CN113203227A - Electronic expansion valve and refrigeration equipment - Google Patents
Electronic expansion valve and refrigeration equipment Download PDFInfo
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- CN113203227A CN113203227A CN202110498035.2A CN202110498035A CN113203227A CN 113203227 A CN113203227 A CN 113203227A CN 202110498035 A CN202110498035 A CN 202110498035A CN 113203227 A CN113203227 A CN 113203227A
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- filter
- electronic expansion
- expansion valve
- section
- valve
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 40
- 238000001914 filtration Methods 0.000 claims abstract description 26
- 230000000670 limiting effect Effects 0.000 claims description 54
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000002829 reductive effect Effects 0.000 description 22
- 238000009434 installation Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Surgical Instruments (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an electronic expansion valve and refrigeration equipment, wherein the electronic expansion valve comprises a valve body, two guide pipes and a plurality of filtering devices, the guide pipes are connected with the valve body, and each guide pipe comprises a guide pipe body; the plurality of filtering devices includes a first filter mounted within the catheter body for filtering fluid passing through the catheter body. The technical scheme of the invention simplifies the processing process and reduces welding spots.
Description
Technical Field
The invention relates to the technical field of electronic expansion valves, in particular to an electronic expansion valve and refrigeration equipment.
Background
In the related art, one end of the filter is fixedly connected with the connecting pipe (the liquid inlet pipe or the liquid outlet pipe), and the other end of the filter is connected with the electronic expansion valve, so that abnormal sound is reduced, foreign matters are filtered, the fixing modes of all the connecting parts are all welded and fixed, welding spots are more, the processing process is complicated, and the processing cost is higher. In addition, the two ends of the filter are easily installed reversely during field assembly, and the filter needs to be reworked and disassembled again for welding, so that the filter is damaged, the material is wasted, and the installation cost is generated.
Disclosure of Invention
The invention mainly aims to provide an electronic expansion valve and refrigeration equipment, aiming at simplifying the processing process and reducing welding spots.
In order to achieve the above object, the electronic expansion valve provided by the present invention comprises a valve body, two conduits and a plurality of filtering devices, wherein the conduits are connected with the valve body and comprise conduit bodies; the plurality of filtering devices includes a first filter mounted within the catheter body for filtering fluid passing through the catheter body.
In one embodiment the catheter body has an inner diameter of 8 mm or greater.
In one embodiment, the opening of the first filter is directed towards the valve body.
In one embodiment, the first filter includes a strainer tray and a strainer mounted to the strainer tray.
In an embodiment, the guide pipe body has a first end connected with the valve body and a second end opposite to the first end, the filter screen seat is annularly arranged, the filter screen seat is provided with a slot opening facing the second end, and the edge of the filter screen is inserted into the slot.
In one embodiment, the filter screen is in a net bag shape, or a conical shape, or an oval shape, or a disk shape.
In one embodiment, the mesh number of the filter screen is greater than or equal to 80 meshes.
In one embodiment, the inner wall of the catheter body is provided with a limiting groove for limiting the axial displacement of the first filter along the catheter body.
In one embodiment, the first filter is at least partially retained in the retaining groove.
In one embodiment, the conduit body comprises a filter section and an extension section connected with the filter section, the first filter is arranged on the filter section, and the extension section is used for being connected with a pipeline of a refrigeration system; a necking section is connected between the filtering section and the extension section, and the pipe diameter of the necking section is gradually decreased from the filtering section to the extension section.
In one embodiment, the inner wall of the conduit body is provided with a limiting part for limiting the insertion position of a pipeline of the refrigeration system.
In an embodiment, a distance from the limiting portion to the second end is greater than or equal to 10 mm.
The invention also provides refrigeration equipment which comprises an electronic expansion valve, wherein the electronic expansion valve comprises a valve body, two guide pipes and a plurality of filtering devices, the guide pipes are connected with the valve body, and each guide pipe comprises a guide pipe body; the plurality of filtering devices includes a first filter mounted within the catheter body for filtering fluid passing through the catheter body.
