CN114484049A - Electronic expansion valve and refrigeration equipment - Google Patents
Electronic expansion valve and refrigeration equipment Download PDFInfo
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- CN114484049A CN114484049A CN202210393114.1A CN202210393114A CN114484049A CN 114484049 A CN114484049 A CN 114484049A CN 202210393114 A CN202210393114 A CN 202210393114A CN 114484049 A CN114484049 A CN 114484049A
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- valve body
- coil
- body assembly
- screwing
- electronic expansion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an electronic expansion valve and refrigeration equipment, and relates to the field of valves, wherein the electronic expansion valve comprises a valve body assembly, a coil and a screwing assembly, the coil is sleeved on the periphery of the valve body assembly, the screwing assembly is provided with a first screwing piece and a second screwing piece, the first screwing piece is arranged on the coil, the second screwing piece is arranged on the valve body assembly, the first screwing piece and the second screwing piece are in a connected state and a separated state, the first screwing piece and the second screwing piece can be switched between the connected state and the separated state in a rotating mode, the coil and the valve body assembly are connected together in the connected state, and the coil and the valve body assembly are separated in the separated state. The electronic expansion valve provided by the invention has the advantages of low fixing cost, simple and convenient assembly and disassembly of the coil and the valve body assembly, and capability of realizing multi-angle installation of the coil and the valve body assembly.
Description
Technical Field
The invention relates to the field of valves, in particular to an electronic expansion valve and refrigeration equipment.
Background
In the related art, the coil and the valve body of the electronic expansion valve are basically fixed in a welding mode, the fixing cost is high, the electronic expansion valve is inconvenient to install and disassemble, and the multi-angle installation of the coil and the valve body assembly cannot be realized.
Disclosure of Invention
The invention mainly aims to provide an electronic expansion valve and refrigeration equipment, and aims to solve the problems that in the prior art, the fixed connection mode between a coil and a valve body of the electronic expansion valve is high in cost and inconvenient to install and disassemble.
In order to achieve the above object, the present invention provides an electronic expansion valve comprising:
a valve body assembly;
the coil is sleeved on the periphery of the valve body assembly;
close the subassembly soon, be provided with first spiral piece and second spiral piece, first spiral piece is located the coil, the second spiral piece is located valve body component, first spiral piece and second spiral piece have connected state and detached state, first spiral piece and second spiral piece are in rotatable switching between connected state and the detached state is in during the connected state, will the coil with valve body component links together, is in during the detached state, in order to incite somebody to action the coil with the separation of valve body component.
Optionally, the first rotating element is connected to one end of the coil, and the first rotating element has an opening through which the second rotating element passes;
the second screwing piece penetrates through the first screwing piece from the opening, and rotates to a preset angle for limiting the coil to be separated from the valve body assembly along the axial direction of the valve body assembly, so that the first screwing piece and the second screwing piece are in the connection state.
Optionally, the second closes the piece soon and is provided with interconnect's canned paragraph and spacing section, the canned paragraph with valve body subassembly fixed connection, spacing section is followed the radial direction of valve body subassembly extends the setting, spacing section with have between the valve body subassembly along the axial difference in height of valve body subassembly, spacing section is followed the opening is worn to establish first closes the piece soon.
Optionally, a first protruding portion is convexly arranged on one side, facing the valve body assembly, of the fixing section or the fixing section is recessed towards the valve body assembly to form the first protruding portion, and the first protruding portion is fixedly connected with the valve body assembly through resistance welding.
Optionally, the second screwing piece further has a bending section, and the bending section connects the limiting section and the fixing section, so that the limiting section and the fixing section have a height difference along the axial direction of the valve body assembly.
Optionally, the valve body assembly has a mounting end extending out of the coil, the first screwing element is in a cap shape and has a cap body, and the cap body is sleeved on one end of the valve body assembly penetrating through the coil and connected with the coil;
the coil has an insulating housing.
Optionally, one end of the cap body connected with the coil protrudes outwards along the radial direction of the coil to form a brim, and the diameter of the brim is larger than the inner diameter of the coil and smaller than the outer diameter of the coil.
Optionally, the coil is provided with a stator assembly, the stator assembly has a metal shell, the cap peak is arranged at an end of the metal shell, and the first screwing piece and the metal shell are covered by an insulating material to form the insulating shell.
Optionally, the cap body is made of a non-metal material, and the cap body and the insulating shell are integrally formed in an injection molding mode.
Optionally, the cap body and the brim are integrally formed, the cap body and the brim are made of metal, and the second screwing piece is made of metal.
Optionally, the cap body is provided with a bottom plate, the periphery of the bottom plate extends along the axial direction of the coil to form a ring to be arranged on the side wall of the valve body assembly, one end, far away from the bottom plate, of the side wall is connected with the coil, and the opening is formed in the bottom plate.
