JP7348318B2 - Valve core assembly and electronic expansion valve including the same - Google Patents

Valve core assembly and electronic expansion valve including the same Download PDF

Info

Publication number
JP7348318B2
JP7348318B2 JP2021577140A JP2021577140A JP7348318B2 JP 7348318 B2 JP7348318 B2 JP 7348318B2 JP 2021577140 A JP2021577140 A JP 2021577140A JP 2021577140 A JP2021577140 A JP 2021577140A JP 7348318 B2 JP7348318 B2 JP 7348318B2
Authority
JP
Japan
Prior art keywords
rod segment
annular structure
valve core
core assembly
flange
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
JP2021577140A
Other languages
Japanese (ja)
Other versions
JP2022545998A (en
Inventor
宇辰 賀
晶 馮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Dunan Artificial Environment Co Ltd
Original Assignee
Zhejiang Dunan Artificial Environment Co Ltd
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 Zhejiang Dunan Artificial Environment Co Ltd filed Critical Zhejiang Dunan Artificial Environment Co Ltd
Publication of JP2022545998A publication Critical patent/JP2022545998A/en
Application granted granted Critical
Publication of JP7348318B2 publication Critical patent/JP7348318B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • 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
    • F16K1/02—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 with screw-spindle
    • F16K1/04—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 with screw-spindle with a cut-off member rigid with the spindle, e.g. main 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
    • 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
    • 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
    • F16K1/38—Valve members of conical shape
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Description

本出願はバルブの技術分野に関し、具体的には、弁芯アセンブリ及びそれを有する電子膨張弁に関する。 TECHNICAL FIELD This application relates to the technical field of valves, and specifically to a valve core assembly and an electronic expansion valve having the same.

従来の電子膨張弁の弁芯アセンブリにおいて、ブッシュ又は軸受は締り嵌めによってスクリュに装着され、ブッシュとスクリュとは更にレーザ溶接によって一体に固定される。スクリュ及びスピンドルの同軸度は取り付け位置に大きく影響され、電子膨張弁は装着後にナット及び弁口等の構造に同軸度誤差が発生しやすく、これにより、使用時にスピンドルと弁口との間に引っ掛かりが発生すると同時に摩擦力が大きくなり、開弁性能に影響を与えてしまう。 In conventional electronic expansion valve core assemblies, the bushing or bearing is attached to the screw by an interference fit, and the bushing and screw are further secured together by laser welding. The coaxiality of the screw and spindle is greatly affected by the installation position, and after installation of electronic expansion valves, coaxiality errors tend to occur in the structure of the nut and valve port, etc., and this can cause problems such as getting caught between the spindle and the valve port during use. At the same time as this occurs, the frictional force increases, which affects valve opening performance.

本出願は、従来技術における、電子膨張弁が使用時に引っ掛かりやすいという問題を解決するために、弁芯アセンブリ及びそれを有する電子膨張弁を提供している。 The present application provides a valve core assembly and an electronic expansion valve having the same in order to solve the problem in the prior art that the electronic expansion valve is easily caught during use.

上記の問題を解決するために、本出願の一態様によれば、本出願は、一体成形構造であり、第１ロッドセグメント及び第１ロッドセグメントの一端に設けられるフランジ構造を含み、フランジ構造の径方向寸法が第１ロッドセグメントの径方向寸法より大きいスクリュと、第１ロッドセグメントが内部に設けられる環状構造であって、第１ロッドセグメントの周面と環状構造の内壁との間に隙間を有し、フランジ構造が環状構造の一端と位置制限し合い、環状構造がブッシュ又は軸受である環状構造と、を含む弁芯アセンブリを提供している。 To solve the above problem, according to one aspect of the present application, the present application includes a first rod segment and a flange structure provided at one end of the first rod segment, which is an integrally molded structure, and the flange structure includes a first rod segment and a flange structure provided at one end of the first rod segment. A screw having a radial dimension larger than the radial dimension of the first rod segment and an annular structure in which the first rod segment is provided, the annular structure having a gap between the circumferential surface of the first rod segment and the inner wall of the annular structure. a valve core assembly including an annular structure having a flange structure in position-limiting contact with one end of the annular structure, the annular structure being a bushing or a bearing.

更に、フランジ構造はラッパ口状である。 Furthermore, the flange structure is trumpet-shaped.

更に、第１ロッドセグメントは捨て孔を有し、捨て孔はフランジ構造の孔に連通される。 Additionally, the first rod segment has a sacrificial hole that communicates with a hole in the flange structure.

更に、フランジ構造は打抜成形構造である。 Additionally, the flange structure is a stamped structure.

更に、スクリュは第２ロッドセグメントを更に含み、第２ロッドセグメントは第１ロッドセグメントの他端に接続され、第２ロッドセグメントの直径は第１ロッドセグメントの直径より大きく、第２ロッドセグメントの端面は環状構造の他端と位置制限し合い、第２ロッドセグメントの端面とフランジ構造との距離は環状構造の軸方向寸法より大きい。 Furthermore, the screw further includes a second rod segment, the second rod segment is connected to the other end of the first rod segment, the diameter of the second rod segment is greater than the diameter of the first rod segment, and the end surface of the second rod segment is connected to the other end of the second rod segment. and the other end of the annular structure, and the distance between the end face of the second rod segment and the flange structure is greater than the axial dimension of the annular structure.