According to the technical scheme, the first filter is arranged in the guide pipe body of the guide pipe, and the guide pipe body is connected with the valve body, so that fluid passing through the guide pipe body is filtered, abnormal sound is reduced, and the first filter and the guide pipe body are integrally arranged; on the other hand, the standardized arrangement of parts is realized, the number of parts connected is reduced, the misassembly risk during field installation is reduced, the damage to the filtering device is avoided, and the installation cost is reduced; moreover, the occupied space is saved, the volume of the system is reduced, the system is convenient to set in a miniaturized mode and accept by users, and the popularization of products is facilitated.
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 schematic structural view of one embodiment of the catheter of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
FIG. 5 is a schematic structural view of another embodiment of the catheter of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at C;
FIG. 7 is a schematic structural diagram of an electronic expansion valve according to another embodiment of the present invention;
FIG. 8 is a schematic structural diagram of an electronic expansion valve according to yet another embodiment of the present invention;
FIG. 9 is an enlarged view of a portion of FIG. 8 at D;
FIG. 10 is a schematic structural diagram of an electronic expansion valve according to yet another embodiment of the present invention;
FIG. 11 is an enlarged view of a portion of FIG. 10 at E;
fig. 12 is a partial enlarged view of fig. 10 at F.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | |
| 10 | |
120 | |
|
| 20 | Valve |
130 | |
|
| 21 | Valve |
131 | Limiting |
|
| 22 | Valve core seat | 141 | A |
|
| 100 | |
142 | Connecting |
|
| 100a | First end | 151 | A |
|
| 100b | |
152 | |
|
| | Limiting groove | 160 | |
|
| 101 | First limit bulge | 170 | |
|
| 102 | |
180 | |
|
| 103 | Third limiting |
200 | |
|
| 104 | |
210 | |
|
| 105 | Fifth limiting |
211 | Inserting |
|
| 110 | |
220 | Filter screen |
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, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. 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 invention provides an electronic expansion valve and refrigeration equipment comprising the same.
Referring to fig. 1 to 3, in an embodiment of the present invention, the electronic expansion valve includes a valve body 20 and a conduit 10, and the valve body 20 is connected to the conduit 10. The number of the conduits 10 can be one, or a plurality of conduits, that is, a conduit 10 can be connected to the valve body 20, and the fluid flows into the valve body 20 from the conduit 10 and flows out of the valve body 20 from the conduit 10; multiple conduits 10 may also be connected, such as when two conduits 10 are connected, fluid may flow into one of the conduits 10 and out of the other conduit 10. Both conduits 10 may be straight or both curved or a straight or a curved conduit.
Referring to fig. 1 to 2, the duct 10 includes a duct body 100, the duct body 100 having a first end 100a and a second end 100b, the first end 100a being used for connecting with the valve body 20, and the second end 100b being opposite to the first end 100 a. Referring to fig. 1 and 7, the electronic expansion valve further includes a plurality of filtering devices, the plurality of filtering devices including a first filter 200, the first filter 200 being installed in the conduit body 100, the first filter 200 being used for filtering the fluid passing through the conduit body 100.
Referring to fig. 1 to 2, the first end 100a of the catheter body 100 may be connected to the valve body 20 so as to transfer the fluid in the catheter body 100 into the valve body 20 or transfer the fluid in the valve body 20 into the catheter body 100. The second end 100b of the duct body 100 may be connected to a pipe of a refrigeration system to perform fluid transfer.
In order to stabilize the fluid condition in the conduit body 100 and filter the foreign matters in the fluid, and prevent the valve body 20 of the electronic expansion valve from being clogged by welding slag, welding skin or other impurities during the installation process, referring to fig. 1 and 2, a first filter 200 is installed in the conduit body 100 to stabilize the fluid condition, reduce abnormal noise, and filter the foreign matters. The first filter 200 may be installed at a position where the pipe body 100 is close to the valve body 10, at a position where the pipe body 100 is far from the valve body 10, or between the first end 100a and the second end 100b, as long as the first filter 200 can filter the passing fluid.