Optionally, the opening penetrates through the bottom plate, and when the first screwing piece is in the connection state, the limiting section and the opening are arranged in a staggered mode, so that the bottom plate is limited between the limiting section and the valve body assembly.
Optionally, the spacing section orientation one side of valve body subassembly is provided with first cooperation portion, the bottom plate orientation one side of spacing section is provided with second cooperation portion, second cooperation portion with first cooperation portion snap-fit connection, first closure with the second closure is in the separation state is rotatory to being in during the connection state, first cooperation portion card is gone into the second cooperation portion.
Optionally, the first mating portion is a convex hull, and the second mating portion is a groove in snap fit with the convex hull.
Optionally, the second matching portion is multiple, and the multiple second matching portions are arranged along the circumferential direction of the opening.
The invention also provides refrigeration equipment comprising the electronic expansion valve.
According to the technical scheme, the coil is sleeved on the valve body assembly, the first rotating piece is fixedly arranged on the coil, the second rotating piece is fixedly arranged on the valve body assembly, the first rotating piece and the second rotating piece are in rotating switching between a connecting state and a separating state through relative rotation between the first rotating piece and the second rotating piece, the rotating switching between the connecting state and the separating state of the coil and the valve body assembly is indirectly realized, the coil and the valve body assembly are in detachable connection, the assembly and the disassembly of the coil are simple, and the multi-angle installation of the coil can be realized through the rotation of the first rotating piece and the second rotating piece.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an electronic expansion valve according to an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of an assembly structure of a valve body assembly and a second rotating member in an embodiment of the electronic expansion valve of the present invention;
FIG. 4 is a schematic structural view of the second engaging member shown in FIG. 3;
FIG. 5 is a cross-sectional view of FIG. 4;
FIG. 6 is a schematic structural diagram of a first rotating member of an electronic expansion valve according to an embodiment of the present invention;
fig. 7 is a sectional view of an electronic expansion valve according to another embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Valve |
20 | |
| 30 | |
31 | First rotating |
| 32 | Second rotating |
311a | Opening of the |
| 11 | Valve |
12 | |
| 321 | Fixed |
322 | |
| 321a | |
323 | |
| 322a | Reinforcing |
311 | |
| 312 | |
313 | Brim of |
| 21 | Stator assembly | 22 | |
| 23 | |
311b | Second fitting |
| 322b | First fitting part | 31a | Cap body |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The electronic expansion valve aims at the problems that in the prior art, the cost of a fixed connection mode between a coil and a valve body of the electronic expansion valve is high, and the electronic expansion valve is inconvenient to install and disassemble.
The invention provides an electronic expansion valve.
In an embodiment, as shown in fig. 1, fig. 2 and fig. 3, the electronic expansion valve includes a valve body assembly 10, a coil 20 and a screwing assembly 30, the coil 20 is sleeved on the periphery of the valve body assembly 10, the screwing assembly 30 includes a first screwing element 31 and a second screwing element 32, the first screwing element 31 is disposed on the coil 20, the second screwing element 32 is disposed on the valve body assembly 10, the first screwing element 31 and the second screwing element 32 have a connection state and a separation state, the first screwing element 31 and the second screwing element 32 are rotatably switched between the connection state and the separation state, when in the connection state, the coil 20 is connected with the valve body assembly 10, and when in the separation state, the coil 20 is separated from the valve body assembly 10.
Optionally, the electronic expansion valve includes a valve body assembly 10, a coil 20 and a screwing assembly 30, the valve body assembly 10 may be in a long bar shape and has a valve housing 11, the coil 20 is in a hollow cylindrical shape and is sleeved on the outer periphery of the valve housing 11, and the valve housing 11 may be completely wrapped by the coil 20 or partially wrapped by the coil 20, which is not limited herein. The first rotating element 31 is fixedly mounted on the coil 20, the second rotating element 32 can be fixedly mounted on the valve housing 11, and the first rotating element 31 and the second rotating element 32 can rotate relatively to realize switching between a separated state and a connected state. For example, when the first rotating element 31 and the second rotating element 32 are in a separated state, there is no clamping fixation between the first rotating element 31 and the second rotating element 32, and the coil 20 can be taken out along the axial direction of the valve body assembly 10 (e.g., the direction a in fig. 1) to achieve the assembly and disassembly of the coil 20 and the valve body assembly 10. When the first screwing element 31 and the second screwing element 32 are in a connected state, as shown in fig. 2, at this time, because the first screwing element 31 is fixedly installed on the coil 20, and the second screwing element 32 is fixedly installed on the valve body assembly 10, the coil 20 can be indirectly prevented from being separated from the valve body assembly 10 along the axial direction of the valve body assembly 10, so that the coil 20 is stably and fixedly installed on the valve body assembly 10, and the installation of the coil 20 and the valve body assembly 10 is realized. According to the technical scheme, the coil 20 is sleeved on the valve body assembly 10, the first screwing piece 31 is fixedly installed on the coil 20, the second screwing piece 32 is fixedly installed on the valve body assembly 10, the first screwing piece 31 and the second screwing piece 32 are rotatably switched between a connection state and a separation state through relative rotation between the first screwing piece 31 and the second screwing piece 32, further, the coil 20 and the valve body assembly 10 are rotatably switched between the connection state and the separation state indirectly, the coil 20 and the valve body assembly 10 are detachably connected, the installation and the disassembly are simple, and the coil 20 can be installed in multiple angles through rotation of the first screwing piece 31 and the second screwing piece 32, so that the coil 20 is not limited by an assembly angle.
