CN116499145A - Electronic expansion valve and refrigeration equipment - Google Patents
Electronic expansion valve and refrigeration equipment Download PDFInfo
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- CN116499145A CN116499145A CN202310442835.1A CN202310442835A CN116499145A CN 116499145 A CN116499145 A CN 116499145A CN 202310442835 A CN202310442835 A CN 202310442835A CN 116499145 A CN116499145 A CN 116499145A
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- Prior art keywords
- filter
- electronic expansion
- expansion valve
- valve
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 40
- 238000001914 filtration Methods 0.000 claims abstract description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 230000000670 limiting effect Effects 0.000 claims description 49
- 230000007423 decrease Effects 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 230000002829 reductive effect Effects 0.000 description 23
- 238000009434 installation Methods 0.000 description 11
- 230000002159 abnormal effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 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
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 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
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- 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, wherein the guide pipes are connected with the valve body, the guide pipes comprise guide pipe bodies, the guide pipe bodies are provided with opposite first ends and second ends, and the first ends are used for being connected with the valve body; the catheter body is made of copper; the plurality of filtering devices comprise a first filter, the first filter is installed in the catheter body, the first filter comprises a filter screen seat and a filter screen installed in the filter screen seat, and the first filter is used for filtering fluid passing through the catheter body. The technical scheme of the invention simplifies the processing process and reduces welding spots.
Description
The present application is a divisional application of chinese patent application with application number of "202110498035.2" and application name of "electronic expansion valve and refrigeration device" on application day 2021, month 05 and 07.
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 a connecting piping (a liquid inlet pipe or a liquid outlet pipe), and the other end of the filter is connected with an electronic expansion valve, so that abnormal sound is reduced, foreign matters are filtered, and the fixing modes of all the connecting positions are welded and fixed, so that welding spots are more, the processing process is complicated, and the processing cost is higher. In addition, when the filter is assembled on site, the two ends of the filter are easy to be reversely assembled, and the filter is required to be reworked and re-disassembled 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, which aim to simplify the processing process and reduce welding spots.
In order to achieve the above object, the electronic expansion valve provided by the invention comprises a valve body, two guide pipes and a plurality of filtering devices, wherein the guide pipes are connected with the valve body, and the guide pipes comprise a guide pipe body; the plurality of filter 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 an embodiment, the opening of the first filter is directed towards the valve body.
In one embodiment, the first filter includes a screen seat and a screen mounted to the screen seat.
In an embodiment, the conduit body has a first end connected with the valve body and a second end opposite to the first end, the filter screen seat is in a ring shape, the filter screen seat is provided with a slot with a notch 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 elliptical shape or a disc shape.
In one embodiment, the mesh number of the filter screen is 80 mesh or more.
In an embodiment, the inner wall of the catheter body is provided with a limit groove for limiting the axial displacement of the first filter along the catheter body.
In an embodiment, the first filter is at least partially located in the limiting groove.
In one embodiment, the conduit body includes a filter section to which the first filter is mounted and an extension section connected to the filter section for connection to a refrigeration system line; and a necking section is connected between the filtering section and the extension section, and the diameter of the necking section is gradually decreased from the filtering section to the extension section.
In an embodiment, the inner wall of the conduit body is provided with a limiting part for limiting the pipeline insertion position 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 the guide pipes comprise guide pipe bodies; the plurality of filter 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 catheter body of the catheter, and the catheter body is connected with the valve body, so that fluid passing through the catheter body is filtered, abnormal sound is reduced, the integrated arrangement of the first filter and the catheter body is realized, on one hand, a filter device is not required to be welded in a pipeline of a refrigerating system, 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 parts connected is reduced, the risk of misloading during on-site installation is reduced, the filter device is prevented from being damaged, and the installation cost is reduced; and the occupied space is saved, the volume of the system is reduced, the miniaturized setting and the user acceptance of the system are facilitated, 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 that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an electronic expansion valve according to an embodiment of the present invention;
FIG. 2 is a schematic view of an embodiment of a catheter according to the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a partial enlarged view at B in FIG. 2;
FIG. 5 is a schematic view of another embodiment of a catheter according to the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at C;
FIG. 7 is a schematic view of another embodiment of an electronic expansion valve according to the present invention;
FIG. 8 is a schematic view of an electronic expansion valve according to another embodiment of the present invention;
FIG. 9 is a partial enlarged view at D in FIG. 8;
FIG. 10 is a schematic view of an electronic expansion valve according to 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 F in fig. 10.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments 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 a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides an electronic expansion valve and refrigeration equipment comprising the same.
