CN114076207A

CN114076207A - Electronic expansion valve

Info

Publication number: CN114076207A
Application number: CN202010820482.0A
Authority: CN
Inventors: 曾庆军; 王鑫楠; 邸志强
Original assignee: Dunan Environment Technology Co Ltd
Current assignee: Dunan Environment Technology Co Ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2022-02-22

Abstract

The invention provides an electronic expansion valve, comprising: the valve comprises a valve body, wherein a connecting pipe is arranged at the bottom of the valve body and comprises a transverse pipe section, the transverse pipe section extends out of the side wall of the valve body, and the extending direction of the transverse pipe section is vertical to the axial direction of the valve body; the protective housing, protective housing include casing, lid and be located the joint portion of casing bottom, and the casing is inside to have the installation cavity, and the lid is established at the top of installation cavity, and the valve body is installed in the installation cavity, and the top of valve body supports on the inner wall of lid, joint portion and casing integrated into one piece, and joint portion is used for the horizontal pipeline section of joint. The electronic expansion valve is characterized in that the bottom of the valve body is clamped by the clamping part integrally formed on the shell, and the top of the valve body can be propped against the bottom of the cover body, so that the bearing of the protective shell and other equipment on the protective shell, such as a coil and the like, is realized through the matching of the valve body and the cover body, the bearing of the clamping part is not needed, the axial positioning and the circumferential positioning between the valve body and the coil are realized, and the production efficiency can be effectively improved and the production cost can be reduced by integrally injection-molding the shell and the clamping part.

Description

Electronic expansion valve

Technical Field

The invention relates to the technical field of electronic expansion valve equipment, in particular to an electronic expansion valve.

Background

With the development of science and technology, devices such as transformers and inductors are widely applied in the current society. In the devices such as the transformer and the inductor, the electronic expansion valve plays an important role, in order to facilitate the connection between the valve body and the coil, a fixing plate protruding outwards is usually arranged on the housing of the coil, the positioning sheet is fixed on the housing of the coil through the fixing plate, and finally the axial positioning and the circumferential positioning of the valve body and the coil are realized through the positioning sheet. The structure for connecting the valve body and the coil in the mode is complex, the fixing plate and the positioning sheet and the shell of the positioning sheet and the coil need to be connected in a riveting or welding mode, the production process is complex, and therefore the production efficiency of the electronic expansion valve in the production process is low, and the production cost is increased.

Disclosure of Invention

The invention mainly aims to provide an electronic expansion valve, which aims to solve the problems of high processing cost and low production efficiency caused by positioning and fixing by using a positioning sheet in the prior art.

In order to achieve the above object, the present invention provides an electronic expansion valve comprising: the valve comprises a valve body, wherein a connecting pipe is arranged at the bottom of the valve body and comprises a transverse pipe section, the transverse pipe section extends out of the side wall of the valve body, and the extending direction of the transverse pipe section is vertical to the axial direction of the valve body; the protective housing, protective housing include casing, lid and be located the joint portion of casing bottom, and the casing is inside to have the installation cavity, and the lid is established at the top of installation cavity, and the valve body is installed in the installation cavity, and the top of valve body supports on the inner wall of lid, joint portion and casing integrated into one piece, and joint portion is used for the horizontal pipeline section of joint.

Further, joint portion includes the fixture block, and fixture block inside is provided with the centre gripping chamber and steps down the chamber, and horizontal pipe section wears to establish in the centre gripping chamber, steps down the one end that the chamber is located the centre gripping chamber and is close to the casing to communicate with the centre gripping chamber.

Further, the clamping cavity forms an opening on the end face of one end of the fixture block, which is far away from the shell.

Furthermore, the side walls of the two sides of the clamping cavity are provided with concave arc surfaces, and the concave arc surfaces are matched with the side walls of the connecting pipes.

Further, be provided with a plurality of sand grip structures on the concave cambered surface, the sand grip structure is parallel with the takeover, and a plurality of sand grip structures set up along the circumference interval in centre gripping chamber.

Further, the valve body comprises a valve body and a valve seat located at the bottom of the valve body, the connecting pipe is connected with the valve seat, at least one annular groove is formed in the circumferential direction of the valve seat, and the electronic expansion valve further comprises at least one sealing ring which is sleeved in the annular groove.

Further, the valve body is welded with the valve seat to form a welding seam, and the sealing ring is located below the welding seam.

Further, the opening is gradually reduced from bottom to top.

Further, the cover body and the shell are integrally injection-molded.

