖113，本实施例中周壁部111包括主阀座110的周壁部111即主周壁部1113与端盖113的周壁部111部分，其中，主周壁部1113与阀口部112为同一材料经加工形成的一体结构，主周壁部1113与阀口部112也可以采用分别加工，再焊接或过盈压配等方式固定连接，阀口部112具有阀口1121。在主周壁部1113的下端，与端盖113固定连接主阀座110与端盖113固定连接的形式，可以采用主周壁部1113与端盖113的副周壁部焊接的方式，也可以在主周壁部1113底部设置台阶，台阶与端盖113的外缘相配合，再将两者通过焊接的形式固定连接对于主阀座110和端盖113固定连接的形式，本实施例不作特别限定。
同样地电子膨胀阀包括两个腔体，分别为第一阀座腔A和第二阀座腔B，第一阀座腔A位于阀口部112的上方或至少大部分位于阀口部112的上方，第二阀座腔B位于阀口部112的下方或至少大部分位于阀口部112的下方，当阀针182未关闭阀口1121时，第二阀座腔B通过阀口1121能够连通第一阀座腔A。
阀座组件11在主阀座110的相对上侧设置有第一接口部11131，第一接口部11131至少大部分位于阀口部112的上方或者说第一接口部11131设置于主周壁部1113的相对靠上侧，阀座组件11与第一接管部12在第一接口部11131部位采用焊接的方式固定连接；阀座组件11在主阀座110的相对下侧设置有第二接口部11132，第二接口部11132至少大部分位于阀口部112的下方，阀座组件11与第二接管部13在第二接口部11132部位采用焊接的方式固定连接第二接口部11132，此时，第二接管部13从阀座组件11的侧面引出。此时，第一接管部12位于阀口部112上方或至少大部分位于阀口部112上方， 第二接管部13位于阀口部112下方或至少大部分位于阀口部112下方。本实施例的阀座组件11的外壁部11A不是由单个零件形成，阀座组件11的外壁部11A包括主阀座110的一部分与端盖113；第一周壁部1111设置于主阀座110的相对上侧，第二周壁部1112大部分设置于主阀座110即设置于主阀座110的相对下侧，第二周壁部1112还有一部分位于端盖113。
阀座组件11的结构还可以如图7至图8所示，图7为第二种实施例另一种电子膨胀阀截面示意图；图8为图7中阀座组件的截面示意图；阀座组件11包括主阀座110与端盖113，主阀座110同样包括主周壁部1113与阀口部112，端盖113包括底壁部1132与副周壁部(图中未标示)。第二接口部11132除了可以设置于阀座组件11的外壁部11A的位于阀口部112以下的周壁部111，还可以设置于底壁部1132，当第二接口部11132设置于底壁部1132时，为了使得第二接口部11132与第二阀座部的配合更加牢固，可以在底壁部1132设置沿其第二接口部11132外周向下延伸的延伸部，延伸部与第二接管部13相配合，具体的，第二接管部13外套于延伸部外周，或延伸部外套于第二接管部13外周，此外，如前所述，当底壁部1132外缘向上延伸到一定程度时，第二接口部11132甚至可以设置于底壁部1132的外缘面，此时，第一接管部12大体位于阀口部112上方，第二接管部13基本位于阀口部112下方。
第二阀座腔B大于第二接管部13，即第二阀座腔B的内径大于第二接管部13的内径或者说第二阀座腔B的通径大于第二接管部13的通径，阀口1121的内径小于第二阀座腔B的内径或者阀口1121的最小处的通径小于第二阀座腔B的通径，具体地，可以是第二阀座腔B靠近阀口部112处的通径大于第二接管部13的通径或者第二阀座腔B的平均通径大于第二接管部13的通径，第二阀座腔B的通径大于阀口1121最小处的通径，阀口1121的形状可能存在多种结构形式，即对于整个阀口1121来说，可能存在多个不同的内径或通径，阀口1121的通径为阀口1121最小处的通径。当第二阀座腔B基本为规则的圆柱形腔体时，第二阀座腔B的内径为第二阀座腔B的内径，当第二阀座腔B不规则，第二阀座腔B可以是如倒的圆台状、台阶状或者几种结构组合。当第二接管部13扩口或者缩口后跟阀座组件11固定连接时， 第二接管部13的内径指第二接管部13扩口或者缩口前的内径，或者第二接管部13的截面为非标准圆形时，称之为第二接管部13的通径。
