阀芯组件及具有其的电子膨胀阀Spool assembly and electronic expansion valve with the same
技术领域Technical field
本申请涉及阀门技术领域,具体而言,涉及一种阀芯组件及具有其的电子膨胀阀。This application relates to the technical field of valves, and in particular to a valve core assembly and an electronic expansion valve having the same.
背景技术Background technique
在现有的电子膨胀阀的阀芯组件中,衬套或轴承是过盈装配到螺杆上,其中衬套和螺杆再通过激光焊接固定为一体。螺杆和阀针的同轴度受安装位置影响大,而电子膨胀阀在装配后螺母和阀口等结构容易产生同轴度误差,这会导致在使用时阀针与阀口之间发生卡涩,同时摩擦力较大,影响开阀性能。In the valve core assembly of the existing electronic expansion valve, the bushing or the bearing is interference-fitted on the screw rod, and the bushing and the screw rod are fixed as a whole by laser welding. The coaxiality of the screw and valve needle is greatly affected by the installation position, and the structure of the nut and valve port of the electronic expansion valve is prone to coaxiality error after assembly, which will cause jamming between the valve needle and the valve port during use , At the same time, the friction is large, which affects the valve opening performance.
申请内容Application content
本申请提供了一种阀芯组件及具有其的电子膨胀阀,以解决现有技术中的电子膨胀阀在使用时容易卡涩的问题。The present application provides a valve core assembly and an electronic expansion valve having the same, so as to solve the problem that the electronic expansion valve in the prior art is prone to jam during use.
为了解决上述问题,根据本申请的一个方面,本申请提供了一种阀芯组件,包括:螺杆,螺杆为一体成型结构,螺杆包括第一杆段和设置在第一杆段的一端的翻边结构,翻边结构的径向尺寸大于第一杆段的径向尺寸;环形结构,第一杆段穿设在环形结构内,第一杆段的周面与环形结构的内壁之间具有间隙,翻边结构与环形结构的一端限位配合,环形结构为衬套或轴承。In order to solve the above problems, according to one aspect of the present application, the present application provides a valve core assembly, including: a screw, the screw is an integrally formed structure, the screw includes a first rod section and a flange provided at one end of the first rod section Structure, the radial dimension of the flanging structure is greater than the radial dimension of the first rod section; the ring structure, the first rod section penetrates the ring structure, and there is a gap between the peripheral surface of the first rod section and the inner wall of the ring structure, The flanging structure is matched with one end of the ring structure, and the ring structure is a bushing or a bearing.
进一步地,翻边结构为喇叭口状。Further, the flanging structure has a bell mouth shape.
进一步地,第一杆段具有工艺孔,工艺孔与翻边结构的孔连通。Further, the first rod section has a process hole, and the process hole is in communication with the hole of the flanging structure.
进一步地,翻边结构为冲压成型结构。Further, the flanging structure is a stamping and forming structure.
进一步地,螺杆还包括第二杆段,第二杆段与第一杆段的另一端连接,第二杆段的直径大于第一杆段的直径,第二杆段的端面与环形结构的另一端限位配合,第二杆段的端面与翻边结构之间的距离大于环形结构的轴向尺寸。Further, the screw further includes a second rod section, the second rod section is connected to the other end of the first rod section, the diameter of the second rod section is larger than the diameter of the first rod section, and the end surface of the second rod section is connected to the other end of the ring structure. One end is limited and matched, and the distance between the end surface of the second rod section and the flanging structure is greater than the axial dimension of the ring structure.
进一步地,阀芯组件还包括:第一压套,第二杆段穿设在第一压套中,第二杆段的周面与第一压套的内壁之间具有间隙,第一压套的端部与环形结构的端部限位配合。Further, the valve core assembly further includes: a first pressure sleeve, the second rod section penetrates the first pressure sleeve, a gap is provided between the peripheral surface of the second rod section and the inner wall of the first pressure sleeve, and the first pressure sleeve The end of the ring is in position-limiting fit with the end of the ring structure.
进一步地,环形结构为衬套,衬套的外壁上具有第二限位台阶,阀芯组件还包括:弹性件,弹性件的一端套设在衬套上且与第二限位台阶抵接;阀针,弹性件的另一端与阀针抵接。Further, the annular structure is a bushing, the outer wall of the bushing has a second limit step, and the valve core assembly further includes: an elastic member, one end of the elastic member is sleeved on the bush and abuts the second limit step; For the valve needle, the other end of the elastic member abuts against the valve needle.