It should be noted that the first rotating element 31 and the second rotating element 32 may be a rotating positioning mechanism, and the specific structure is not limited herein, as long as the first rotating element 31 and the second rotating element 32 can be rotated and switched to realize connection or separation, and the user may select the rotating positioning structure according to the actual production requirement.
In an embodiment, as shown in fig. 1, fig. 2 and fig. 6, the first rotating element 31 is connected to one end of the coil 20, and the first rotating element 31 has an opening 311a through which the second rotating element 32 passes; the second rotating element 32 penetrates the first rotating element 31 from the opening 311a, and rotates along the axis of the valve body assembly 10 to a predetermined angle that limits the coil 20 from being separated from the valve body assembly 10 along the axial direction of the valve body assembly 10, so that the first rotating element 31 and the second rotating element 32 are in a connected state.
Optionally, the valve body assembly 10 includes a valve housing 11 and a valve seat 12 connected to each other, and the coil 20 is sleeved on the valve housing 11 and an end of the valve housing 11 away from the valve seat 12 is disposed to extend out of the coil 20. The first screwing member 31 can be fixedly connected with the coil in a welding or injection molding mode, the first screwing member 31 can be arranged in a hat shape, the first screwing member covers one end, extending out of the coil 20, of the valve casing 11, and correspondingly, the second screwing member 32 is connected to one end, extending out of the coil 20, of the valve casing 11, so that the first screwing member 31 can be matched in a rotating mode, and the size of the electronic expansion valve is reduced. The first rotating element 31 has an opening 311a corresponding to the second rotating element 32, the size of the opening 311a is matched with the size of the second rotating element 32, the opening may be in a strip shape, and the width of the second rotating element 32 may be slightly smaller than the width of the opening 311 a. When the coil 20 and the valve body assembly 10 are assembled, the coil 20 is sleeved on the valve housing 11 along the axial direction of the valve body assembly 10, at this time, the second screwing member 32 can be pulled out from the opening 311a of the first screwing member 31, and the first screwing member 31 and the second screwing member 32 are in a separated state. The second predetermined angle of rotation along the axis of the valve body assembly 10 may be 10 °, 30 °, 60 °, 90 °, 120 °, 170 °, which is not limited herein as long as the predetermined angle is not equal to N × 180 ° (N is an integer). If the second screwing element 32 rotates 30 ° along the axis of the valve body assembly 10, the opening 311a of the second screwing element 32 and the opening 311a of the first screwing element 31 are dislocated, so that the second screwing element 32 cannot be pulled out from the opening 311a along the axial direction of the valve body assembly 10, and at this time, the first screwing element 31 and the second screwing element 32 are in a connected state, thereby indirectly achieving the purpose of fixedly mounting the coil 20 on the valve body assembly 10, and enabling the coil 20 to be fixedly mounted on the valve body assembly 10 at multiple angles.
In an embodiment, as shown in fig. 4 and 5, the second screwing element 32 includes a fixing section 321 and a limiting section 322, the fixing section 321 is fixedly connected to the valve body assembly 10, the limiting section 322 extends along a radial direction (e.g., a direction B in fig. 1) of the valve body assembly 10, a height difference along an axial direction of the valve body assembly 10 is formed between the limiting section 322 and the valve body assembly 10, and the limiting section 322 penetrates through the first screwing element 31 from the opening 311 a.
The fixing section 321 is fixedly connected to the valve body assembly 10, and the limiting section 322 extends along the radial direction of the valve body assembly 10 to form a second screwing element 32 in a substantially "T" shape or an inverted "L" shape at the top of the valve body assembly 10.
The height difference between the limiting section 322 and the valve body assembly 10 along the axial direction of the valve body assembly 10 can make a certain space distance between the limiting section 322 and the valve body assembly 10, so that after the limiting section 322 passes through the opening 311a, the limiting section 322 can rotate relative to the first screwing element 31 to the side of the first screwing element 31, which faces away from the valve body assembly 10, so as to limit the first screwing element 31 between the limiting section 322 and the valve body assembly 10.
In this embodiment, the opening 311a may be a strip-shaped hole, and the limiting section 322 may also be a strip-shaped, and for the size design of the limiting section 322, it should be considered that the limiting section 322 can pass through the opening 311a, and after rotating a certain angle, can be limited at one side of the first screwing piece 31 back to the valve body assembly 10.