更に、弁芯アセンブリは、第２ロッドセグメントが内部に設けられる第１押圧スリーブであって、第２ロッドセグメントの周面と第１押圧スリーブの内壁との間に隙間を有し、第１押圧スリーブの端部が環状構造の端部と位置制限し合う第１押圧スリーブを更に含む。 Furthermore, the valve core assembly includes a first pressing sleeve in which a second rod segment is provided, a gap is formed between a circumferential surface of the second rod segment and an inner wall of the first pressing sleeve, and the first pressing sleeve has a gap between a peripheral surface of the second rod segment and an inner wall of the first pressing sleeve. The apparatus further includes a first pressing sleeve, the end of the sleeve interlocking with the end of the annular structure.

更に、環状構造がブッシュであり、ブッシュの外壁に第２位置制限段差を有する弁芯アセンブリは、一端がブッシュ上に嵌合され、且つ第２位置制限段差に当接される弾性部材と、弾性部材の他端が当接されるスピンドルと、を更に含む。 Further, the valve core assembly, in which the annular structure is a bush and has a second position-limiting step on the outer wall of the bush, includes an elastic member having one end fitted onto the bush and abutting the second position-limiting step; It further includes a spindle against which the other end of the member abuts.

更に、環状構造が軸受である弁芯アセンブリは、端部が軸受に当接され、且つ外壁に第３位置制限段差を有する第２押圧スリーブと、一端が第２押圧スリーブ上に嵌合され、且つ第３位置制限段差に当接される弾性部材と、弾性部材の他端が当接されるスピンドルと、を更に含む。 Further, the valve core assembly in which the annular structure is a bearing has a second pressing sleeve whose end abuts against the bearing and has a third position-limiting step on the outer wall; and one end is fitted onto the second pressing sleeve; The device further includes an elastic member that abuts the third position-limiting step, and a spindle that abuts the other end of the elastic member.

更に、第２押圧スリーブのフランジ構造に向けた一端はテーパ孔を有し、テーパ孔はフランジ構造を回避するために用いられる。 Furthermore, one end of the second pressing sleeve facing the flange structure has a tapered hole, which is used to avoid the flange structure.

本出願の別の態様によれば、上記の弁芯アセンブリを含む電子膨張弁を提供している。 According to another aspect of the present application, an electronic expansion valve is provided that includes the valve core assembly described above.

本出願の技術態様を適用すると、弁芯アセンブリにはスクリュ及び環状構造が設けられ、環状構造はブッシュ又は軸受であり、スクリュは一体成形構造であり、第１ロッドセグメント及び第１ロッドセグメントの一端に設けられるフランジ構造を含み、フランジ構造の径方向寸法は第１ロッドセグメントの径方向寸法より大きく、第１ロッドセグメントは環状構造内に設けられ、第１ロッドセグメントの周面と環状構造の内壁との間に隙間を有し、フランジ構造は環状構造の一端と位置制限し合う。スクリュと環状構造との間に隙間を有するため、スクリュは環状構造に対して可動であり、これにより、使用時に弁芯アセンブリにおける一部の構造が電子膨張弁のナット及び弁口等の構造の同軸度誤差に応じて自動的に適応的な位置調整を行うことができ、これにより、電子膨張弁が引っ掛かりやすいという問題を回避し、更には一部の構造間の摩擦力を低減して開弁性能を向上させることができる。 Applying the technical aspects of the present application, the valve core assembly is provided with a screw and an annular structure, the annular structure is a bushing or a bearing, the screw is an integrally molded structure, and the first rod segment and one end of the first rod segment. a flange structure provided within the annular structure, the radial dimension of the flange structure being greater than the radial dimension of the first rod segment, the first rod segment being disposed within the annular structure, and the first rod segment having a circumferential surface and an inner wall of the annular structure; There is a gap between the flange structure and one end of the annular structure. Due to the clearance between the screw and the annular structure, the screw is movable relative to the annular structure, which allows some structures in the valve core assembly to be removed from structures such as the nut and valve port of the electronic expansion valve during use. It can automatically make adaptive position adjustment according to the coaxiality error, which avoids the problem that the electronic expansion valve is easy to get stuck, and also reduces the friction force between some structures to open the valve. Valve performance can be improved.

本出願の一部を構成する明細書の図面は本出願に対する更なる理解を提供するためのものであり、本出願の模式的な実施例及びその説明は本出願を解釈するためのものであり、本出願を不適切に限定するものではない。 The drawings in the specification forming part of the present application are for the purpose of providing a further understanding of the present application, and the schematic embodiments of the present application and their description are for the purpose of interpreting the present application. , which are not intended to unduly limit this application.