Referring to fig. 1 to 3, in the embodiment of the present invention, the electronic expansion valve includes a valve body 20 and a conduit 10, wherein the valve body 20 is connected to the conduit 10. The number of the conduits 10 may be one or a plurality, that is, the valve body 20 may be connected to one conduit 10, and fluid flows from the conduit 10 into the valve body 20 and flows from the conduit 10 out of the valve body 20; the plurality of pipes 10 may be connected, for example, when two pipes 10 are connected, fluid may flow into one pipe 10 and flow out of the other pipe 10. Both conduits 10 may be straight pipes, or both may be curved pipes, or one straight pipe and one curved pipe.
Referring to fig. 1-2, the catheter 10 includes a catheter body 100, the catheter body 100 has a first end 100a and a second end 100b, the first end 100a is configured to be connected to the valve body 20, and the second end 100b is opposite to the first end 100 a. Referring to fig. 1 and 7, the electronic expansion valve further includes a plurality of filtering devices including a first filter 200, the first filter 200 being installed in the catheter body 100, the first filter 200 being used for filtering the fluid passing through the catheter body 100.
Referring to fig. 1-2, the first end 100a of the catheter body 100 may be connected to the valve body 20 to transfer fluid from the catheter body 100 to the valve body 20 or to transfer fluid from the valve body 20 to the catheter body 100. The second end 100b of the catheter body 100 may be connected to a refrigeration system line for fluid transfer.
In order to stabilize the fluid condition in the catheter body 100 and filter foreign matters in the fluid, and prevent clogging of the valve body 20 of the electronic expansion valve 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 catheter body 100 to stabilize the fluid condition, reduce abnormal noise, and filter foreign matters. The first filter 200 may be installed at the position where the pipe body 100 is close to the valve body 10, or may be installed at the position where the pipe body 100 is far from the valve body 10, or may be installed between the first end 100a and the second end 100b, as long as the first filter 200 can filter the passing fluid.
It will be appreciated that the pipe diameter of the pipe body 100 on which the first filter 200 is mounted may be greater than or equal to the pipe diameters of the other portions, and may be specifically set according to the size of the first filter 200. The structure of the first filter 200 is various as long as it can filter the fluid passing through the catheter body 100; the number of the first filters 200 may be one or more. In one embodiment, a plurality of first filters 200 are installed in the catheter body 100 of one catheter, and the plurality of first filters 200 have different mesh numbers and/or mesh shapes to perform multi-stage filtration on the passing fluid so as not to block the valve body 20 of the electronic expansion valve.
Referring to fig. 1 and 5, when the catheter 10 is an elbow, the catheter 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 catheter body 100, and improve the connection stability of the first filter 200 and the catheter body 100.
Since the pipeline of the refrigeration system is usually copper pipe, the material of the conduit body 100 can be copper, and since the material of the conduit body 100 is the same as that of the conduit body 100, the conduit body 100 is easier to connect with the pipeline of the refrigeration system, and the stability of the connection between the conduit body 100 and the pipeline of the refrigeration system is improved. The material of the catheter body 100 may 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 catheter body 100, so that the production cost of the catheter body 100 is reduced, and the connection stability of the catheter body 100 and a 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, 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 that the usage of copper is reduced. Wherein, the valve body 20 can be made of steel, the valve body 20 is welded with the first pipe body 151, and the first pipe body 151 is welded with the second pipe body 151, so as to realize the connection between the valve body 20 and the catheter body 100.
Referring to fig. 1, 2 and 5, the present invention provides an integrated arrangement of the first filter 200 and the catheter body 100 by installing the first filter 200 inside the catheter body 100 of the catheter 10, and communicating the catheter body 100 with the valve body 20, so as to filter the fluid passing through the catheter body 100 and reduce abnormal noise. On one hand, a filter device is not required 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 parts is reduced, the risk of misloading during on-site installation is reduced, the filter device is prevented from being damaged, and the installation cost is reduced. And the occupied space is saved, the volume of the system is reduced, the miniaturized setting and the user acceptance of the system are facilitated, 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 that on one hand, the inner diameter of the catheter body 100 is prevented from being too small, which is not beneficial to 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 the catheter body 100 is prevented from being clogged; on the other hand, the sectional area flow rate of the catheter body 100 is also increased, so that the excessive flow rate of the fluid and the pressure on the catheter body 100 are avoided, 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 the contact area between the first filter 200 and the fluid is increased, the flow area of the fluid is increased, the impurities in the fluid are intercepted by the first filter 200 and stay at the gap between the first filter 200 or the first filter 200 and the conduit body 100, so as to ensure that the electronic expansion valve is not blocked, the fluid condition (such as turbulence and turbulence) is stabilized, and abnormal noise 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 screen holder 210 to the catheter body 100, thereby mounting the first filter 200 within the catheter 10. To improve the stability of the connection between the filter screen 220 and the filter screen holder 210, the filter screen holder 210 may be made of a metal material (such as stainless steel or copper), so that the connection between the filter screen holder 210 and the catheter body 100 is stable and reliable. The filter 220 may be in the shape of a net bag, a cone, an ellipse, or a disk, and the mesh number of the filter 220 is 80 mesh or more, so that the filter is prevented from being blocked by too small a number.