When coil 20 and valve body subassembly 10 are in the equipment, pass opening 311a with spacing section 322 earlier, rotate on valve body subassembly 10 as coil 20 and rotate in order to drive first closure 31 and rotate the back, spacing section 322 and bar hole circumference dislocation set, spacing section 322 is restricted in one side in first closure 31 deviates from valve body subassembly 10 promptly, thereby can't break away from out from opening 311 a's axial, consequently, then realized whole second closure 32 and first closure 31 and be connected, thereby reach and fix the purpose on valve body subassembly 10 with coil 20, and make the assembly of coil 20 and valve body subassembly 10 simpler.
In the above embodiment, the fixing section 321 may be vertically installed on the valve body assembly 10, so that a height difference along the axial direction of the valve body assembly 10 is formed between the limiting section 322 and the valve body assembly 10, or the fixing section 321 is bent so that a height difference along the axial direction of the valve body assembly 10 is formed between the limiting section 322 and the valve body assembly 10; the fixing section 321 may also be horizontally installed on the valve body assembly 10, and at this time, the thickness of the fixing section 321 in the axial direction of the valve body assembly 10 is greater than the thickness of the limiting section in the axial direction of the valve body assembly 10, so that a height difference along the axial direction of the valve body assembly 10 is formed between one side of the limiting section facing the valve body assembly 10 and the valve body assembly 10, which is not limited here.
In an embodiment, as shown in fig. 4 and 5, the second screwing element 32 further has a bending section 323, and the bending section 323 connects the limiting section 322 and the fixing section 321, so that the limiting section 322 and the fixing section 321 have a height difference along the axial direction of the valve body assembly 10.
Optionally, the bending section 323 may have one bending portion, or may have a plurality of bending portions, which is not limited herein. Two ends of the bending section 323 are respectively connected with the end portions of the limiting section 322 and the fixing section 321, so that the limiting section 322 and the fixing section 321 have a height difference in the axial direction of the valve body assembly 10. The height difference can be matched with the depth of the opening 311a of the first screwing piece 31, so that the axial distance between the fixed section 321 and the valve body assembly 10 is shortened, the thickness of the fixed section 321 along the axial direction of the valve body assembly 10 can be reduced, the weight of the electronic expansion valve is further reduced, and the production cost is saved.
It should be noted that the bending section 323 and the limiting section 322 connected to each other are defined as a set, which may be a set connected to one end of the fixing section 321, or two sets oppositely disposed, and symmetrically connected to the two opposite ends of the fixing section 321, so that when the first screwing member 31 and the second screwing member 32 are in a connected state, the strength is higher, and the second screwing member 32 is not easily damaged.
It should be further noted that, as shown in fig. 4, the limiting section 322 is a strip-shaped arrangement, the limiting section 322 is bent towards the direction departing from the valve body assembly 10 along the two opposite sides of the width direction to form a reinforcing plate 322a, so that the whole limiting section 322 is in a U-shaped plate shape, the structural strength is greatly improved, when the first screwing element 31 and the second screwing element 32 are in a connection state, the limiting section 322 is not deformed, and the connection between the coil 20 and the valve body assembly 10 is firmer and cannot be loosened.
In one embodiment, for facilitating welding, a first protrusion 321a is protruded from one side of the fixing segment 321 facing the valve body assembly 10, or the fixing segment 321 is recessed towards the valve body assembly 10 to form the first protrusion 321a, and the first protrusion 321a is fixedly connected with the valve body assembly 10 by resistance welding.
Alternatively, the first protrusion 321a may be formed by a portion of the fixing segment 321 being recessed toward the direction close to the valve body assembly 10, as shown in fig. 5, that is, a side of the fixing segment 321 close to the valve body assembly 40 has a protrusion, and a side of the fixing segment 321 away from the valve body assembly 10 has a recess corresponding to the protrusion. This first bellying 321a can be protruding locate a hemisphere bump of canned paragraph 321 towards valve body subassembly 10, weld through resistance and get up with valve casing 11 fixed connection of valve body subassembly 10, this first bellying 321a melts and is connected as an organic wholely with valve casing 11 during the welding, make the whole one end surface that deviates from valve seat 12 with valve casing 11 of canned paragraph 321 paste mutually and fixed, need not to use other connecting pieces to fix second spiral part 32 on valve body subassembly 10, when whole second spiral part 32 can stably be fixed on valve casing 11, its fixed mode is simple, fixed with low costs.
In other embodiments, the fixing section 321 may protrude toward the side of the valve body assembly 10 toward the direction close to the valve body assembly 10 to form the first protrusion 321a, and the first protrusion 321a is fixedly connected to the valve housing 11 of the valve body assembly 10 by resistance welding, the first protrusion 321a is melted during welding, and the fixing section 321 is integrally connected and fixed to the end of the valve housing 11 away from the valve seat 12, and it is also not necessary to use other connecting members to fix the second screwing member 32 on the valve body assembly 10.