本出願の実施例１によって提供される弁芯アセンブリの構成模式図を示す。1 shows a schematic diagram of the structure of a valve core assembly provided by Example 1 of the present application. FIG. 図１の部分拡大図を示す。2 shows a partially enlarged view of FIG. 1. FIG. 図１における弁芯アセンブリが電子膨張弁に適用された場合の構成模式図を示す。FIG. 2 shows a schematic configuration diagram when the valve core assembly in FIG. 1 is applied to an electronic expansion valve. 本出願の実施例２によって提供される弁芯アセンブリが電子膨張弁に適用された場合の構成模式図を示す。FIG. 6 shows a schematic diagram of the configuration when the valve core assembly provided by Example 2 of the present application is applied to an electronic expansion valve. 図４の部分拡大図を示す。A partially enlarged view of FIG. 4 is shown.

ここで、上記図面には以下の符号が含まれる。
１０ スクリュ、１１ 第１ロッドセグメント、１２ フランジ構造、１３ 捨て孔、１４ 第２ロッドセグメント、２０ 環状構造、３０ 第１押圧スリーブ、４０ 弁スリーブ、５０ 弾性部材、６０ スピンドル、７０ 第２押圧スリーブ、７１ テーパ孔。 Here, the following symbols are included in the above drawings.
Reference Signs List 10 screw, 11 first rod segment, 12 flange structure, 13 sacrificial hole, 14 second rod segment, 20 annular structure, 30 first pressing sleeve, 40 valve sleeve, 50 elastic member, 60 spindle, 70 second pressing sleeve, 71 Tapered hole.

以下、本出願の実施例における図面を参照して、本出願の実施例における技術態様について明確且つ完全に説明する。説明される実施例は本出願の一部の実施例にすぎず、全ての実施例ではないことは明らかである。以下の少なくとも１つの例示的な実施例についての説明は実際には例示にすぎず、本出願及びその適用又は使用に対するいかなる制限とされるものではない。本出願における実施例に基づいて当業者が創造的な労力なしに得られる全ての他の実施例は、いずれも本出願の保護の範囲に属する。 Hereinafter, technical aspects in the embodiments of the present application will be clearly and completely explained with reference to the drawings in the embodiments of the present application. It is clear that the described embodiments are only some, but not all, embodiments of the present application. The following description of at least one exemplary embodiment is illustrative in nature and is not to be construed as any limitation on the present application and its application or use. All other embodiments that can be obtained by a person skilled in the art without creative efforts based on the embodiments in this application fall within the scope of protection of this application.

図面に示すように、本出願の実施例１は、一体成形構造であり、第１ロッドセグメント１１及び第１ロッドセグメント１１の一端に設けられるフランジ構造１２を含み、フランジ構造１２の径方向寸法が第１ロッドセグメント１１の径方向寸法より大きいスクリュ１０と、第１ロッドセグメント１１が内部に設けられる環状構造２０であって、第１ロッドセグメント１１の周面と環状構造２０の内壁との間に隙間を有し、フランジ構造１２が環状構造２０の一端と位置制限し合い、環状構造２０がブッシュ又は軸受である環状構造２０と、を含む弁芯アセンブリを提供している。 As shown in the drawings, Embodiment 1 of the present application is an integrally molded structure, and includes a first rod segment 11 and a flange structure 12 provided at one end of the first rod segment 11, and the radial dimension of the flange structure 12 is A screw 10 larger than the radial dimension of the first rod segment 11 and an annular structure 20 in which the first rod segment 11 is provided, the screw being larger than the radial dimension of the first rod segment 11, and between the circumferential surface of the first rod segment 11 and the inner wall of the annular structure 20. A valve core assembly is provided that includes an annular structure 20 having a gap, a flange structure 12 in position-limiting contact with one end of the annular structure 20, and the annular structure 20 being a bushing or a bearing.

本出願の技術態様を適用すると、弁芯アセンブリにはスクリュ１０及び環状構造２０が設けられ、環状構造２０はブッシュ又は軸受であり、スクリュ１０は一体成形構造であり、第１ロッドセグメント１１及び第１ロッドセグメント１１の一端に設けられるフランジ構造を含み、フランジ構造の径方向寸法は第１ロッドセグメント１１の径方向寸法より大きく、第１ロッドセグメント１１は環状構造２０内に設けられ、第１ロッドセグメント１１の周面と環状構造２０の内壁との間に隙間を有し、フランジ構造は環状構造２０の一端と位置制限し合う。スクリュ１０と環状構造２０との間に隙間を有するため、スクリュ１０は環状構造２０に対して可動であり、これにより、使用時に弁芯アセンブリにおける一部の構造が電子膨張弁のナット及び弁口等の構造の同軸度誤差に応じて自動的に適応的な位置調整を行うことができ、これにより、電子膨張弁が引っ掛かりやすいという問題を回避し、更には一部の構造間の摩擦力を低減して開弁性能を向上させることができる。 Applying the technical aspects of the present application, the valve core assembly is provided with a screw 10 and an annular structure 20, the annular structure 20 is a bush or a bearing, the screw 10 is an integrally molded structure, and the first rod segment 11 and the annular structure 20 are provided. a flange structure provided at one end of the first rod segment 11, the radial dimension of the flange structure is larger than the radial dimension of the first rod segment 11, the first rod segment 11 is provided within the annular structure 20, and the first rod segment 11 includes a flange structure provided at one end of the first rod segment 11; A gap is provided between the circumferential surface of the segment 11 and the inner wall of the annular structure 20, and the flange structure and one end of the annular structure 20 are limited in position. Due to the clearance between the screw 10 and the annular structure 20, the screw 10 is movable with respect to the annular structure 20, which allows some structures in the valve core assembly to close together with the nut and valve opening of the electronic expansion valve during use. It can automatically make adaptive position adjustments according to the coaxiality error of other structures, which avoids the problem of electronic expansion valves being easily stuck, and even reduces the frictional force between some structures. It is possible to improve the valve opening performance by reducing the