Further, the bottom lateral wall of installation cavity is provided with a plurality of bosss, and a plurality of bosss set up along the circumference interval of installation cavity, and the terminal surface that is close to casing bottom one end of a plurality of bosss forms the locating surface jointly, forms between the bottom of locating surface and installation cavity and holds the chamber, and the sealing washer is installed in holding the chamber to the butt is on the locating surface.

By applying the technical scheme, the electronic expansion valve is used for clamping the bottom of the valve body through the clamping part integrally formed on the shell, and meanwhile, the top of the valve body can be propped against the bottom of the cover body, so that the bearing of the protective shell and other equipment on the protective shell, such as a coil and the like, is realized through the matching of the valve body and the cover body, the bearing is not required by the clamping part, the axial positioning and the circumferential positioning between the valve body and the coil are realized, and the production efficiency can be effectively improved and the production cost can be reduced through the integral injection molding of the shell and the clamping part.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 schematically illustrates a block diagram of an embodiment of an electronic expansion valve of the present invention;

fig. 2 schematically shows a cross-sectional view of an embodiment of an electronic expansion valve of the invention;

FIG. 3 is a block diagram schematically illustrating another angle of an embodiment of an electronic expansion valve of the present invention;

FIG. 4 schematically illustrates a block diagram of an embodiment of a valve body of the present invention;

FIG. 5 schematically illustrates a block diagram of an embodiment of a valve seat of the present invention.

Wherein the figures include the following reference numerals:

10. a valve body; 111. a valve body; 112. a valve seat; 12. taking over a pipe; 20. a protective shell; 21. a housing; 22. a clamping part; 221. a yielding cavity; 222. a clamping cavity; 223. a concave arc surface; 23. a cover body; 30. an annular groove; 40. a seal ring; 50. and (4) a boss.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As noted in the background, with the development of technology, devices such as transformers and inductors are used in more general ways in today's society. In the devices such as the transformer and the inductor, the electronic expansion valve plays an important role, in order to facilitate the connection between the valve body and the coil, a fixing plate protruding outwards is usually arranged on the housing of the coil, the positioning sheet is fixed on the housing of the coil through the fixing plate, and finally the axial positioning and the circumferential positioning of the valve body and the coil are realized through the positioning sheet. The structure for connecting the valve body and the coil in the mode is complex, the fixing plate and the positioning sheet and the shell of the positioning sheet and the coil need to be connected in a riveting or welding mode, the production process is complex, and therefore the production efficiency of the electronic expansion valve in the production process is low, and the production cost is increased.

In order to solve the above problems, referring to fig. 1 to 5, an embodiment of the present invention provides an electronic expansion valve, including a valve body 10 and a protective casing 20, wherein a connection pipe 12 is disposed at the bottom of the valve body 10, the connection pipe 12 includes a transverse pipe section, the transverse pipe section extends from a side wall of the valve body 10, and an extending direction of the transverse pipe section is perpendicular to an axial direction of the valve body 10; protective housing 20 includes casing 21, lid 23 and is located the joint portion 22 of casing 21 bottom, and casing 21 is inside to have the installation cavity, and lid 23 lid is established at the top of installation cavity, and valve body 10 is installed in the installation cavity, and the top of valve body 10 supports on the inner wall of lid 23, joint portion 22 and casing 21 integrated into one piece, and joint portion 22 is used for the horizontal pipeline section of joint. The electronic expansion valve of the invention clamps the connecting pipe 12 at the bottom of the valve body 10 through the clamping part 22 integrally formed on the shell 21, and meanwhile, the top of the valve body can be propped against the bottom of the cover body, so that the bearing of the protective shell and other equipment on the protective shell, such as a coil and the like, is realized through the matching of the valve body and the cover body, the bearing is not required to be carried out by the clamping part, the axial positioning and the circumferential positioning between the valve body 10 and the coil are realized, and the valve body 10 is fixedly connected with the protective shell and the coil. The vertical installation when the product uses receives the effect of downward gravity, and coil and protective housing are withstood by the valve body and can not drop. If the protective shell and the coil are lifted upwards, the clamping of the clamping part 22 on the pipe 12 needs to be overcome, and the clamping force does not need to be too large, so long as the protective shell and the coil cannot fall off.

Specifically, the connecting pipe 12 further includes a vertical pipe section connected to the end of the horizontal pipe section, the axis of the vertical pipe section is parallel to the axis of the valve body, and the housing 21 and the clamping portion 22 of the present embodiment are integrally injection-molded.