In other embodiments (not shown), the second screwing element may be in the form of a cap covering the end of the valve housing 11 extending beyond the coil 20 and fixedly connected to the valve housing 11. The second screwing piece can be arranged separately from the valve casing 11, can be fixed by welding, and can also be arranged by injection molding and integral forming, which is not limited herein. Wherein, a containing space is limited between the second screwing piece and the valve casing 11, and a strip-shaped opening communicated with the containing space is arranged at one end of the second screwing piece departing from the valve casing 11. In this case, the first rotating member may be in the shape of a cap including a bottom plate and a sidewall, the periphery of the bottom plate protruding toward the valve body assembly 10 to form the sidewall, and the sidewall is fixedly installed at the end of the coil. The bottom plate is towards one side fixedly connected with fastener of valve body subassembly 10, and this fastener includes along valve body subassembly 10's axial interconnect's connecting block and stopper, and the one end and the bottom plate of connecting block are connected fixedly, and the other end is connected with the middle part of stopper, and connecting block and stopper are along the whole setting of "T" type that is falling of the axial direction of valve body subassembly 10 promptly. When the valve body assembly 10 and the coil 20 are assembled, the coil 20 is sleeved on the valve housing 11 along the axial direction of the valve body assembly 10, and at this time, the limit block of the engaging member enters the accommodating space from the strip-shaped opening, so that the coil 20 is rotated by a certain angle relative to the valve body assembly 10, such as by 10 °, 30 °, 60 °, 90 °, 120 °, and 170 °, which is applicable as long as the value of the rotation angle is not equal to N × 180 ° (N is an integer). When the stopper rotated to misplace with the bar mouth, the stopper can't be extracted from the bar mouth in to realize the fixed connection of coil 20 and valve body subassembly 10, this scheme can realize that coil 20 and valve body subassembly 10's multi-angle can be dismantled and be connected equally.
In one embodiment, the valve body assembly 10 has a mounting end extending out of the coil 20, and the first screwing element 31 is in a cap shape and has a cap body 31a, and the cap body 31a is sleeved on the mounting end of the valve body assembly 10 and connected with the coil 20.
Optionally, this installation end can be the one end that valve seat 12 was kept away from to valve casing 11, be cap-shaped when first spiral piece 31, and connect in coil 20's installation end, under the axial length of coil 20 kept unchangeable circumstances, the length that coil 20 and first spiral piece 31 parcel can be supplied to valve casing 11 part of valve body subassembly 10 is longer for the installation end that valve body subassembly 10 stretched out coil 20 can be wrapped up by first spiral piece 31, realize coil 20 and valve body subassembly 10's axial installation location, electronic expansion valve's application scope is wider.
In one embodiment, the end of the cap 31a connected to the coil 20 protrudes outward in the radial direction of the coil 20 to form a visor 313, and the diameter of the visor 313 is larger than the inner diameter of the coil 20 and smaller than the outer diameter of the coil 20.
Alternatively, the visor 313 may be an annular plate or a strip, which is not limited herein. In this embodiment, in order to fasten the connection between the side wall 312 and the coil 20, the brim 313 is in the shape of a ring plate, so that the contact area between the first rotating member 31 and the coil 20 is larger, the connection between the first rotating member 31 and the coil 20 is more stable, and the structure of the whole electronic expansion valve is more stable and reliable. As an alternative embodiment, the diameter of the visor 313 may be larger than the inner diameter of the coil 20 and smaller than the outer diameter of the coil 20, so that the first screwing member 31 can be connected to the coil 20 more firmly.
In one embodiment, the coil 20 includes an insulating housing 23 and a stator assembly 21, the stator assembly 21 has a metal housing 22, a visor 313 is covered on an end of the metal housing 22, and the first screwing member 31 and the metal housing 22 are covered with the insulating housing 23 by an insulating material.
Alternatively, the insulating housing 23 of the coil 20 may be made of an insulating material such as plastic or resin, so that the outer peripheral wall of the coil 20 is not conductive, thereby improving the safety of the electronic expansion valve. The stator assembly 21 may be a hollow cylinder, and the metal shell 22 of the stator assembly 21 is made of a metal material, such as a cold-rolled plate, which has both conductivity and magnetic permeability. The stator assembly 21 is further provided with windings inside, the metal casing 22 may be in a hollow cylindrical shape, a hollow space for installing the windings is provided between an inner wall and an outer wall of the metal casing 22, and the windings are wound in the hollow space of the metal casing 22. The stator assembly 21 is provided with a channel extending along the axial direction of the coil 20 for the valve body assembly 10 of the electronic expansion valve to pass through, the inner wall surface of the metal shell 22 of the stator assembly is provided with magnetic pole teeth positioned in the channel, the first rotating element is connected with the end part of the metal shell 22 and covers the channel, and the external insulating shell 23 is prevented from entering the inner channel of the stator assembly 21 during injection molding. When fixing the coil 20 and the first screwing part 31, the first screwing part 31 and the stator assembly 21 can be placed in a mold according to an assembly position, the first screwing part 31 and the stator assembly 21 are simultaneously wrapped by an injection molding molten material to form the insulating shell 23, and meanwhile, the first screwing part 31 and the stator assembly 21 are fixedly connected, so that the connecting difficulty of the coil 20 and the first screwing part 31 is greatly reduced, and the production efficiency is improved.