It can be understood that the pipe diameter of the conduit body 100 of the portion where the first filter 200 is installed may be larger than the pipe diameters of other portions, or may be equal to the pipe diameters of other portions, and may be specifically set according to the size of the first filter 200. The first filter 200 may have various structures as long as it can filter the fluid passing through the catheter body 100; the number of the first filter 200 may be one or more. In one embodiment, a plurality of first filters 200 are installed in the conduit body 100 of one conduit, and the mesh number and/or mesh shape of the plurality of first filters 200 are different, so that the passing fluid is filtered in multiple stages, thereby preventing the valve body 20 of the electronic expansion valve from being blocked.
Referring to fig. 1 and 5, when the conduit 10 is an elbow, the conduit body 100 includes a bending portion 141 and a connecting portion 142, and the first filter 200 can be installed in the connecting portion 142, so as to facilitate the installation of the first filter 200 and the conduit body 100 and improve the stability of the connection between the first filter 200 and the conduit body 100.
Since the pipeline of the refrigeration system is usually a copper pipe, the material of the conduit body 100 may be a copper material, and since the pipeline of the refrigeration system is the same as the material of the conduit body 100, the conduit body 100 and the pipeline of the refrigeration system are easily connected, and the stability of the connection between the conduit body 100 and the pipeline of the refrigeration system is also improved. The material of the duct body 100 may also be steel, and a copper layer is disposed on the inner wall surface or the outer wall surface of the second end 100b of the duct body 100, so that not only is the production cost of the duct body 100 reduced, but also the stability of the connection between the duct body 100 and the refrigeration system is ensured.
Alternatively, referring to fig. 7, the catheter body 100 includes a first tube 151 and a second tube 152 connected to the first tube 151, the first tube 151 is used for being connected to the valve body 20, and the second tube 152 is used for being connected to a pipeline of a refrigeration system, wherein the first tube 151 is made of steel, and the second tube 152 is made of copper, so as to reduce the usage amount of copper. Wherein, the valve body 20 can be made of steel, the valve body 20 is welded to the first pipe body 151, and the first pipe body 151 is welded to the second pipe body 151, so as to connect the valve body 20 and the catheter body 100.
Referring to fig. 1 to 2 and 5, according to the present invention, the first filter 200 is installed inside the pipe body 100 of the pipe 10, and the pipe body 100 is communicated with the valve body 20, so as to filter the fluid passing through the pipe body 100 and reduce abnormal noise, thereby achieving an integrated arrangement of the first filter 200 and the pipe body 100. On one hand, a filtering device does not need to be welded in a pipeline of the refrigerating system, so that welding spots are reduced, the installation procedure is simplified, the installation efficiency is improved, and the system cost is reduced; on the other hand, the standardized arrangement of parts is realized, the number of the parts is reduced, the misassembly risk during field installation is reduced, the filter device is prevented from being damaged, and the installation cost is reduced. Moreover, the occupied space is saved, the volume of the system is reduced, the system is convenient to set in a miniaturized mode and accept by users, and the popularization of products is facilitated.
In an embodiment, the inner diameter of the catheter body 100 is greater than or equal to 8 mm, so as to avoid that the inner diameter of the catheter body 100 is too small to facilitate the installation of the first filter 200; on the other hand, the first filter 200 is prevented from being too small as a whole and blocking the duct body 100; on the other hand, the sectional area flow of the duct body 100 is increased, the flow velocity of the fluid and the pressure on the duct body 100 are prevented from being too large, the condition of the fluid is further stabilized, and the noise is reduced.
Referring to fig. 1 to 2, in an embodiment, the opening of the first filter 200 faces the first end 100a of the conduit body 100, so that a contact area between the first filter 200 and the fluid is increased, a flow area of the fluid is increased, impurities in the fluid are intercepted by the first filter 200 and stay at the first filter 200 or a gap between the first filter 200 and the conduit body 100, and therefore, the electronic expansion valve is ensured not to be blocked, a condition of the fluid (such as turbulent flow, and the like) is stabilized, and abnormal sound is reduced.