In order to realize the clamping function of the clamping portion 22, the clamping portion 22 in this embodiment includes a clamping block, a clamping cavity 222 and an abdicating cavity 221 are disposed inside the clamping block, the horizontal segment is inserted into the clamping cavity 222, and the abdicating cavity 221 is located at one end of the clamping cavity 222 close to the casing 21 and is communicated with the clamping cavity 222. Hold and the centre gripping horizontal pipe section through centre gripping chamber 222, realize the fixed of butt joint pipe 12, in order to improve the elasticity of fixture block, the fixture block of this embodiment inside still has the chamber of stepping down 221, makes the clamping part of the centre gripping chamber 222 both sides of fixture block have bigger deformation space through setting up the chamber of stepping down 221, elasticity is sufficient, the reliability is high, the life-span is longer.

In order to facilitate clamping of the joint pipe 12, the clamping cavity 222 in this embodiment forms an opening on the end surface of the end of the clamping block away from the housing 21, and the elastic deformation space of the clamping cavity 222 can be further increased by setting the opening, so as to facilitate clamping of the joint pipe 12.

Wherein, because the connecting pipe 12 is cylindrical, in order to prevent the connecting pipe 12 from sliding off from the clamping cavity 222, the side walls of the two sides of the clamping cavity 222 in this embodiment are provided with concave arc surfaces 223, the concave arc surfaces 223 are matched with the side walls of the connecting pipe 12, and the axes of the two concave arc surfaces 223 are overlapped with the axis of the connecting pipe 12, so as to position and fix the connecting pipe 12 through the two concave arc surfaces 223.

In order to further prevent the adapter tube 12 from slipping off the clamping chamber 222, the concave arc surface 223 in this embodiment is provided with a plurality of convex structures, the convex structures are parallel to the adapter tube 12, and the convex structures are arranged at intervals along the circumferential direction of the clamping chamber 222. Through the arrangement of the plurality of bosses 50, the friction force between the concave arc surface 223 and the outer wall of the adapter tube 12 is increased, so that the adapter tube 12 is effectively prevented from sliding off.

In order to prevent external impurities, water and the like from entering the protective casing 20 and corroding the valve body 10 and the coil, the valve body 10 in this embodiment includes a valve body 111 and a valve seat 112 located at the bottom of the valve body 111, the connection pipe 12 is connected with the valve seat 112, at least one annular groove 30 is arranged in the circumferential direction of the valve seat 112, the electronic expansion valve further includes at least one sealing ring 40, and the sealing ring 40 is sleeved in the annular groove 30.

Specifically, valve shaft 111 and valve seat 112 welded connection in this embodiment to form the welding seam, sealing washer 40 is located the welding seam below, guarantees through valve shaft 111 and the welding of valve seat 112 that the inside of valve body 10 does not get into impurity, and simultaneously, sealing washer 40 is located the welding seam below, and the sealed effect of make full use of sealing washer 40 is to effectively sealing between valve shaft 111 and the valve seat 112, and between valve body 10 and the protective housing 20.

Fix a position the top of valve body 10 through lid 23, and not fix a position through joint portion 22, prevent that joint portion 22 is impaired, guarantee the support to the protective housing, and the staff's installation location of being convenient for, can be connected for dismantling between lid 23 and the casing 21, if adopt can dismantle the connection, then need increase sealing washer 40, preferably, lid 23 in this embodiment and the integrative injection moulding of casing 21 guarantee sealing performance.

In order to facilitate clamping of the butt joint pipe, the opening in the embodiment is gradually reduced from bottom to top, guide inclined planes are formed on two sides of the opening, and during installation, the transverse pipe section enters from the opening and is finally clamped in the concave arc surface.

The bottom lateral wall of the installation cavity in this embodiment is provided with a plurality of bosss 50, and a plurality of bosss 50 set up along the circumference interval of installation cavity, and the terminal surface that is close to casing 21 bottom one end of a plurality of bosss 50 forms the locating surface jointly, forms between the bottom of locating surface and installation cavity and holds the chamber, and sealing washer 40 installs in holding the chamber to the butt is on the locating surface. Through setting up a plurality of bosss 50, can fix a position O type circle on the one hand, on the other hand can satisfy injection moulding process's needs. Preferably, the junction of the mounting cavity and the bottom of the housing 21 is provided with a chamfer to facilitate mounting of the valve body 10 and the sealing ring 40.