本実施例において、フランジ構造１２はラッパ口状である。フランジ構造１２をラッパ口状にすると環状構造２０の着脱を容易にすることができ、更にはフランジ構造１２の加工成形が容易になる。選択的には、フランジ構造１２の側壁と第１ロッドセグメント１１の軸方向との間の夾角は４０度から５０度である。 In this embodiment, the flange structure 12 has a trumpet-like shape. When the flange structure 12 is made into a trumpet-shaped shape, the annular structure 20 can be easily attached and detached, and furthermore, the flange structure 12 can be easily processed and formed. Optionally, the included angle between the side wall of the flange structure 12 and the axial direction of the first rod segment 11 is between 40 degrees and 50 degrees.

本実施例において、フランジ構造１２は打抜成形構造である。打抜成形の形態を採用するとフランジ構造１２の加工成形を容易にすることができ、プロセスが簡単でありコストが低い。 In this embodiment, the flange structure 12 is a stamped structure. If the form of punching is adopted, the flange structure 12 can be easily processed and formed, and the process is simple and the cost is low.

更に、第１ロッドセグメント１１は捨て孔１３を有し、捨て孔１３はフランジ構造１２の孔に連通される。捨て孔１３を設けることでフランジ構造１２の成形が容易になる。捨て孔１３は打抜成形するツールを回避するために用いられる。 Furthermore, the first rod segment 11 has a sacrificial hole 13 that communicates with a hole in the flange structure 12 . By providing the sacrificial holes 13, the flange structure 12 can be easily formed. The sacrificial hole 13 is used to avoid the stamping tool.

本実施例において、スクリュ１０は第２ロッドセグメント１４を更に含み、第２ロッドセグメント１４は第１ロッドセグメント１１の他端に接続され、第２ロッドセグメント１４の直径は第１ロッドセグメント１１の直径より大きく、第２ロッドセグメント１４の端面は環状構造２０の他端と位置制限し合い、第２ロッドセグメント１４の端面とフランジ構造１２との距離は環状構造２０の軸方向寸法より大きい。このようにすることで、第２ロッドセグメント１４及びフランジ構造１２によって環状構造２０の両端のそれぞれに対して位置制限を行うことができ、更には第２ロッドセグメント１４の端面とフランジ構造１２との距離が環状構造２０の軸方向寸法より大きいため、環状構造２０とスクリュ１０とが軸方向において一定の相対的な変位を発生できるようにして、位置調整を行い、装着誤差に適合させることができる。 In this embodiment, the screw 10 further includes a second rod segment 14 , the second rod segment 14 is connected to the other end of the first rod segment 11 , and the diameter of the second rod segment 14 is equal to the diameter of the first rod segment 11 . The end face of the second rod segment 14 is in a limited position with the other end of the annular structure 20, and the distance between the end face of the second rod segment 14 and the flange structure 12 is greater than the axial dimension of the annular structure 20. By doing so, the positions of both ends of the annular structure 20 can be restricted by the second rod segment 14 and the flange structure 12, and furthermore, the position between the end face of the second rod segment 14 and the flange structure 12 can be restricted. Since the distance is greater than the axial dimension of the annular structure 20, the annular structure 20 and the screw 10 can generate a constant relative displacement in the axial direction to adjust the position and adapt to installation errors. .

本実施例において、弁芯アセンブリは、第２ロッドセグメント１４が内部に設けられる第１押圧スリーブ３０であって、第２ロッドセグメント１４の周面と第１押圧スリーブ３０の内壁との間に隙間を有し、第１押圧スリーブ３０の端部が環状構造２０の端部と位置制限し合う第１押圧スリーブ３０を更に含む。第１押圧スリーブ３０は環状構造２０の位置を制限する役割を果たすことができる。選択的には、第１押圧スリーブ３０の外壁に第１位置制限段差を有し、弁芯アセンブリは弁スリーブ４０を更に含み、第１押圧スリーブ３０の一部は弁スリーブ４０内に設けられ、第１位置制限段差は弁スリーブ４０の端面に当接されて位置決め及び位置制限を行う。本実施例において、環状構造２０はブッシュである。 In this embodiment, the valve core assembly is a first pressing sleeve 30 in which the second rod segment 14 is provided, and there is a gap between the circumferential surface of the second rod segment 14 and the inner wall of the first pressing sleeve 30. The apparatus further includes a first pressing sleeve 30 having an end portion of the first pressing sleeve 30 that limits the position of an end portion of the annular structure 20 . The first pressing sleeve 30 can serve to limit the position of the annular structure 20. Optionally, the outer wall of the first pressing sleeve 30 has a first position-limiting step, the valve core assembly further includes a valve sleeve 40, and a portion of the first pressing sleeve 30 is disposed within the valve sleeve 40; The first position limiting step is brought into contact with the end surface of the valve sleeve 40 to perform positioning and position limiting. In this example, the annular structure 20 is a bush.