Referring to fig. 2 to 3, in an embodiment, the first filter 200 includes a filter base 210 and a filter 220, and the filter 220 is mounted on the filter base 210. The first filter 200 is positioned by mounting the filter mesh holder 210 on the catheter body 100, thereby mounting the first filter 200 in the catheter 10. In order to improve the stability of the connection between the filter screen 220 and the filter screen base 210, the filter screen base 210 may be made of a metal material (such as stainless steel or copper material), so that the connection between the filter screen base 210 and the catheter body 100 is stable and reliable. The shape of the filter screen 220 can be a net bag shape, a conical shape, an oval shape or a disk shape, and the mesh number of the filter screen 220 is more than or equal to 80 meshes so as to prevent the filter screen from being blocked due to too small number.
Referring to fig. 3, in an embodiment, the strainer holder 210 is integrally disposed in a ring shape, the strainer holder 210 has a slot 211, a notch of the slot 211 faces the second end 100b of the duct body 100, and an edge of the strainer 220 is inserted into the slot 211. The strainer tray 210 may be a ring-shaped structure, and the peripheral edges of the strainer 220 are inserted into the insertion grooves 211 of the strainer tray 210 to mount the strainer 220 and the strainer tray 210 together. The inner wall of the slot 211 may be provided with a positioning member protruding into and passing through the filter 220, so as to fix the filter 220 and prevent the filter 220 from separating from the filter base 210. It will be appreciated that the locating member may be a projection.
In order to position the first filter 200 in the catheter body 100 so that the first filter 200 can stably filter impurities and improve the stability of the fluid condition, referring to fig. 3 and 6, in an embodiment, a limiting groove 100c is provided on an inner wall of the catheter body 100, and the limiting groove 100c is used for limiting the displacement of the first filter 200 in the axial direction of the catheter body 100. Because the fluid flows along the axial direction of the catheter body 100, the first filter 200 is positioned in the axial direction of the catheter body 100 by arranging the limiting groove 100c in the axial direction of the catheter body 100, that is, the direction of the acting force of the fluid on the first filter 200 is in the same straight line with the flowing direction of the fluid, so that the stress on the first filter 200 is uniform, and the catheter body 100 stably and firmly positions the first filter 200.
It should be noted that the entire first filter 200 may be located in the limiting groove 100c, and the limiting groove 100c is larger than or equal to the first filter 200, so as to limit the movement of the first filter 200. Referring to fig. 1 to 3, the first filter 200 may be partially disposed in the limiting groove 100c, and the limiting groove 100c is smaller than the first filter 200, so that the first filter 200 is at least partially limited in the limiting groove 100c, and the movement of the whole first filter 200 is further limited. When the first filter 200 includes the filter base 210 and the filter 220, the filter base 210 is limited in the limiting groove 100 c. The movement of the first filter 200 is restricted by the screen holder 210 being restricted by the restricting groove 100 c.
Referring to fig. 5 to 6, in an embodiment, the inner wall of the catheter body 100 is provided with first limiting protrusions 101 and second limiting protrusions 102 at intervals, the first limiting protrusions 101 and the second limiting protrusions 102 are arranged at intervals along the axial direction of the catheter body 100, and a limiting groove 100c is formed between the first limiting protrusions 101 and the second limiting protrusions 102.
Referring to fig. 6, the first limiting protrusion 101 and the second limiting protrusion 102 are respectively disposed on the inner wall of the catheter body 100, so that the inner diameter of the catheter body 100 at the position of the first limiting protrusion 101 is reduced, and the inner diameter of the catheter body 100 at the position of the second limiting protrusion 102 is also reduced, thereby limiting the axial displacement of the first filter 200 in the catheter body 100, without adaptively improving the size of the first filter 200, and the practicability is strong. By providing the first and second restriction protrusions 101 and 102, a restriction groove 100c is formed between the first and second restriction protrusions 101 and 102 to restrict the movement of the first filter 200.