进一步地,环形结构为轴承,阀芯组件还包括:第二压套,第二压套的端部与轴承抵接,第二压套的外壁上具有第三限位台阶;弹性件,弹性件的一端套设在第二压套上且与第三限位台阶抵接;阀针,弹性件的另一端与阀针抵接。Further, the annular structure is a bearing, and the valve core assembly further includes: a second compression sleeve, the end of the second compression sleeve abuts the bearing, and the outer wall of the second compression sleeve has a third limit step; an elastic member, an elastic member One end of the elastic member is sleeved on the second pressure sleeve and abuts against the third limit step; the valve needle, the other end of the elastic member abuts against the valve needle.
进一步地,第二压套的朝向翻边结构的一端具有锥形孔,锥形孔用于避让翻边结构。Further, one end of the second pressing sleeve facing the flanging structure has a tapered hole, and the tapered hole is used to avoid the flanging structure.
根据本申请的另一方面,提供了一种电子膨胀阀,电子膨胀阀包括上述的阀芯组件。According to another aspect of the present application, an electronic expansion valve is provided. The electronic expansion valve includes the above-mentioned valve core assembly.
应用本申请的技术方案,在阀芯组件中设置有螺杆和环形结构,其中环形结构为衬套或轴承,螺杆为一体成型结构,螺杆包括第一杆段和设置在第一杆段的一端的翻边结构,翻边结构的径向尺寸大于第一杆段的径向尺寸,第一杆段穿设在环形结构内,第一杆段的周面与环形结构的内壁之间具有间隙,翻边结构与环形结构的一端限位配合。由于螺杆与环形结构之间具有间隙,螺杆可相对环形结构活动,这样在使用时阀芯组件中的部分结构可以根据电子膨胀阀的螺母和阀口等结构的同轴度误差自动进行适应性的位置调整,从而避免了电子膨胀阀容易卡涩的问题,而且,可以减小部分结构之间的摩擦力,提高开阀性能。Applying the technical solution of the present application, a screw and a ring structure are provided in the valve core assembly, wherein the ring structure is a bushing or a bearing, the screw is an integrally formed structure, and the screw includes a first rod section and a rod set at one end of the first rod section. Flanging structure, the radial dimension of the flanging structure is greater than the radial dimension of the first rod section, the first rod section penetrates the ring structure, and there is a gap between the peripheral surface of the first rod section and the inner wall of the ring structure, The edge structure is in position-limiting cooperation with one end of the ring structure. Because there is a gap between the screw and the ring structure, the screw can move relative to the ring structure, so that part of the structure in the valve core assembly can be automatically adapted according to the coaxiality error of the electronic expansion valve nut and valve port during use. The position adjustment avoids the problem of easy jamming of the electronic expansion valve, and can reduce the friction between some structures and improve the valve opening performance.
附图说明Description of the drawings
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解,本申请的示意性实施例及其说明用于解释本申请,并不构成对本申请的不当限定。在附图中:The drawings of the specification forming a part of the application are used to provide a further understanding of the application, and the exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:
图1示出了本申请的实施例一提供的阀芯组件的结构示意图;Fig. 1 shows a schematic structural diagram of a valve core assembly provided in Embodiment 1 of the present application;
图2示出了图1的局部放大图;Figure 2 shows a partial enlarged view of Figure 1;
图3示出了图1中的阀芯组件应用于电子膨胀阀的结构示意图;Fig. 3 shows a schematic structural diagram of the valve core assembly in Fig. 1 applied to an electronic expansion valve;
图4示出了本申请的实施例二提供的阀芯组件应用于电子膨胀阀的结构示意图;FIG. 4 shows a schematic structural diagram of the valve core assembly provided in the second embodiment of the present application applied to an electronic expansion valve;
图5示出了图4的局部放大图。Fig. 5 shows a partial enlarged view of Fig. 4.
其中,上述附图包括以下附图标记:Among them, the above drawings include the following reference signs:
10、螺杆;11、第一杆段;12、翻边结构;13、工艺孔;14、第二杆段;20、环形结构;30、第一压套;40、阀套;50、弹性件;60、阀针;70、第二压套;71、锥形孔。10. Screw; 11. First rod section; 12. Flanging structure; 13. Process hole; 14. Second rod section; 20. Ring structure; 30. First pressure sleeve; 40. Valve sleeve; 50. Elastic part ; 60, valve needle; 70, second pressure sleeve; 71, tapered hole.
具体实施方式detailed description
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述。显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实施例。以下对至少一个示例性实施例的描述实际上仅仅是说明性的,决不作为对本申请及其应用或使用的任何限制。基于本申请中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any restriction on the application and its application or use. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of this application.