上述电子膨胀阀包括第一阀座腔A和第二阀座腔B，冷媒在一个流动方向流动时，冷媒由第一阀座腔A通过阀口部的阀口后进入第二阀座腔B，由于第二阀座腔B大于第二接管部13，且大于阀口1121，冷媒在通过阀口1121后会降低流速和压力，从而改善冷媒通过电子膨胀阀时的噪音。
阀座组件11的外壁部11A、底壁部1132是相对于阀座组件11而言的，不是由单个零件形成。
阀座组件11还可以是其他结构，如图9、图10，图9为本发明提供第三种实施例电子膨胀阀截面示意图；图10为图9中阀座组件的截面示意图；阀座组件11包括外壁部11A与阀口部112，阀座组件11的外壁部11A包括周壁部111与底壁部1133，本实施例的周壁部111与底壁部1133为一体结构，其中，周壁部111大致呈筒状，阀口部112设置有阀口1121，阀口部112与外壁部11A采用分别加工，再焊接或过盈压配的方式固定连接。
通过以上设置，电子膨胀阀以阀口部112区分形成了两个腔体，分别为第一阀座腔A和第二阀座腔B，第一阀座腔A相对位于阀口部112的上方，第二阀座腔B位于阀口部112的下方，当阀针182未关闭阀口1121时，阀口1121能够连通所述第一阀座腔A和第二阀座腔B。
在阀座组件11的外壁部11A相对靠上的周壁部111，设置有第一接口部11141，第一接管部12与阀座组件11在第一接口部11141采用焊接的方式固定连接；在阀座组件11的外壁部11A相对靠下的周壁部111，设置有第二接口部11331，第二接管部13与阀座组件11在第二接口部11331采用焊接的方式固定连接，此时，第一接管部12至少大部分位于阀口部112上方，第二接管部13全部或至少大部分位于阀口部112下方。
还可以对该实施例的阀座组件11作相应改变，如图11至图12，图11为第三种实施例另一种电子膨胀阀截面示意图；图12为图11中阀座组件的截面示意图；第二接口部11331除了可以设置于周壁部111位于阀口部112以下的部分，还可以设置于底壁部1133，当第二接口部11331设置于底壁部1133时，为了使得第二接口部11331与阀座组件11的配合固定更加牢固，可以在 底壁部1133设置沿第二接口部11331外周向下延伸的延伸部，延伸部与第二接管部13相配合，具体的，第二接管部13外套于延伸部外周，或延伸部外套于第二接管部13外周，此时，第一接管部12至少大部分位于阀口部112上方，第二接管部13至少大部分位于阀口部112下方。
第二阀座腔B大于第二接管部13，即第二阀座腔B的内径大于第二接管部13的内径或者说第二阀座腔B的通径大于第二接管部13的通径，阀口1121的内径小于第二阀座腔B的内径或者阀口1121的最小处的通径小于第二阀座腔B的通径，具体可以是第二阀座腔B靠近阀口部112处的通径大于第二接管部13的通径或者第二阀座腔B的平均通径大于第二接管部13的通径，第二阀座腔B的通径大于阀口最小处的通径，阀口1121的形状可能存在多种结构形式，即对于整个阀口1121来说，可能存在多个不同的内径或通径，阀口1121的通径为阀口1121最小处的通径。当第二阀座腔B基本为规则的圆柱形腔体时，第二阀座腔B的内径为第二阀座腔B的内径，当第二阀座腔B不规则，第二阀座腔B可以是如倒的圆台状、台阶状或者几种结构组合。当第二接管部13扩口或者缩口后跟阀座组件11固定连接时，第二接管部12的内径指第二接管部12扩口或者缩口前的内径，或者第二接管部12的截面为非标准圆形时，称之为第二接管部12的通径。上述电子膨胀阀包括第一阀座腔A和第二阀座腔B，冷媒在一个流动方向流动时，冷媒由第一阀座腔A通过阀口部的阀口后进入第二阀座腔B，由于第二阀座腔B大于第二接管部13，且大于阀口1121，冷媒在通过阀口1121后会降低流速和压力，从而改善冷媒通过电子膨胀阀时的噪音。