With continued reference to fig. 6, in an embodiment, the first position-limiting protrusion 101 may be a first protruding point or a first protruding ring, and the second position-limiting protrusion 102 may be a second protruding point or a second protruding ring, so that the first filter 200 is limited between the first position-limiting protrusion and the second position-limiting protrusion by the cooperation of the first position-limiting protrusion 101 and the second position-limiting protrusion 102. The first filter 200 may be mounted by disposing one of the first limit protruding point and the second limit protruding 102 in the catheter body 100, then disposing the first filter 200 in the catheter body 100, and disposing the other of the first limit protruding point and the second limit protruding 102, thereby fixing the first filter 200.
Specifically, when the first limiting protrusion 101 is a first convex ring, the first convex ring is disposed along the circumferential direction of the catheter body 100; when the first limiting protrusion 101 is a first protruding point, the first protruding point may be one, or may be multiple, and the multiple first protruding points are arranged at intervals along the circumferential direction of the catheter body 100. Similarly, the second convex ring and the second convex point can also be arranged by referring to the first convex ring and the first convex point, and are not described in detail herein.
Unlike the previous embodiment, referring to fig. 2 to 3, in an embodiment, the inner wall surface of the catheter body 100 may be provided with a third limiting protrusion 103; meanwhile, the duct body 100 is provided with a divergent section 104, and the diameter of the divergent section 104 is gradually increased from the first end 100a of the duct body 100 to the second end 100b of the duct body 100, so that the limiting groove 100c is formed between the divergent section 104 and the third limiting protrusion 103.
Referring to fig. 2 to 3, the diverging section 104 is located between the first end 100a of the catheter body 100 and the second end 100b of the catheter body 100, and the inner diameter of the first end 100a of the catheter body 100 is smaller than the inner diameter of the diverging section 104, so as to limit the movement of the first filter 200 toward the first end 100a of the catheter body 100. A third limiting protrusion 103 may be further disposed on the inner wall of the catheter body 100, the third limiting protrusion 103 is close to the second end 100b relative to the diverging section 104, and the inner diameter of the catheter body 100 at the position of the third limiting protrusion 103 is reduced, so as to limit the movement of the first filter 200 toward the second end 100b, and further limit the displacement of the first filter 200 in the axial direction of the catheter body 100.
It is understood that a fourth limiting protrusion may be disposed on the inner wall of the catheter body 100, the catheter body 100 is provided with a tapered section, the diameter of the tapered section decreases from the first end 100a of the catheter body 100 to the second end 100b of the catheter body 100, and the limiting groove 100c is formed between the tapered section and the fourth limiting protrusion. Those skilled in the art can understand that the structure of the fourth limiting protrusion can refer to the structure of the first limiting protrusion 101, and has the beneficial effects brought by the technical solutions of the corresponding embodiments, which are not described in detail herein.
To further reduce noise generated due to unstable fluid conditions, referring to fig. 2 and 4, in one embodiment, the duct body 100 may include a filter segment 110 and an extension segment 120, wherein the filter segment 110 is connected to the extension segment 120, the first filter 200 is installed in the filter segment 110 to filter fluid passing through the filter segment 110, and the extension segment 120 is used for connecting to a pipe of a refrigeration system; a neck section 130 is connected between the filtering section 110 and the extension section 120, and the pipe diameter of the neck section 130 is gradually reduced from the filtering section 110 to the extension section 120. Referring to fig. 2 and 4, the inner diameter of the filter segment 110 may be greater than 8 mm.