本実施例において、環状構造２０がブッシュであり、ブッシュの外壁に第２位置制限段差を有する弁芯アセンブリは、一端がブッシュ上に嵌合され、且つ第２位置制限段差に当接される弾性部材５０と、弾性部材５０の他端が当接されるスピンドル６０と、を更に含む。スピンドル６０は電子膨張弁の弁口を塞ぐために用いられ、弾性部材５０はスピンドル６０に予荷重をかける役割を果たすことができる。 In this embodiment, the annular structure 20 is a bushing, and the valve core assembly having a second position-limiting step on the outer wall of the bushing has one end fitted onto the bushing and an elastic member abutting the second position-limiting step. The elastic member 50 further includes a spindle 60 to which the other end of the elastic member 50 is abutted. The spindle 60 is used to close the valve port of the electronic expansion valve, and the elastic member 50 can serve to preload the spindle 60.

実施例２は、環状構造２０が軸受である弁芯アセンブリが、端部が軸受に当接され、且つ外壁に第３位置制限段差を有する第２押圧スリーブ７０と、一端が第２押圧スリーブ７０上に嵌合され、且つ第３位置制限段差に当接される弾性部材５０と、弾性部材５０の他端が当接されるスピンドル６０と、を更に含む点で上記の実施例と異なる。第２押圧スリーブ７０を設けることで弾性部材５０と軸受とを離間することができ、これにより、軸受を保護する役割を果たし信頼性を高める。具体的には、第２押圧スリーブ７０は軸受の外輪に当接される。 In the second embodiment, the valve core assembly in which the annular structure 20 is a bearing includes a second pressing sleeve 70 whose end is in contact with the bearing and has a third position-limiting step on the outer wall; This embodiment differs from the above embodiment in that it further includes an elastic member 50 that is fitted onto the top and abuts the third position limiting step, and a spindle 60 that the other end of the elastic member 50 abuts. By providing the second pressing sleeve 70, the elastic member 50 and the bearing can be separated from each other, thereby serving to protect the bearing and increasing reliability. Specifically, the second pressing sleeve 70 is brought into contact with the outer ring of the bearing.

選択的には、弁芯アセンブリは弁スリーブ４０を更に含み、スクリュ１０は弁スリーブ４０中に設けられ、軸受は弁スリーブ４０内に位置し、弁スリーブ４０の一端は環状位置制限構造を有し、環状位置制限構造は軸受の外輪と位置制限し合う。スクリュ１０の第２ロッドセグメント１４の端面は軸受の内輪と位置制限し合う。 Optionally, the valve core assembly further includes a valve sleeve 40, the screw 10 is disposed within the valve sleeve 40, the bearing is located within the valve sleeve 40, and one end of the valve sleeve 40 has an annular position limiting structure. , the annular position limiting structure mutually limits the position with the outer ring of the bearing. The end face of the second rod segment 14 of the screw 10 limits the position of the inner ring of the bearing.

本実施例において、第２押圧スリーブ７０のフランジ構造１２に向けた一端はテーパ孔７１を有し、テーパ孔７１はフランジ構造１２を回避するために用いられる。上記の設置によって、フランジ構造１２と第２押圧スリーブ７０とが干渉することを回避することができる。 In this embodiment, one end of the second pressing sleeve 70 facing the flange structure 12 has a tapered hole 71, and the tapered hole 71 is used to avoid the flange structure 12. By the above installation, interference between the flange structure 12 and the second pressing sleeve 70 can be avoided.