本发明的说明书和权利要求书记载的“周壁部”是指阀座组件整体的周壁部分，既可以是一体结构也可以是两个或以上部件固定连接而成，而“第一周壁部”和“第二周壁部”则是为了便于描述分体组装而成的阀座组件所引入的概念，第一周壁部和第二周壁部均是构成周壁部的一部分，但周壁部除了包括第一周壁部和第二周壁部，还可以包括其他部件或其他部分，比如第二实施例中，端盖也包括一部分周壁部。第一周壁部和第二周壁部的典型结构记载在上述的各相关实施例中，当然在上述实施例的基础上，还可以对其形状作出简单的改变而获得新的实施例。
本发明的说明书和权利要求书中，“阀口部”指设置阀口部位的区域或相对靠近阀口的相对中部区域。“底壁部”指阀座组件中与阀口相对设置的底部区域。本文中用“阀口部”和“底壁部”的名称，并不意味着“阀口部”和“底壁部”必须是一个独立的零部件，比如在第二实施例中，底壁部就形成于端盖的一部分。
需要说明的是，本实施例所提及的上、下、左、右等方位名词，均是以说明书附图作为基准，为便于描述而引入的；以及部件名称中的“第一”、“第二”等序数词，也是为了便于描述而引入的，并不意味着对部件的任何次序作出任何的限定，另外，由于上述三种实施例所提供的各零部件之间的某些部位的功能相同，故本说明书对这些部位采用统一命名的方式。
以上对相关技术方案所提供的电子膨胀阀以及阀座组件进行了详细介绍，本文中应用了具体个例进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明的技术方案进行组合或若干改进和修饰，这些组合、改进和修饰也落入本发明权利要求的保护范围内。

Claims (8)

  1. 电子膨胀阀，其特征在于，包括阀座组件(11)，第一接管部(12)以及第二接管部(13)，所述阀座组件(11)包括外壁部(11A),所述阀座组件(11)包括设有阀口(1121)的阀口部(112),所述电子膨胀阀包括第一阀座腔(A)以及第二阀座腔(B)，所述第一阀座腔(A)位于所述阀口部(112)上方，所述第二阀座腔(B)位于所述阀口部(112)下方，所述阀口(1121)能够连通所述第一阀座腔(A)以及第二阀座腔(B)，所述第一接管部(12)与位于所述阀口部(112)上方的外壁部(11A)固定连接，所述第二接管部(13)与位于所述阀口部(112)下方的外壁部(11A)固定连接，所述第二阀座腔(B)的内径大于所述第二接管部(13)的内径，所述阀口(1121)的内径小于所述第二阀座腔(B)的内径。
  2. 电子膨胀阀，其特征在于，包括阀座组件(11)，第一接管部(12)以及第二接管部(13)，所述阀座组件(11)包括外壁部(11A),所述阀座组件(11)包括设有阀口(1121)的阀口部(112),所述电子膨胀阀包括第一阀座腔(A)以及第二阀座腔(B)，所述第一阀座腔(A)至少大部分位于所述阀口部(112)的上方，所述第二阀座腔(B)至少大部分位于所述阀口部(112)的下方，所述阀口(1121)能够连通所述第一阀座腔(A)以及第二阀座腔(B)，所述第一接管部(12)与所述外壁部(11A)固定连接，所述第一接管部(12)与所述外壁部(11A)的连接部位相对靠近所述第一阀座腔(A)，所述第二接管部(13)与所述外壁部(11A)固定连接，所述第二接管部(13)与所述外壁部(11A)的连接部位相对靠近所述第二阀座腔(B)，所述第二阀座腔(B)相对靠近所述阀口部(112)处的通径大于所述第二接管部(13)的通径，所述阀口(1121)的通径小于所述第二阀座腔(B)的通径。