Referring to fig. 4, since the pipe diameter of the necking section 130 decreases progressively from the filtering section 110 to the extension section 120, and the pipe diameters of the necking section 130 and the extension section 120 are smaller than that of the filtering section 110, not only the amount of pipe diameter materials is reduced, but also the cost is saved, and the normal connection with the pipeline of the refrigeration system is avoided being influenced by the overlarge pipe diameter; in addition, by utilizing the principle of the silencer, the noise generated by fluid impact can be improved, and the noise generated by the fluid impact is further reduced. Referring to fig. 7, when the catheter body 100 includes a first tube 151 and a second tube 152, the diameter of the second tube 152 may be smaller than that of the first tube 151; and/or, the second tube 152 is provided with a transition section, and the inner diameter of the transition section decreases progressively from the first end 100a to the second end 100 b; alternatively, the inner diameter of the second tube 152 gradually decreases from the first end 100a to the second end 100b, so that the flow velocity of the fluid flowing from the first end 100a to the second end 100b is gradually changed, thereby reducing the impact between the fluid and the wall of the conduit body 100 and reducing the noise.
The duct body 100 may be inserted into a pipeline of the refrigeration system, or the pipeline of the refrigeration system may be inserted into the duct body 100, and in order to position the pipeline of the refrigeration system and prevent the pipeline of the refrigeration system from being inserted too deeply to damage the first filter 200, referring to fig. 2 and 4, in an embodiment, the inner wall of the extension section 120 is provided with a limiting portion 131 for limiting the insertion position of the pipeline of the refrigeration system. In-process that extension section 120 was stretched into to refrigerating system's pipeline, spacing portion 131 carries on spacingly to refrigerating system's pipeline, blocks that refrigerating system's pipeline removes toward pipe body 100, avoids refrigerating system's pipeline excessively to insert in the pipe body 100 to stab the first filter 200 in the extension section 120, play the guard action to first filter 200, the equipment work of the pipe body 100 of being convenient for and refrigerating system's pipeline improves work efficiency.
With continued reference to fig. 2 and 4, in one embodiment, the length of the extension 120 is greater than or equal to 10 mm. By limiting the length of the extension section 120 to be not less than 10 mm, on one hand, the length of the extension section 120 is prevented from being too short, which is not beneficial to the pipeline connection of the conduit body 100 and the refrigeration system; on the other hand, the extension portion 120 is provided with a stopper 131 to prevent the first filter 200 from being damaged by the refrigerant system pipe inserted too deeply into the duct body 100.
The structure of the first filter 200 can be varied, and in one embodiment, referring to fig. 8, the first filter 200 is a disc-shaped structure. The first filter 200 may be installed at an end of the guide tube body 100 near the valve body 20, or at a position between both ends of the guide tube body 100. With continued reference to fig. 8, the catheter body 100 has an abutting section 180, the pipe diameter of the abutting section 180 increases from the end close to the valve body 20 to the end far from the valve body 20, and the first filter 200 is located at the abutting section 180. When fluid flows into the valve body 20 from the end of the conduit body 100 far away from the valve body 20, the pipe diameter of the abutting section 180 decreases gradually from the end far away from the valve body 20 to the end close to the valve body 20, so that the first filter 200 is limited from moving towards the valve body 20, and the first filter 200 is limited.
Referring to fig. 8, the abutting section 180 may be disposed at an end close to the valve body 20, and when the catheter body 100 is inserted into the valve body 20 of the electronic expansion valve, the abutting section 180 abuts against an outer wall of the valve body 20 to limit the catheter body 100 from moving further into the valve body 20, so as to position the catheter body 100; meanwhile, the upper side and the lower side of the part of the conduit body 100 close to the abutting section 180 are limited by the valve body 20, so that the pipe diameter of the part of the conduit body 100 close to the abutting section 180 is prevented from being expanded and deformed by the first filter 200, and the limiting stability of the first filter 200 is ensured.
Referring to fig. 8 and 10, in an embodiment, the valve body 20 includes a valve housing 21 and a valve seat 22 installed on the valve housing 21, the conduit body 100 is connected to the valve seat 22, and one end of the first filter 200 close to the valve body 20 abuts against the valve seat 22.
Referring to fig. 8 and 9, the valve core seat 22 is connected to the pipe body 100 and extends into the pipe body 100, and the valve core seat 22 abuts against the first filter 200, so that the first filter 200 is limited from moving toward the valve body 20, and the first filter 200 is limited. It is understood that the conduit body 100 may be connected to the valve housing 21 and that the conduit body 100 may be a straight tube.