The electronic expansion valve is convenient to assemble, and can effectively improve the production efficiency and reduce the production cost. Set up protective housing 20 on the shell of coil, can prevent that the original metal casing of coil from rustting and corroding, can effectively improve the life of expansion valve, the effect of noise suppression can also be played to the plastics shell simultaneously, can effectively reduce the noise of electronic expansion valve during operation.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the electronic expansion valve is characterized in that the bottom of the valve body is clamped by the clamping part integrally formed on the shell, and the top of the valve body can be propped against the bottom of the cover body, so that the bearing of the protective shell and other equipment on the protective shell, such as a coil and the like, is realized through the matching of the valve body and the cover body, the bearing of the clamping part is not needed, the axial positioning and the circumferential positioning between the valve body and the coil are realized, and the production efficiency can be effectively improved and the production cost can be reduced by integrally injection-molding the shell and the clamping part.

It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the foregoing detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like numerals typically identify like components, unless context dictates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, separated, and designed in a wide variety of different configurations, all of which are explicitly contemplated herein.

The present disclosure in accordance with certain embodiments described herein is not to be limited in scope by the specific aspects illustrated. As will be apparent to those skilled in the art, many modifications and variations are possible without departing from the spirit and scope of the disclosure. Functionally equivalent methods and apparatuses, in addition to those enumerated herein, will be apparent to those skilled in the art from the foregoing description, within the scope of the present disclosure. Such modifications and variations are intended to fall within the scope of the appended claims. The disclosure is to be limited only by the terms of the appended claims, along with the full scope of equivalents to which such claims are entitled. It is to be understood that this disclosure is not limited to particular methods, reagents, compounds, compositions or biological systems, which can, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electronic expansion valve, comprising:

the valve body (10), a connecting pipe (12) is arranged at the bottom of the valve body (10), the connecting pipe (12) comprises a transverse pipe section, the transverse pipe section extends out of the side wall of the valve body (10), and the extending direction of the transverse pipe section is perpendicular to the axial direction of the valve body (10);

protective housing (20), protective housing (20) include casing (21), lid (23) and are located joint portion (22) of casing (21) bottom, casing (21) inside has the installation cavity, lid (23) lid is established the top of installation cavity, install valve body (10) in the installation cavity, the top of valve body (10) is supported on the inner wall of lid (23), joint portion (22) with casing (21) integrated into one piece, joint portion (22) are used for the joint horizontal pipeline section.

2. The electronic expansion valve according to claim 1, wherein the clamping portion (22) comprises a clamping block, a clamping cavity (222) and a yielding cavity (221) are disposed inside the clamping block, the horizontal pipe is inserted into the clamping cavity (222), and the yielding cavity (221) is located at one end of the clamping cavity (222) close to the housing (21) and is communicated with the clamping cavity (222).

3. The electronic expansion valve according to claim 2, wherein the clamping chamber (222) forms an opening on an end surface of the cartridge at an end remote from the housing (21).

4. An electronic expansion valve according to claim 2, wherein the side walls on both sides of the clamping chamber (222) are provided with concave curved surfaces (223), and the concave curved surfaces (223) are adapted to the side walls of the nipple (12).

5. An electronic expansion valve according to claim 4, wherein the concave arc surface (223) is provided with a plurality of rib structures, the rib structures are parallel to the nipple (12), and the plurality of rib structures are arranged at intervals along the circumferential direction of the clamping cavity (222).

6. An electronic expansion valve according to claim 1, wherein the valve body (10) comprises a valve body (111) and a valve seat (112) located at the bottom of the valve body (111), the connecting tube (12) is connected to the valve seat (112), at least one annular groove (30) is arranged in the circumferential direction of the valve seat, the electronic expansion valve further comprises at least one sealing ring (40), and the sealing ring (40) is sleeved in the annular groove (30).

7. An electronic expansion valve according to claim 6, wherein the valve body (111) is in welded connection with the valve seat and forms a weld, the sealing ring (40) being located below the weld.

8. An electronic expansion valve according to claim 3, wherein the opening is tapered from bottom to top.

9. An electronic expansion valve according to claim 1, wherein the cover (23) is injection moulded in one piece with the housing (21).

10. The electronic expansion valve according to claim 7, wherein the bottom side wall of the mounting cavity is provided with a plurality of bosses (50), the plurality of bosses (50) are arranged at intervals along the circumferential direction of the mounting cavity, end faces of the plurality of bosses (50) close to one end of the bottom of the housing (21) jointly form a positioning surface, an accommodating cavity is formed between the positioning surface and the bottom end of the mounting cavity, and the sealing ring (40) is mounted in the accommodating cavity and abuts against the positioning surface.