In another embodiment, as shown in fig. 7, the cap 31a is made of a non-metal material, and the cap 31a and the insulating housing 23 are integrally injection molded.
Optionally, in this embodiment, the first screwing element 31 is made of an insulating material, and may be integrally formed with the insulating housing 23 by injection molding, which does not require a solid cap to be connected and fixed with the coil 20, so as to reduce the weight and production cost of the electronic expansion valve. When in processing, the coil 20 is placed in a mould, a mould with an inner space matched with the size of the cap-shaped first screwing piece 31 is placed on the metal shell 22 of the stator assembly 21, the mould and the coil 20 are arranged coaxially, the metal shell 22 and the mould are enveloped by molten resin in the mould by taking the insulating material as resin as an example, and the insulating shell 23 and the first screwing piece 31 which are integrally formed are obtained after cooling, so that the production cost and the difficulty are greatly reduced.
In one embodiment, the cap 31a and the visor 313 are integrally formed, the cap 31a and the visor 313 are made of metal, and the second screwing element 32 is made of metal.
In this embodiment, the cap body 31a and the cap visor 313 are a single metal structural member, the cap visor 313 may be welded and fixed to the metal housing 22, and then the insulating housing 23 covering the metal housing 22, the cap visor 313 and a part of the cap body 31a is formed by injection molding, so as to prevent the first screwing element 31 and the stator assembly 21 from circumferential deviation during the injection molding process, or the insulating housing 23 connecting the metal housing 22, the cap body 31a and the cap visor 313 may be directly formed by injection molding, which is not limited herein.
It should be noted that, normally, the signal applied to the winding of the coil 20 is a low-voltage dc pulse signal, but in a specific case, the coil 20 may be changed into a high-voltage or ultra-high-voltage signal by the installation environment, magnetic field interference, lightning impulse, etc., and therefore, the coil 20 magnetizer needs to be reliably grounded with the outside through the refrigerant pipeline of the refrigeration system, so that the coil 20 magnetizer (i.e., the metal casing 22 and the pole plate) needs to be conductively connected with the valve casing 11 of the electronic expansion valve during the design of the electronic expansion valve, so as to improve the reliability of the electronic expansion valve. Therefore, in this embodiment, the first rotating member 31 and the second rotating member 32 are made of metal members, such as stainless steel, copper, iron, and the like, and when the coil 20 is mounted on the valve body assembly 10, the valve housing 11, the second rotating member 32, the first rotating member 31, and the metal shell 22 of the coil 20 are sequentially communicated, so that the first rotating member 31 made of metal and the second rotating member 32 made of metal communicate the magnetic conductor of the coil 20 with the valve housing 11 of the electronic expansion valve, thereby improving the reliability of the electronic expansion valve.
In one embodiment, the cap 31a includes a bottom plate 311, a peripheral edge of the bottom plate 311 extends along an axial direction of the coil to form a ring at a sidewall 312 of the valve body assembly 10, an end of the sidewall 312 away from the bottom plate 311 is connected to the coil 20, and an opening 311a is formed in the bottom plate 311.
Alternatively, the bottom plate 311 may be circular, the periphery of the bottom plate 311 is protruded toward the direction close to the valve body assembly 10 to form a cylindrical side wall 312, the bottom plate 311 and the side wall 312 enclose a cavity for inserting the valve housing 11, the inner diameter of the side wall 312 may be adapted to the outer diameter of the valve housing 11, so that the first screwing member 31 is more smoothly installed along with the coil 20 rotating around the valve housing 11, wherein an end of the side wall 312 away from the bottom plate 311 is fixed on the upper end face of the metal shell 22 in an overlapping manner, may be fixed on the coil 20 by welding, or may be integrally provided with the coil 20 by injection molding, so that the first screwing member 31 becomes an integral body, which is not limited herein. The opening 311a of the first screwing member 31 can be a strip shape and is arranged on the bottom plate 311, so that when the first screwing member 31 is sleeved on the valve casing 11, a guiding function is performed on the valve body assembly 10, one end of the valve casing 11 departing from the valve seat 12 is abutted to the inner side of the bottom plate 311, and the second screwing member 32 can be inserted into or penetrates through the opening 311a, so that the assembly of the coil 20 is simpler and more convenient.