本出願の別の実施例は、上記で提供された弁芯アセンブリを含む電子膨張弁を提供している。本実施例の技術態様を適用すると、弁芯アセンブリにはスクリュ１０及び環状構造２０が設けられ、環状構造２０はブッシュ又は軸受であり、スクリュ１０は一体成形構造であり、第１ロッドセグメント１１及び第１ロッドセグメント１１の一端に設けられるフランジ構造を含み、フランジ構造の径方向寸法は第１ロッドセグメント１１の径方向寸法より大きく、第１ロッドセグメント１１は環状構造２０内に設けられ、第１ロッドセグメント１１の周面と環状構造２０の内壁との間に隙間を有し、フランジ構造は環状構造２０の一端と位置制限し合う。スクリュ１０と環状構造２０との間に隙間を有するため、スクリュ１０は環状構造２０に対して可動であり、これにより、使用時に弁芯アセンブリにおける一部の構造が電子膨張弁のナット及び弁口等の構造の同軸度誤差に応じて自動的に適応的な位置調整を行うことができ、これにより、電子膨張弁が引っ掛かりやすいという問題を回避し、更には一部の構造間の摩擦力を低減して開弁性能を向上させることができる。 Another embodiment of the present application provides an electronic expansion valve that includes the valve core assembly provided above. Applying the technical aspects of this embodiment, the valve core assembly is provided with a screw 10 and an annular structure 20, the annular structure 20 is a bush or a bearing, the screw 10 is a one-piece structure, the first rod segment 11 and a flange structure provided at one end of the first rod segment 11, the radial dimension of the flange structure being larger than the radial dimension of the first rod segment 11, the first rod segment 11 provided within the annular structure 20, and the first rod segment 11 A gap is provided between the circumferential surface of the rod segment 11 and the inner wall of the annular structure 20, and the flange structure limits the position of one end of the annular structure 20. Due to the clearance between the screw 10 and the annular structure 20, the screw 10 is movable with respect to the annular structure 20, which allows some structures in the valve core assembly to close together with the nut and valve opening of the electronic expansion valve during use. It can automatically make adaptive position adjustments according to the coaxiality error of other structures, which avoids the problem of electronic expansion valves being easily stuck, and even reduces the frictional force between some structures. It is possible to improve the valve opening performance by reducing the

本出願において、スクリュと押圧スリーブとスクリュとブッシュ（又は軸受）とはいずれも隙間嵌めであり、ブッシュはフランジによってスクリュにロックされ、装着後にフランジの位置を制御することによってスクリュとブッシュとが自由に回転できるようにすることができると同時にブッシュとスクリュとの接続強度を確保しており、ブッシュは押圧スリーブに当接され、隙間によってスクリュの一定の範囲内での移動を実現することができ、フランジの肉厚及びフランジ量を設計することによってスクリュとブッシュとの接続強度を確保し、この態様は、ナットと弁口との同軸度誤差により製品の装着時に引っ掛かりが発生することを回避すると同時にスクリュブッシュアセンブリと押圧スリーブとの摩擦力を低減して、製品の開弁性能の向上に有利である。 In this application, the screw and the pressing sleeve, and the screw and the bush (or bearing) are all loose fits, and the bush is locked to the screw by a flange, and the screw and bush can be moved freely by controlling the position of the flange after installation. At the same time, the bushing and screw are connected to each other to ensure strength. By designing the flange wall thickness and flange amount, the connection strength between the screw and the bushing is ensured, and this aspect prevents the product from getting caught due to coaxiality errors between the nut and the valve opening. At the same time, the frictional force between the screw bush assembly and the pressing sleeve is reduced, which is advantageous in improving the valve opening performance of the product.

上述したものは本出願の好ましい実施例にすぎず、本出願を制限するためのものではなく当業者にとって本出願は様々な変更及び変化が可能である。本出願の精神及び原則の範囲内でなされたいかなる修正、同等の置換、改良等はいずれも本出願の保護範囲内に含まれるべきである。
What has been described above are only preferred embodiments of the present application, and are not intended to limit the present application, but are capable of various modifications and variations to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (9)