Referring to fig. 3, in an embodiment, the filter base 210 is disposed in an annular shape, the filter base 210 is provided with a slot 211, a notch of the slot 211 faces the second end 100b of the catheter body 100, and an edge of the filter 220 is inserted into the slot 211. The filter base 210 may have a ring structure, and the peripheral edge of the filter 220 is inserted into the slot 211 of the filter base 210 to mount the filter 220 and the filter base 210 together. The inner wall of the slot 211 may be provided with a positioning member protruding into and penetrating through the filter 220, so as to fix the filter 220 and prevent the filter 220 from separating from the filter seat 210. It will be appreciated that the detent may be a protrusion.
In order to position the first filter 200 in the catheter body 100 to 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 the inner wall of the catheter body 100, and the limiting groove 100c is used to limit the displacement of the first filter 200 along 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 acting force direction of the first filter 200 applied by the fluid is in the same straight line with the flowing direction of the fluid, so that the stress of the first filter 200 is uniform, and the positioning of the catheter body 100 on the first filter 200 is stable and firm.
It should be noted that the whole first filter 200 may be located in the limit groove 100c, and the limit 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 located 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 further the movement of the whole first filter 200 is limited. When the first filter 200 includes the filter screen holder 210 and the filter screen 220, the filter screen holder 210 is limited in the limiting groove 100c. The screen holder 210 is restrained by the restraining groove 100c, thereby restraining the movement of the first filter 200.
Referring to fig. 5 to 6, in an embodiment, a first limiting protrusion 101 and a second limiting protrusion 102 are disposed on an inner wall of the catheter body 100 at intervals, and the first limiting protrusion 101 and the second limiting protrusion 102 are disposed along an axial direction of the catheter body 100 at intervals, so that a limiting groove 100c is formed between the first limiting protrusion 101 and the second limiting protrusion 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, the inner diameter of the catheter body 100 at the position of the second limiting protrusion 102 is also reduced, further, the displacement of the first filter 200 in the axial direction of the catheter body 100 is limited, the size of the first filter 200 does not need to be adaptively improved, and the practicability is strong. By providing the first and second stopper protrusions 101 and 102, a stopper groove 100c is formed between the first and second stopper protrusions 101 and 102 to restrict movement of the first filter 200.
With continued reference to fig. 6, in an embodiment, the first limiting protrusion 101 may be a first bump or a first convex ring, and the second limiting protrusion 102 may be a second bump or a second convex ring, and the first filter 200 is limited between the first limiting bump and the second limiting bump by matching the first limiting protrusion 101 with the second limiting protrusion 102. The first filter 200 may be installed by first disposing one of the first limit bump and the second limit bump 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 bump and the second limit bump 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 bump, the first bump may be one or more, and a plurality of first bumps are disposed at intervals along the circumferential direction of the catheter body 100. Likewise, the second convex ring and the second convex point may also be disposed with reference to the first convex ring and the first convex point, which are not described herein.
In contrast to the above embodiment, referring to fig. 2 to 3, in an embodiment, a third limiting protrusion 103 may be disposed on an inner wall surface of the catheter body 100; meanwhile, the catheter body 100 is provided with a diverging section 104, and the diameter of the diverging section 104 gradually increases from the first end 100a of the catheter body 100 to the second end 100b of the catheter body 100, so that the limiting groove 100c is formed between the diverging 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 in the direction of the first end 100a of the catheter body 100. The inner wall of the catheter body 100 may further be provided with a third limiting protrusion 103, where 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 in the direction of the second end 100b, and further limit the displacement of the first filter 200 in the axial direction of the catheter body 100.
It can be appreciated that a fourth limit protrusion may be disposed on the inner wall of the catheter body 100, the catheter body 100 is provided with a tapered section, the pipe 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 limit groove 100c is formed between the tapered section and the fourth limit protrusion. As will be appreciated by those skilled in the art, the structure of the fourth limiting protrusion may be set with reference to the structure of the first limiting protrusion 101, which has the beneficial effects brought by the technical solutions of the corresponding embodiments, and will not be described in detail herein.