如附图所示,本申请的实施例一提供了一种阀芯组件,包括:螺杆10,螺杆10为一体成型结构,螺杆10包括第一杆段11和设置在第一杆段11的一端的翻边结构12,翻边结构12的径向尺寸大于第一杆段11的径向尺寸;环形结构20,第一杆段11穿设在环形结构20内, 第一杆段11的周面与环形结构20的内壁之间具有间隙,翻边结构12与环形结构20的一端限位配合,环形结构20为衬套或轴承。As shown in the drawings, the first embodiment of the present application provides a valve core assembly, including: a screw 10, the screw 10 is an integral structure, the screw 10 includes a first rod section 11 and one end of the first rod section 11 The flanging structure 12, the radial size of the flanging structure 12 is greater than the radial size of the first rod section 11; the ring structure 20, the first rod section 11 is inserted in the ring structure 20, the circumferential surface of the first rod section 11 There is a gap with the inner wall of the ring structure 20, the flanged structure 12 is in positional fit with one end of the ring structure 20, and the ring structure 20 is a bushing or a bearing.
应用本申请的技术方案,在阀芯组件中设置有螺杆10和环形结构20,其中环形结构20为衬套或轴承,螺杆10为一体成型结构,螺杆10包括第一杆段11和设置在第一杆段11的一端的翻边结构,翻边结构的径向尺寸大于第一杆段11的径向尺寸,第一杆段11穿设在环形结构20内,第一杆段11的周面与环形结构20的内壁之间具有间隙,翻边结构与环形结构20的一端限位配合。由于螺杆10与环形结构20之间具有间隙,螺杆10可相对环形结构20活动,这样在使用时阀芯组件中的部分结构可以根据电子膨胀阀的螺母和阀口等结构的同轴度误差自动进行适应性的位置调整,从而避免了电子膨胀阀容易卡涩的问题,而且,可以减小部分结构之间的摩擦力,提高开阀性能。Applying the technical solution of the present application, a screw 10 and an annular structure 20 are provided in the valve core assembly, wherein the annular structure 20 is a bushing or a bearing, the screw 10 is an integral structure, and the screw 10 includes a first rod section 11 and a first rod section 11 A flanging structure at one end of a rod section 11, the radial dimension of the flanging structure is greater than the radial dimension of the first rod section 11, the first rod section 11 penetrates the annular structure 20, and the peripheral surface of the first rod section 11 There is a gap with the inner wall of the ring structure 20, and the flanging structure is in position-limiting fit with one end of the ring structure 20. Since there is a gap between the screw 10 and the ring structure 20, the screw 10 can move relative to the ring structure 20, so that part of the structure in the valve core assembly can be automatically adjusted according to the coaxiality error of the electronic expansion valve nut and valve port during use. The adaptive position adjustment avoids the problem of easy jamming of the electronic expansion valve, and can reduce the friction between some structures and improve the valve opening performance.
在本实施例中,翻边结构12为喇叭口状。将翻边结构12设置为喇叭口状,可以便于环形结构20的装配和拆卸,而且便于翻边结构12加工成型。可选地,翻边结构12的侧壁与第一杆段11的轴向之间的夹角为40度至50度。In this embodiment, the flanging structure 12 has a bell mouth shape. Setting the flanging structure 12 in a bell mouth shape can facilitate the assembly and disassembly of the ring structure 20 and facilitate the processing and forming of the flanging structure 12. Optionally, the included angle between the side wall of the flanging structure 12 and the axial direction of the first rod section 11 is 40 degrees to 50 degrees.
在本实施例中,翻边结构12为冲压成型结构。采用冲压成型的方式,可便于翻边结构12加工成型,工艺简单,成本低。In this embodiment, the flanging structure 12 is a stamping and forming structure. The stamping and forming method can facilitate the processing and forming of the flanging structure 12, with simple process and low cost.
进一步地,第一杆段11具有工艺孔13,工艺孔13与翻边结构12的孔连通。通过设置工艺孔13,便于翻边结构12成型。工艺孔13用于避让冲压成型的工具。Further, the first rod section 11 has a process hole 13, and the process hole 13 is in communication with the hole of the flanging structure 12. By providing the process hole 13, the flanging structure 12 is easily formed. The process hole 13 is used to avoid punching and forming tools.