In an embodiment, the opening 311a is disposed through the bottom plate 311, and when the first screwing element 31 is in the connection state, the position-limiting section 322 is disposed in a staggered manner with respect to the opening 311a, so as to limit the bottom plate 311 between the position-limiting section 322 and the valve body assembly 10.
Optionally, as shown in fig. 6, the opening 311a is a long strip-shaped hole and penetrates through the bottom plate 311, and two ends of the opening 311a in the length direction may respectively extend onto the side wall 312, so that the first screwing member 31 and the second screwing member 32 are more easily matched, and meanwhile, partial material consumption of the side wall 312 may be reduced, thereby further reducing the consumable material of the first screwing member 31 and saving the cost. When first spiral piece 31 is located on valve casing 11 along with coil 20 lid, the spacing section 322 of second spiral piece 32 of fixed mounting on valve casing 11 can stretch out from this opening 311a, so that first spiral piece 31 and second spiral piece 32 rotate certain angle to connection status, spacing section 322 and bottom plate 311 deviate from one side looks butt of valve body subassembly 10 spacing, so as to be spacing with bottom plate 311 between spacing section 322 and valve body subassembly 10, fix coil 20 on valve body subassembly 10, prevent that it from deviating from along the axial of valve body subassembly 10. Compared with the T-shaped slot formed on the side of the bottom plate 311 facing the valve body assembly 10, the opening 311a has a simpler internal structure of the bottom plate 311, and is more convenient to produce and process, thereby further reducing the connection cost between the valve body assembly 10 and the coil 20.
In other embodiments, the opening 311a may be formed only on the bottom plate 311, which is not limited herein.
In an embodiment, a first matching portion 322b is disposed on a side of the limiting section 322 facing the valve body assembly 10, a second matching portion 311b is disposed on a side of the bottom plate 311 facing the limiting section 322, and the second matching portion 311b is in snap-fit connection with the first matching portion 322b, so that when the first screwing element 31 and the second screwing element 32 are screwed to be in a connection state in a separation state, the limiting section 322 is in snap-fit connection with the valve body assembly 10.
Optionally, a first matching portion 322b is disposed on a side of the limiting section 322 facing the valve body assembly 10, the first matching portion 322b may be a hemispherical convex hull, and correspondingly, a second matching portion 311b on a side of the bottom plate 311 facing the limiting section 322 is a groove or a concave pit in snap fit with the convex hull. In this embodiment, taking the second matching portion 311b as an example of a groove, when the first screwing element 31 rotates by a certain angle, the limiting section 322 and the opening 311a are arranged in a staggered manner, at this time, the convex hull on the limiting section 322 is clamped into the groove on the bottom plate 311 for being buckled and limited, so that the coil 20 and the valve body assembly 10 are prevented from rotating circumferentially relatively when not receiving external circumferential force, and the connection between the coil 20 and the valve body assembly 10 is more stable. Meanwhile, because the height of the convex hull is small, the convex hull is easy to be separated from the groove when being subjected to a certain peripheral external force, so that a user can conveniently detach the coil 20 from the valve body assembly 10.
When the first engaging portion 322b is a groove or a recess formed on the side of the limiting section 322 facing the valve body assembly 10, the second engaging portion 311b may be a convex hull or a convex portion formed on the side of the bottom plate 311 facing the limiting section 322, which is not limited herein.
It should be noted that, when the first matching portion 322b on the limiting section 322 is a convex hull, it may be formed by recessing the whole limiting section 322 towards the valve body assembly 10, or by protruding the limiting section 322 towards one side of the valve body assembly 10 to form a convex hull, which is not limited to this, in this embodiment, in consideration of the weight of the limiting section 322, the first matching portion 322b may be formed by recessing the whole limiting section 322 towards the valve body assembly 10.
In an embodiment, the second matching portion 311b is multiple, and the multiple second matching portions 311b are arranged along the circumference of the opening 311 a.
Alternatively, the plurality of second matching portions 311b may be arranged in a circumferential array along the opening 311a, or may be irregularly arranged along the circumference of the opening 311a, and the number of the second matching portions 311b may be 1, 2, 4, 6, 8, or more, which is not limited herein. In this embodiment, as shown in the figure, the second matching portions 311b are 6 arranged along the circumferential array of the central point of the opening 311a, the 6 second matching portions 311b are all arranged on the rotation path of the first matching portion 322b on the limiting section 322, the first screwing piece 31 and the second screwing piece 32 can be connected by rotating at a smaller angle, so as to fix the coil 20 on the valve body assembly 10, and meanwhile, the coil 20 and the valve body assembly 10 are prevented from rotating circumferentially relatively when not subjected to a circumferential external force, so that the coil 20 and the valve body assembly 10 are more simple and convenient to install, the installation cost is low, and multi-angle installation can be realized.