To limit the movement of the first filter 200 in the direction away from the valve body 20, please refer to fig. 8 and 9, in an embodiment, the duct body 100 is provided with a necking section 160, and the diameter of the necking section 160 decreases from the first end 100a to the second end 100b, so as to form a limiting groove 100c between the necking section 160 and the valve core seat 22, and limit the movement of the first filter 200 in the direction of the second end 100 b. As such, displacement of the first filter 200 in the axial direction of the conduit body 100 is restricted by the cooperation of the necked-down section 160 with the cartridge seat 22, thereby restricting the first filter 200 within the conduit body 100.
Unlike the previous embodiment, referring to fig. 10 and 11, in an embodiment, the inner wall of the conduit body 100 is provided with a fifth limiting protrusion 105, and the fifth limiting protrusion 105 is matched with the valve core seat 22 to form a limiting groove 100c between the reduced section 160 and the valve core seat 22, so as to limit the displacement of the first filter 200 in the axial direction of the conduit body 100.
Referring to fig. 8 and 10, the electronic expansion valve may further include a second conduit 12 communicating with the valve body 20, and the second conduit 12 is the conduit 10. The second conduit 12 may be an elbow, and the fluid may flow from the second conduit 12 into the valve body 20 and out of the first conduit 11; or the fluid flows from the first conduit 11 into the valve body 20 and then out of the second conduit 12.
Referring to fig. 10 and 12, in one embodiment, the first filter 200 is in interference fit with the second conduit 12, thereby positioning the first filter 200. It may be that the conduit body 100 has an interference connection section 170, an outer wall of the interference connection section 170 is inserted into the valve housing 21, and an inner wall of the interference connection section 170 is in interference fit with the first filter 200. Because the upper and lower both sides of interference linkage section 170 receive valve body 21 restriction, the pipe diameter of interference linkage section 170 is difficult to be propped big deformation, has guaranteed first filter 200 and interference linkage section 170 interference fit's stability.
The electronic expansion valve may further include a driving assembly and a valve needle assembly, both of which are installed in the valve body 20, the driving assembly being connected to the valve needle assembly to drive the valve needle assembly to move and adjust the opening degree of the valve, thereby rapidly controlling the flow rate of the fluid passing through the valve body 20.
In one embodiment, a valve chamber is provided in the valve housing 21, and the plurality of filtering devices may further include a second filter mounted in the valve chamber for filtering fluid entering the valve chamber. The second filter may be disposed around the valve needle assembly and may also cover the fluid inlet of the valve housing 21.
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 refrigeration equipment can be an air conditioner, a refrigerator, an ice chest, a fan with a refrigeration function and the like.
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 (13)
1. An electronic expansion valve, comprising:
a valve body;
two conduits connected to the valve body, the conduits comprising a conduit body;
a plurality of filtration devices including a first filter mounted within the catheter body for filtering fluid passing through the catheter body.
2. The electronic expansion valve of claim 1, wherein the conduit body has an inner diameter of 8 mm or more.
3. The electronic expansion valve of claim 1, wherein the opening of the first filter is directed towards the valve body.
4. The electronic expansion valve of claim 1, wherein the first filter comprises a screen holder and a screen mounted to the screen holder.
5. The electronic expansion valve according to claim 4, wherein the conduit body has a first end connected to the valve body and a second end opposite to the first end, the strainer base is annularly disposed, the strainer base has a slot with a notch facing the second end, and an edge of the strainer is inserted into the slot.
6. The electronic expansion valve of claim 4, wherein the screen is in the shape of a net bag or a cone or an oval or a disc.
7. The electronic expansion valve of claim 4, wherein the mesh size of the screen is 80 mesh or larger.
8. The electronic expansion valve according to any of claims 1 to 7, wherein the inner wall of the conduit body is provided with a limiting groove that limits the axial displacement of the first filter along the conduit body.
9. The electronic expansion valve of claim 8, wherein the first filter is at least partially retained within the retaining groove.