在本实施例中,螺杆10还包括第二杆段14,第二杆段14与第一杆段11的另一端连接,第二杆段14的直径大于第一杆段11的直径,第二杆段14的端面与环形结构20的另一端限位配合,第二杆段14的端面与翻边结构12之间的距离大于环形结构20的轴向尺寸。这样可通过第二杆段14和翻边结构12分别对环形结构20的两端进行限位,而且,由于第二杆段14的端面与翻边结构12之间的距离大于环形结构20的轴向尺寸,可使得环形结构20与螺杆10可以在轴向发生一定的相对位移,以进行位置调整,适应装配误差。In this embodiment, the screw 10 further includes a second rod section 14, the second rod section 14 is connected to the other end of the first rod section 11, the diameter of the second rod section 14 is greater than the diameter of the first rod section 11, and the second rod section 14 is connected to the other end of the first rod section 11. The end surface of the rod section 14 is in positional fit with the other end of the ring structure 20, and the distance between the end surface of the second rod section 14 and the flanging structure 12 is greater than the axial dimension of the ring structure 20. In this way, the two ends of the ring structure 20 can be restricted by the second rod section 14 and the flanging structure 12, and the distance between the end surface of the second rod section 14 and the flanging structure 12 is greater than the axis of the ring structure 20. The axial dimension can make the annular structure 20 and the screw 10 have a certain relative displacement in the axial direction, so as to adjust the position and adapt to the assembly error.
在本实施例中,阀芯组件还包括:第一压套30,第二杆段14穿设在第一压套30中,第二杆段14的周面与第一压套30的内壁之间具有间隙,第一压套30的端部与环形结构20的端部限位配合。第一压套30可对环形结构20起到限位作用。可选地,第一压套30的外壁上具有第一限位台阶,阀芯组件还包括:阀套40,第一压套30的一部分穿设在阀套40中,且第一限位台阶与阀套40的端面抵接以进行定位和限位。在本实施例中,环形结构20为衬套。In this embodiment, the valve core assembly further includes: a first pressure sleeve 30, the second rod section 14 is inserted through the first pressure sleeve 30, and the peripheral surface of the second rod section 14 is different from the inner wall of the first pressure sleeve 30. There is a gap therebetween, and the end of the first compression sleeve 30 and the end of the ring structure 20 are in position-limiting fit. The first compression sleeve 30 can limit the ring structure 20. Optionally, the outer wall of the first compression sleeve 30 has a first limit step, the valve core assembly further includes: a valve sleeve 40, a part of the first compression sleeve 30 penetrates the valve sleeve 40, and the first limit step It abuts against the end surface of the valve sleeve 40 for positioning and limiting. In this embodiment, the ring structure 20 is a bushing.
在本实施例中,环形结构20为衬套,衬套的外壁上具有第二限位台阶,阀芯组件还包括:弹性件50,弹性件50的一端套设在衬套上且与第二限位台阶抵接;阀针60,弹性件50的另一端与阀针60抵接。阀针60用于封堵电子膨胀阀的阀口,弹性件50可起到给阀针60预紧的作用。In this embodiment, the annular structure 20 is a bushing, and the outer wall of the bushing has a second limit step. The valve core assembly further includes an elastic member 50. One end of the elastic member 50 is sleeved on the bushing and is connected to the second The limit step abuts; the valve needle 60, the other end of the elastic member 50 abuts the valve needle 60. The valve needle 60 is used to block the valve port of the electronic expansion valve, and the elastic member 50 can play a role of pre-tensioning the valve needle 60.
在实施例二中,与上述实施例不同的是,环形结构20为轴承,阀芯组件还包括:第二压套70,第二压套70的端部与轴承抵接,第二压套70的外壁上具有第三限位台阶;弹性件50, 弹性件50的一端套设在第二压套70上且与第三限位台阶抵接;阀针60,弹性件50的另一端与阀针60抵接。通过设置第二压套70,可将弹性件50与轴承间隔开,从而对轴承起到防护作用,提高可靠性。具体地,第二压套70与轴承的外圈抵接。In the second embodiment, the difference from the above-mentioned embodiment is that the annular structure 20 is a bearing, and the valve core assembly further includes: a second pressure sleeve 70, the end of the second pressure sleeve 70 abuts against the bearing, and the second pressure sleeve 70 There is a third limit step on the outer wall; the elastic member 50, one end of the elastic member 50 is sleeved on the second compression sleeve 70 and abuts the third limit step; the valve needle 60, the other end of the elastic member 50 and the valve The needle 60 abuts. By providing the second compression sleeve 70, the elastic member 50 can be spaced from the bearing, thereby protecting the bearing and improving reliability. Specifically, the second pressure sleeve 70 abuts against the outer ring of the bearing.