The present invention further provides a refrigeration device, which includes an electronic expansion valve, and the specific structure of the electronic expansion valve refers to the above embodiments, and since the refrigeration device adopts all the technical solutions of all the above embodiments, the refrigeration device at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (16)
1. An electronic expansion valve, comprising:
a valve body assembly;
the coil is sleeved on the periphery of the valve body assembly;
close the subassembly soon, be provided with first spiral piece and second spiral piece, first spiral piece is located the coil, the second spiral piece is located valve body component, first spiral piece and second spiral piece have connected state and detached state, first spiral piece and second spiral piece are in rotatable switching between connected state and the detached state is in during the connected state, will the coil with valve body component links together, is in during the detached state, in order to incite somebody to action the coil with the separation of valve body component.
2. The electronic expansion valve according to claim 1, wherein the first rotating member is connected to one end of the coil, the first rotating member having an opening through which the second rotating member is inserted;
the second screwing piece penetrates through the first screwing piece from the opening, and rotates to a preset angle for limiting the coil to be separated from the valve body assembly along the axial direction of the valve body assembly, so that the first screwing piece and the second screwing piece are in the connection state.
3. The electronic expansion valve according to claim 2, wherein the second screwing member is provided with a fixed section and a limiting section, which are connected with each other, the fixed section is fixedly connected with the valve body assembly, the limiting section extends along a radial direction of the valve body assembly, a height difference along an axial direction of the valve body assembly is provided between the limiting section and the valve body assembly, and the limiting section penetrates through the first screwing member from the opening.
4. The electronic expansion valve according to claim 3, wherein the side of the fixed segment facing the valve body assembly is provided with a first protrusion portion in a protruding manner or the fixed segment is recessed towards the valve body assembly to form a first protrusion portion, and the first protrusion portion is fixedly connected with the valve body assembly by resistance welding.
5. The electronic expansion valve according to claim 3, wherein the second screwing member further has a bending section connecting the limiting section and the fixing section, so that the limiting section and the fixing section have a height difference in an axial direction of the valve body assembly.
6. The electronic expansion valve of claim 3, wherein the valve body assembly has a mounting end extending out of the coil, and the first screwing element is in the shape of a cap having a cap body, the cap body being sleeved on the mounting end of the valve body assembly and connected to the coil;
the coil has an insulating housing.
7. The electronic expansion valve of claim 6, wherein an end of the cap body connected to the coil protrudes outward in a radial direction of the coil to form a visor, and a diameter of the visor is larger than an inner diameter of the coil and smaller than an outer diameter of the coil.
8. The electronic expansion valve according to claim 7, wherein the coil is provided with a stator assembly having a metal housing, the visor cover is provided at an end of the metal housing, and the first convolution and the metal housing are covered with the insulating housing.
9. The electronic expansion valve of claim 6, wherein the cap body is made of a non-metallic material, and the cap body and the insulating housing are integrally injection molded.
10. The electronic expansion valve of claim 7, wherein the cap and the visor are integrally formed, the cap and the visor are made of metal, and the second screwing member is made of metal.
11. The electronic expansion valve according to any of claims 6-10, wherein the cap is provided with a base plate, the periphery of the base plate extending in the axial direction of the coil is formed as a ring on a side wall of the valve body assembly, an end of the side wall remote from the base plate is connected to the coil, and the opening is provided in the base plate.
12. The electronic expansion valve of claim 11, wherein the opening extends through the base plate, and the position-limiting section is disposed in a staggered manner with respect to the opening when the first screwing member is in the connection state, so as to limit the base plate between the position-limiting section and the valve body assembly.
13. The electronic expansion valve according to claim 12, wherein a first engaging portion is disposed on a side of the limiting section facing the valve body assembly, a second engaging portion is disposed on a side of the bottom plate facing the limiting section, the second engaging portion is in snap-fit connection with the first engaging portion, and the first engaging portion is snapped into the second engaging portion when the first screwing piece and the second screwing piece are rotated to be in the connection state in the separation state.
14. The electronic expansion valve of claim 13, wherein the first mating portion is a convex hull and the second mating portion is a groove that snap-fits into the convex hull.
15. The electronic expansion valve according to claim 13, wherein the second engagement portion is provided in plurality, and the plurality of second engagement portions are provided in a circumferential direction of the opening.
16. A refrigeration device comprising an electronic expansion valve according to any of claims 1-15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210393114.1A CN114484049B (en) | 2022-04-15 | 2022-04-15 | Electronic expansion valve and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210393114.1A CN114484049B (en) | 2022-04-15 | 2022-04-15 | Electronic expansion valve and refrigeration equipment |
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| Publication Number | Publication Date |
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| CN114484049A true CN114484049A (en) | 2022-05-13 |
| CN114484049B CN114484049B (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210393114.1A Active CN114484049B (en) | 2022-04-15 | 2022-04-15 | Electronic expansion valve and refrigeration equipment |
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