To further reduce noise generated due to unstable fluid conditions, referring to fig. 2 and 4, in one embodiment, the conduit body 100 may include a filtering section 110 and an extension section 120, wherein the filtering section 110 is connected to the extension section 120, the first filter 200 is installed in the filtering section 110, filters fluid passing through the filtering section 110, and the extension section 120 is used for connection with a pipeline of a refrigeration system; a necking section 130 is connected between the filtering section 110 and the extension section 120, and the pipe diameter of the necking section 130 gradually decreases from the filtering section 110 to the extension section 120. Referring to fig. 2 and 4, the inner diameter of the filtering section 110 may be greater than 8 mm.
Referring to fig. 4, since the pipe diameter of the necking section 130 decreases from the filtering section 110 to the extension section 120, the pipe diameters of the necking section 130 and the extension section 120 are smaller than the pipe diameter of the filtering section 110, so that the consumption of pipe diameter materials is reduced, the cost is saved, and the influence of the excessive pipe diameter on normal connection with the pipeline of the refrigerating system is avoided; and 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 tube diameter of the second tube 152 may be smaller than the tube diameter of the first tube 151; and/or, the second pipe 152 is provided with a transition section, and the inner diameter of the transition section decreases 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 changes gradually, thereby reducing the impact between the fluid and the wall of the catheter body 100, and reducing noise.
The conduit body 100 may be inserted into a pipeline of a refrigeration system, or the pipeline of the refrigeration system may be inserted into the conduit body 100, so as to position the pipeline of the refrigeration system and avoid the pipeline of the refrigeration system from being inserted too deeply to damage the first filter 200, as shown in fig. 2 and 4, in an embodiment, a limiting portion 131 for limiting the insertion position of the pipeline of the refrigeration system is disposed on the inner wall of the extension section 120. In the process that the pipeline of the refrigeration system stretches into the extension section 120, the limiting part 131 limits the pipeline of the refrigeration system, blocks the pipeline of the refrigeration system from moving into the conduit body 100, and avoids the pipeline of the refrigeration system from being excessively inserted into the conduit body 100, so that the pipeline of the refrigeration system is poked into the first filter 200 in the extension section 120, the first filter 200 is protected, the assembly work of the conduit body 100 and the pipeline of the refrigeration system is facilitated, and the working efficiency is improved.
With continued reference to fig. 2 and 4, in one embodiment, the length of the extension 120 is greater than or equal to 10 millimeters. By defining the length of the extension 120 to be no less than 10 millimeters, on the one hand, the extension 120 is prevented from being too short in length, which is detrimental to the connection of the catheter body 100 to the refrigeration system; on the other hand, the limiting portion 131 provided in the extension portion 120 prevents the pipe of the refrigeration system from being inserted too deeply into the pipe body 100, and damages the first filter 200.
The first filter 200 has various structures, and in one embodiment, referring to fig. 8, the first filter 200 is arranged in a disc shape. The first filter 200 may be installed at one end of the duct body 100 near the valve body 20, or at a position between both ends of the duct body 100. With continued reference to fig. 8, the conduit body 100 has an abutment section 180, and the pipe diameter of the abutment 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 abutment section 180. When fluid flows into the valve body 20 from the end of the conduit body 100 away from the valve body 20, the pipe diameter of the abutting section 180 decreases from the end away from the valve body 20 to the end close to the valve body 20, so that the movement of the first filter 200 in the direction of the valve body 20 is limited, and the first filter 200 is limited.
Referring to fig. 8, the abutment section 180 may be disposed near one end of the valve body 20, and when the catheter body 100 is inserted into the valve body 20 of the electronic expansion valve, the abutment section 180 abuts against the outer wall of the valve body 20 to limit the catheter body 100 from moving into the valve body 20, so as to position the catheter body 100; meanwhile, since the upper and lower sides of the portion of the pipe body 100 close to the abutment section 180 are limited by the valve body 20, the pipe diameter of the portion of the pipe body 100 close to the abutment section 180 is prevented from being greatly 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 mounted on the valve housing 21, the conduit body 100 is connected to the valve seat 22, and an end of the first filter 200 near 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 catheter body 100 and extends into the catheter body 100, and the valve core seat 22 abuts against the first filter 200, so as to limit the movement of the first filter 200 in the direction of the valve body 20, and limit the first filter 200. It will be appreciated that the catheter body 100 may be connected to the valve housing 21 and that the catheter body 100 may be a straight tube.