10. The electronic expansion valve according to any of claims 1 to 7, wherein the conduit body comprises a filter section to which the first filter is mounted and an extension section connecting the filter section for connection with a pipe of a refrigeration system; a necking section is connected between the filtering section and the extension section, and the pipe diameter of the necking section is gradually decreased from the filtering section to the extension section.
11. The electronic expansion valve of claim 10, wherein the inner wall of the extension section is provided with a stopper for limiting a pipe insertion position of the refrigeration system.
12. The electronic expansion valve of claim 10, wherein the length of the extension segment is 10 mm or greater.
13. Refrigeration device, comprising an electronic expansion valve according to any of claims 1 to 12.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110498035.2A CN113203227A (en) | 2021-05-07 | 2021-05-07 | Electronic expansion valve and refrigeration equipment |
| CN202310442835.1A CN116499145A (en) | 2021-05-07 | 2021-05-07 | Electronic expansion valve and refrigeration equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110498035.2A CN113203227A (en) | 2021-05-07 | 2021-05-07 | Electronic expansion valve and refrigeration equipment |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310442835.1A Division CN116499145A (en) | 2021-05-07 | 2021-05-07 | Electronic expansion valve and refrigeration equipment |
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| CN113203227A true CN113203227A (en) | 2021-08-03 |
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| CN202310442835.1A Pending CN116499145A (en) | 2021-05-07 | 2021-05-07 | Electronic expansion valve and refrigeration equipment |
| CN202110498035.2A Pending CN113203227A (en) | 2021-05-07 | 2021-05-07 | Electronic expansion valve and refrigeration equipment |
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| CN202310442835.1A Pending CN116499145A (en) | 2021-05-07 | 2021-05-07 | Electronic expansion valve and refrigeration equipment |
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| JP2009243644A (en) * | 2008-03-31 | 2009-10-22 | Nippon Petroleum Refining Co Ltd | Flow distributor and flow distribution system |
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| CN105822769A (en) * | 2015-01-06 | 2016-08-03 | 艾默生环境优化技术(苏州)有限公司 | Electronic expansion valve |
| JP2016217542A (en) * | 2015-05-14 | 2016-12-22 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド | Refrigerant distributor and manufacturing method thereof |
| CN207848582U (en) * | 2017-12-22 | 2018-09-11 | 佛山科学技术学院 | A kind of electric expansion valve |
| CN209763561U (en) * | 2018-12-13 | 2019-12-10 | 苏州华越金属有限公司 | connecting pipe of electronic expansion valve and air conditioning equipment |
| CN211059467U (en) * | 2019-06-13 | 2020-07-21 | 浙江盾安禾田金属有限公司 | Valve silencer and electronic expansion valve thereof |
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2021
- 2021-05-07 CN CN202310442835.1A patent/CN116499145A/en active Pending
- 2021-05-07 CN CN202110498035.2A patent/CN113203227A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009243644A (en) * | 2008-03-31 | 2009-10-22 | Nippon Petroleum Refining Co Ltd | Flow distributor and flow distribution system |
| CN203907004U (en) * | 2014-06-03 | 2014-10-29 | 美的集团武汉制冷设备有限公司 | Expansion valve and air conditioner with same |
| CN105822769A (en) * | 2015-01-06 | 2016-08-03 | 艾默生环境优化技术(苏州)有限公司 | Electronic expansion valve |
| JP2016217542A (en) * | 2015-05-14 | 2016-12-22 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド | Refrigerant distributor and manufacturing method thereof |
| CN207848582U (en) * | 2017-12-22 | 2018-09-11 | 佛山科学技术学院 | A kind of electric expansion valve |
| CN209763561U (en) * | 2018-12-13 | 2019-12-10 | 苏州华越金属有限公司 | connecting pipe of electronic expansion valve and air conditioning equipment |
| CN211059467U (en) * | 2019-06-13 | 2020-07-21 | 浙江盾安禾田金属有限公司 | Valve silencer and electronic expansion valve thereof |
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| CN116499145A (en) | 2023-07-28 |
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Application publication date: 20210803 |