一体成形構造であり、第１ロッドセグメント（１１）及び前記第１ロッドセグメント（１１）の一端に設けられるフランジ構造（１２）を含み、前記フランジ構造（１２）の径方向寸法が前記第１ロッドセグメント（１１）の径方向寸法より大きいスクリュ（１０）と、
前記第１ロッドセグメント（１１）が内部に設けられる環状構造（２０）であって、前記第１ロッドセグメント（１１）の周面と前記環状構造（２０）の内壁との間に隙間を有し、前記フランジ構造（１２）は前記環状構造（２０）の一端と位置制限し合い、前記環状構造（２０）がブッシュであり、前記ブッシュの外壁に第２位置制限段差を有する環状構造（２０）と、
一端が前記ブッシュ上に嵌合され、且つ前記第２位置制限段差に当接される弾性部材（５０）と、
前記弾性部材（５０）の他端が当接されるスピンドル（６０）と、
を含む弁芯アセンブリ。 It is an integrally molded structure, and includes a first rod segment (11) and a flange structure (12) provided at one end of the first rod segment (11), and the radial dimension of the flange structure (12) is equal to the first rod segment. a screw (10) larger than the radial dimension of the segment (11);
An annular structure (20) in which the first rod segment (11) is provided, the annular structure having a gap between the circumferential surface of the first rod segment (11) and an inner wall of the annular structure (20). , the flange structure (12) limits the position of one end of the annular structure (20), the annular structure (20) is a bush , and the outer wall of the bush has a second position limit step. structure (20);
an elastic member (50) having one end fitted onto the bush and abutting against the second position limiting step;
a spindle (60) against which the other end of the elastic member (50) is abutted;
Valve core assembly including. 一体成形構造であり、第１ロッドセグメント（１１）及び前記第１ロッドセグメント（１１）の一端に設けられるフランジ構造（１２）を含み、前記フランジ構造（１２）の径方向寸法が前記第１ロッドセグメント（１１）の径方向寸法より大きいスクリュ（１０）と、 It is an integrally molded structure, and includes a first rod segment (11) and a flange structure (12) provided at one end of the first rod segment (11), and the radial dimension of the flange structure (12) is equal to the first rod segment. a screw (10) larger than the radial dimension of the segment (11);
前記第１ロッドセグメント（１１）が内部に設けられる環状構造（２０）であって、前記第１ロッドセグメント（１１）の周面と前記環状構造（２０）の内壁との間に隙間を有し、前記フランジ構造（１２）は前記環状構造（２０）の一端と位置制限し合い、前記環状構造（２０）が軸受である環状構造（２０）と、 An annular structure (20) in which the first rod segment (11) is provided, the annular structure having a gap between the circumferential surface of the first rod segment (11) and an inner wall of the annular structure (20). , an annular structure (20) in which the flange structure (12) limits the position of one end of the annular structure (20), and the annular structure (20) is a bearing;
端部が前記軸受に当接され、且つ外壁に第３位置制限段差を有する第２押圧スリーブ（７０）と、 a second pressing sleeve (70) whose end portion abuts the bearing and has a third position-limiting step on the outer wall;
一端が前記第２押圧スリーブ（７０）上に嵌合され、且つ前記第３位置制限段差に当接される弾性部材（５０）と、 an elastic member (50) having one end fitted onto the second pressing sleeve (70) and abutting against the third position-limiting step;
前記弾性部材（５０）の他端が当接されるスピンドル（６０）と、 a spindle (60) against which the other end of the elastic member (50) is abutted;
を含む弁芯アセンブリ。 Valve core assembly including. 前記フランジ構造（１２）はラッパ口状である、請求項１又は２に記載の弁芯アセンブリ。 A valve core assembly according to claim 1 or 2 , wherein the flange structure (12) is trumpet-shaped. 前記第１ロッドセグメント（１１）は捨て孔（１３）を有し、前記捨て孔（１３）は前記フランジ構造（１２）の孔に連通される、請求項３に記載の弁芯アセンブリ。 Valve core assembly according to claim 3 , wherein said first rod segment (11) has a sacrificial hole (13), said sacrificial hole (13) communicating with a hole in said flange structure (12). 前記フランジ構造（１２）は打抜成形構造である、請求項３に記載の弁芯アセンブリ。 The valve core assembly of claim 3 , wherein the flange structure (12) is a stamped structure. 前記スクリュ（１０）は第２ロッドセグメント（１４）を更に含み、前記第２ロッドセグメント（１４）は前記第１ロッドセグメント（１１）の他端に接続され、前記第２ロッドセグメント（１４）の直径は前記第１ロッドセグメント（１１）の直径より大きく、前記第２ロッドセグメント（１４）の端面は前記環状構造（２０）の他端と位置制限し合い、前記第２ロッドセグメント（１４）の端面と前記フランジ構造（１２）との距離は前記環状構造（２０）の軸方向寸法より大きい、請求項１又は２に記載の弁芯アセンブリ。 The screw (10) further includes a second rod segment (14), the second rod segment (14) is connected to the other end of the first rod segment (11), and the second rod segment (14) is connected to the other end of the first rod segment (11). The diameter is larger than the diameter of the first rod segment (11), and the end surface of the second rod segment (14) limits the position of the other end of the annular structure (20). Valve core assembly according to claim 1 or 2 , wherein the distance between the end face and the flange structure (12) is greater than the axial dimension of the annular structure (20). 前記第２ロッドセグメント（１４）が内部に設けられる第１押圧スリーブ（３０）であって、前記第２ロッドセグメント（１４）の周面と前記第１押圧スリーブ（３０）の内壁との間に隙間を有し、前記第１押圧スリーブ（３０）の端部が前記環状構造（２０）の端部と位置制限し合う第１押圧スリーブ（３０）を更に含む、請求項６に記載の弁芯アセンブリ。 a first pressing sleeve (30) in which the second rod segment (14) is provided, between the peripheral surface of the second rod segment (14) and the inner wall of the first pressing sleeve (30); The valve core according to claim 6 , further comprising a first pressing sleeve (30) having a gap and positionally limiting an end of the first pressing sleeve (30) to an end of the annular structure (20). assembly. 前記第２押圧スリーブ（７０）の前記フランジ構造（１２）に向けた一端にテーパ孔（７１）を有し、前記テーパ孔（７１）は前記フランジ構造（１２）を回避するために用いられる、請求項２に記載の弁芯アセンブリ。 The second pressing sleeve (70) has a tapered hole (71) at one end facing the flange structure (12), and the tapered hole (71) is used to avoid the flange structure (12). The valve core assembly of claim 2 . 請求項１から８のいずれか一項に記載の弁芯アセンブリを含む、電子膨張弁。 An electronic expansion valve comprising a valve core assembly according to any one of claims 1 to 8 .
JP2021577140A 2019-09-24 2020-08-12 Valve core assembly and electronic expansion valve including the same Active JP7348318B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201921599725.1U CN210920163U (en) 2019-09-24 2019-09-24 Valve core assembly and electronic expansion valve with same
CN201921599725.1 2019-09-24
PCT/CN2020/108665 WO2021057299A1 (en) 2019-09-24 2020-08-12 Valve core assembly and electronic expansion valve having same