可选地,阀芯组件还包括阀套40,螺杆10穿设在阀套40中,轴承位于阀套40内,阀套40的一端具有环形限位结构,环形限位结构与轴承的外圈限位配合。螺杆10的第二杆段14的端面与轴承的内圈限位配合。Optionally, the valve core assembly further includes a valve sleeve 40, the screw 10 is inserted in the valve sleeve 40, the bearing is located in the valve sleeve 40, and one end of the valve sleeve 40 has an annular limiting structure, and the annular limiting structure is connected to the outer ring of the bearing. Limit coordination. The end surface of the second rod section 14 of the screw 10 is in a limit fit with the inner ring of the bearing.
在本实施例中,第二压套70的朝向翻边结构12的一端具有锥形孔71,锥形孔71用于避让翻边结构12。通过上述设置,可避免翻边结构12与第二压套70发生干涉。In this embodiment, the end of the second pressing sleeve 70 facing the flanging structure 12 has a tapered hole 71, and the tapered hole 71 is used to avoid the flanging structure 12. Through the above arrangement, interference between the flanging structure 12 and the second pressing sleeve 70 can be avoided.
本申请的另一实施例提供了一种电子膨胀阀,电子膨胀阀包括上述提供的阀芯组件。应用本实施例的技术方案,在阀芯组件中设置有螺杆10和环形结构20,其中环形结构20为衬套或轴承,螺杆10为一体成型结构,螺杆10包括第一杆段11和设置在第一杆段11的一端的翻边结构,翻边结构的径向尺寸大于第一杆段11的径向尺寸,第一杆段11穿设在环形结构20内,第一杆段11的周面与环形结构20的内壁之间具有间隙,翻边结构与环形结构20的一端限位配合。由于螺杆10与环形结构20之间具有间隙,螺杆10可相对环形结构20活动,这样在使用时阀芯组件中的部分结构可以根据电子膨胀阀的螺母和阀口等结构的同轴度误差自动进行适应性的位置调整,从而避免了电子膨胀阀容易卡涩的问题,而且,可以减小部分结构之间的摩擦力,提高开阀性能。Another embodiment of the present application provides an electronic expansion valve, which includes the valve core assembly provided above. Applying the technical solution of this embodiment, a screw 10 and an annular structure 20 are provided in the valve core assembly, wherein the annular structure 20 is a bushing or a bearing, the screw 10 is an integrally formed structure, and the screw 10 includes a first rod section 11 and an The flanging structure at one end of the first rod section 11 has a radial dimension greater than that of the first rod section 11. The first rod section 11 penetrates the annular structure 20, and the circumference of the first rod section 11 There is a gap between the surface and the inner wall of the ring structure 20, and the flanging structure is in position-limiting fit with one end of the ring structure 20. Since there is a gap between the screw 10 and the ring structure 20, the screw 10 can move relative to the ring structure 20, so that part of the structure in the valve core assembly can be automatically adjusted according to the coaxiality error of the electronic expansion valve nut and valve port during use. The adaptive position adjustment avoids the problem of easy jamming of the electronic expansion valve, and can reduce the friction between some structures and improve the valve opening performance.
在本申请中,螺杆与压套之间、螺杆与衬套(或轴承)之间均为间隙配合,衬套通过翻边锁在螺杆内,装配后通过控制翻边位置,既可使得螺杆和衬套之间可以自由转动,同时确保了衬套与螺杆的连接强度;衬套抵在压套上,通过间隙可实现螺杆在一定范围内活动;通过翻边壁厚和翻边量的设计,保证螺杆和衬套的连接强度;该方案避免了因螺母和阀口之间的同轴度误差导致产品装配时发生卡涩;同时减小了螺杆衬套组件与压套之间的摩擦力,有利于产品的开阀性能的提升。In this application, there is a clearance fit between the screw and the compression sleeve, and between the screw and the bushing (or bearing). The bushing is locked in the screw by flanging. After assembly, the flanging position can be controlled to make the screw and The bushings can be rotated freely, while ensuring the connection strength between the bushing and the screw; the bushing is on the pressure sleeve, and the screw can be moved within a certain range through the gap; through the design of the flanging wall thickness and the flanging amount, Ensure the connection strength between the screw and the bushing; this solution avoids jamming during product assembly due to the coaxiality error between the nut and the valve port; at the same time, it reduces the friction between the screw bushing assembly and the pressure sleeve, Conducive to the improvement of the valve opening performance of the product.
以上所述仅为本申请的优选实施例而已,并不用于限制本申请,对于本领域的技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.