  3. 电子膨胀阀，其特征在于，包括阀座组件(11)，第一接管部(12)以及第二接管部(13)，所述阀座组件(11)包括外壁部(11A),所述阀座组件(11)包括设有阀口(1121)的阀口部(112),所述电子膨胀阀包括第一阀座腔(A)以及第二阀座腔(B)，所述第一阀座腔(A)至少大部分位于所述阀口部(112)的上方，所述第二阀座腔(B)至少大部分位于所述阀口部(112)的下方，所述阀口(1121)能够连通所述第一阀座腔(A)以及第二阀座腔(B)， 所述第一接管部(12)与所述外壁部(11A)固定连接，所述第一接管部(12)与所述外壁部(11A)的连接部位相对靠近所述第一阀座腔(A)，所述第二接管部(13)与所述外壁部(11A)固定连接，所述第二接管部(13)与所述外壁部(11A)的连接部位相对靠近所述第二阀座腔(B)，所述第二阀座腔(B)的平均通径大于所述第二接管部(13)的通径，所述阀口(1121)的通径小于所述第二阀座腔(B)的通径，所述阀口(1121)的通径小于所述第二接管部(13)的通径。
  4. 根据权利要求1-3任一所述的电子膨胀阀，其特征在于，所述外壁部(11A)包括周壁部(111),所述周壁部(111)包括第一周壁部(1111)，所述第一周壁部(1111)与所述阀口部(112)为一体结构或所述第一周壁部(1111)与所述阀口部(112)固定连接，所述阀座组件(11)在所述第一周壁部(1111)设置有第一接口部，所述第一接管部(12)与所述阀座组件(11)在所述第一接口部部位固定连接；所述周壁部(111)包括第二周壁部(1112)，所述外壁部(11A)包括底壁部，所述阀座组件(11)在所述第二周壁(1112)部或所述底壁部设置有第二接口部，所述第二接管部(13)与所述阀座组件在所述第二接口部部位固定连接。
  5. 根据权利要求4所述的电子膨胀阀，其特征在于，所述阀座组件(11)包括第一阀座部与第二阀座部，所述第一阀座部与第二阀座部通过焊接固定连接；所述第一阀座部包括所述第一周壁部(1111)与阀口部(112)，所述第二阀座部包括所述第二周壁部(1112)与底壁部，所述第一接口部位于所述第一周壁部(1111)，所述第二接口部位于所述底壁部，所述第一接管部(12)与所述第一阀座部通过焊接固定连接，所述第二接管部(13)与所述第二阀座部通过焊接固定连接，所述第二接口部至少大部分位于所述第二阀座腔(B)下方，所述第二接口部与所述阀口部(112)相对设置。
  6. 根据权利要求1-4任一所述的电子膨胀阀，其特征在于，所述阀座组件(11)包括主阀座(110)与端盖(113)，所述主阀座(110)与端盖(113)通过焊接固定连接，所述主阀座(110)包括主周壁部(1113)，所述外壁部(11A)包括所述主周壁部(1113)与所述端盖(113)，所述端盖(113)包括底壁部，所述阀口部(112)与所述主周壁部(1113)为一体结构或所述阀口部(112)与 所述主周壁部(1113)固定连接，所述第一接口部位于所述主周壁部(1113)，所述第一接口部至少大部分位于所述阀口部(112)的上方，所述第二接口部位于所述底壁部，所述第二接口部位于所述阀口部(112)的下方。
  7. 根据权利要求1-3任一所述的电子膨胀阀，其特征在于，所述阀座组件(11)包括所述外壁部(11A)与所述阀口部(112)，所述外壁部(11A)为一体结构，所述外壁部(11A)与所述阀口部(112)紧配合或通过焊接固定设置，所述外壁部(11A)包括周壁部(111)与底壁部，所述第一接口部位于所述周壁部(111)，所述第一接口(11141)部至少大部分位于所述阀口部(112)的上方，所述第二接口部位于所述底壁部，所述第二接口部位于所述阀口部(112)的下方；所述第一接管部(12)的内腔与所述第一阀座腔(A)直接连通，所述第二接管部(13)的内腔与所述第二阀座腔(B)直接连通。
  8. 根据权利要求5-7任一所述的电子膨胀阀，其特征在于，所述阀口部(112)位于所述阀座组件(11)在轴向的中部区域，所述底壁部与所述阀口部(112)相对设置，所述第二接口部与所述阀口部(112)相对设置，所述阀口部(112)的通径小于所述第二接口部的通径，所述第二阀座腔(B)的通径大于所述第二接口部的通径。
PCT/CN2019/113233 2018-10-27 2019-10-25 电子膨胀阀 WO2020083362A1 (zh)

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