Publications (2)

Publication Number Publication Date
JP2022545998A JP2022545998A (en) 2022-11-02
JP7348318B2 true JP7348318B2 (en) 2023-09-20

Family

ID=71362105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021577140A Active JP7348318B2 (en) 2019-09-24 2020-08-12 Valve core assembly and electronic expansion valve including the same

Country Status (4)

Country Link
JP (1) JP7348318B2 (en)
KR (1) KR102624443B1 (en)
CN (1) CN210920163U (en)
WO (1) WO2021057299A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN210920163U (en) * 2019-09-24 2020-07-03 浙江盾安禾田金属有限公司 Valve core assembly and electronic expansion valve with same
CN114623240B (en) * 2020-12-11 2023-03-14 浙江盾安人工环境股份有限公司 Valve needle assembly and electronic expansion valve with same
CN216158328U (en) * 2021-09-02 2022-04-01 苏州华越金属有限公司 Valve needle and electronic expansion valve with same
WO2023066116A1 (en) * 2021-10-20 2023-04-27 浙江盾安人工环境股份有限公司 Valve needle component, and flow regulating valve having same
CN116753319A (en) * 2022-01-26 2023-09-15 广东威灵电机制造有限公司 Valve needle assembly, electronic expansion valve and refrigeration equipment
US11867297B2 (en) * 2022-05-17 2024-01-09 Dresser, Llc Clamping a plug tip in a control valve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004312821A (en) 2003-04-03 2004-11-04 Aisan Ind Co Ltd Stepping motor and flow control valve having same
JP2011080583A (en) 2009-10-09 2011-04-21 Zhejang Sanhua Co Ltd Electronic expansion valve
CN104180567A (en) 2013-05-22 2014-12-03 浙江三花股份有限公司 Electronic expansion valve
JP2016156447A (en) 2015-02-24 2016-09-01 株式会社不二工機 Motor-operated valve and its assembling method
CN107289144A (en) 2016-04-11 2017-10-24 浙江盾安人工环境股份有限公司 A kind of electric expansion valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3672380B2 (en) * 1996-06-19 2005-07-20 株式会社鷺宮製作所 Electric control valve
CN108980378A (en) * 2014-06-17 2018-12-11 浙江盾安人工环境股份有限公司 Electric expansion valve
CN208634406U (en) * 2018-08-21 2019-03-22 浙江三花制冷集团有限公司 Electric expansion valve
CN210920163U (en) * 2019-09-24 2020-07-03 浙江盾安禾田金属有限公司 Valve core assembly and electronic expansion valve with same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004312821A (en) 2003-04-03 2004-11-04 Aisan Ind Co Ltd Stepping motor and flow control valve having same
JP2011080583A (en) 2009-10-09 2011-04-21 Zhejang Sanhua Co Ltd Electronic expansion valve
CN104180567A (en) 2013-05-22 2014-12-03 浙江三花股份有限公司 Electronic expansion valve
JP2016156447A (en) 2015-02-24 2016-09-01 株式会社不二工機 Motor-operated valve and its assembling method
CN107289144A (en) 2016-04-11 2017-10-24 浙江盾安人工环境股份有限公司 A kind of electric expansion valve

Also Published As

Publication number Publication date
KR20220028024A (en) 2022-03-08
CN210920163U (en) 2020-07-03
KR102624443B1 (en) 2024-01-15
JP2022545998A (en) 2022-11-02
WO2021057299A1 (en) 2021-04-01

Similar Documents

Publication Publication Date Title
JP7348318B2 (en) Valve core assembly and electronic expansion valve including the same
JP5527505B2 (en) Fastener assembly including screws and restrained bushings
JP7355937B2 (en) electronic expansion valve
JP2018096457A5 (en)
US20180161994A1 (en) Cutting device and scissors
KR20220148262A (en) Nut assembly and electronic expansion valve
JPWO2015129163A1 (en) Ball screw device
US20180147737A1 (en) Cutting device and scissors
JP7472401B2 (en) Valve core assembly and electronic expansion valve having the same
CN112621164B (en) Press fitting method, valve core assembly and electronic expansion valve
JP2008039182A (en) Bearing
JP2023545237A (en) Valve core assembly and electronic expansion valve
JPH078905Y2 (en) Ball joint
CN219388631U (en) Electric valve
JP4929103B2 (en) hinge
KR20200005052A (en) Hinge having controllable asymmetry torque
JP7431993B2 (en) electronic expansion valve
JP7023179B2 (en) Linear actuator with output screw shaft centering mechanism
JP2023528744A (en) electronic expansion valve
KR20150055870A (en) Incision type snap ring
US10128065B2 (en) Rotation transmitting mechanism and lever switch adopting rotation transmitting mechanism
JP2017133687A (en) Mounting structure of torque shaft bush
JP3174559U (en) Packing mounting structure
JP2016044737A (en) Ball joint
JP2008051251A (en) Rolling bearing

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20220218

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20230315

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20230324

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20230512

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20230828

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230907

R150 Certificate of patent or registration of utility model

Ref document number: 7348318

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150