In order to limit the movement of the first filter 200 away from the valve body 20, referring to fig. 8 and 9, in an embodiment, the conduit body 100 is provided with a necking section 160, and the pipe 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 toward the second end 100 b. In this manner, the displacement of the first filter 200 in the axial direction of the catheter body 100 is restricted by the engagement of the necked-down section 160 with the valve cartridge seat 22, thereby restricting the first filter 200 within the catheter body 100.
In contrast to the above embodiment, referring to fig. 10 and 11, in one embodiment, a fifth limiting protrusion 105 is disposed on the inner wall of the conduit body 100, and the fifth limiting protrusion 105 cooperates with the valve core seat 22 to form a limiting groove 100c between the necking segment 160 and the valve core seat 22 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 in communication with the valve body 20, wherein the second conduit 12 is the conduit 10. The second conduit 12 may be an elbow, and 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 connection with the second conduit 12, thereby positioning the first filter 200. It may be that the catheter body 100 has an interference connection section 170, and an outer wall of the interference connection section 170 is penetrated in 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 side and the lower side of the interference connection section 170 are limited by the valve housing 21, the pipe diameter of the interference connection section 170 is not easy to be greatly deformed, and the stability of interference fit between the first filter 200 and the interference connection section 170 is ensured.
The electronic expansion valve may further include a drive assembly and a valve needle assembly both mounted within the valve body 20, the drive assembly being coupled to the valve needle assembly to drive movement of the valve needle assembly and to regulate the opening of the valve to rapidly control the flow of fluid through the valve body 20.
In one embodiment, the valve housing 21 has a valve cavity therein, and the plurality of filtering devices may further include a second filter mounted in the valve cavity to filter the fluid entering the valve cavity. The second filter may be disposed around the valve needle assembly or may cover the fluid inlet of the valve housing 21.
The invention also provides a refrigeration device, which comprises an electronic expansion valve, and the specific structure of the electronic expansion valve refers to the embodiment, and because the refrigeration device adopts all the technical schemes of all the embodiments, the refrigeration device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein. The refrigeration device may be an air conditioner, a refrigerator, a freezer, a fan with a refrigeration function, or the like.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (16)
1. An electronic expansion valve, comprising:
a valve body;
two conduits connected to the valve body, the conduits including a conduit body having opposite first and second ends, the first end for connection to the valve body; the catheter body is made of copper; and
the filter device comprises a first filter, wherein the first filter is installed in the catheter body and comprises a filter screen seat and a filter screen installed in the filter screen seat, and the first filter is used for filtering fluid passing through the catheter body.
2. The electronic expansion valve of claim 1, wherein said screen holder is annularly disposed, said screen holder has a slot with a slot opening toward said second end, said screen being inserted into said slot.
3. The electronic expansion valve of claim 2, wherein said screen is conical.
4. The electronic expansion valve of claim 3, wherein a gap is provided between said screen and an inner wall surface of said conduit body.
5. The electronic expansion valve of claim 4, wherein the gap increases from the first end to the second end.
6. The electronic expansion valve of claim 5, wherein an end of said screen remote from said screen seat is convexly configured from said first end to said second end to form a convex arc surface.
7. The electronic expansion valve of claim 1, wherein the two conduits include at least one elbow, the conduit body of the elbow including a bend and a connection, the first filter being mounted in the connection, an end of the bend remote from the connection being adapted to connect with the valve body.
8. The electronic expansion valve of claim 1, wherein the conduit body comprises a first tube body for connection with the valve body and a second tube body connected with the first tube body for connection with a line of a refrigeration system, the first tube body being welded with the second tube body.
9. The electronic expansion valve of claim 8, wherein the tube diameter of the second tube is smaller than the tube diameter of the first tube.
10. The electronic expansion valve of claim 8, wherein said second tube has a transition section with an inner diameter that decreases from said first end to said second end.
11. The electronic expansion valve of claim 1, wherein the conduit body has an inner diameter of 8 millimeters or greater.
12. The electronic expansion valve of claim 1, wherein the opening of the first filter is oriented toward the valve body.
13. The electronic expansion valve of claim 1, wherein an inner wall of the conduit body is provided with a limit groove that limits axial displacement of the first filter along the conduit body.
14. The electronic expansion valve of claim 13, wherein the first filter is at least partially positioned within the limiting groove.
15. The electronic expansion valve of claim 1, wherein the conduit body comprises a filter section and an extension section connected to the filter section, the first filter being mounted to the filter section, the extension section for connection to a line of a refrigeration system; and a necking section is connected between the filtering section and the extension section, and the diameter of the necking section is gradually decreased from the filtering section to the extension section.
16. A refrigeration device comprising an electronic expansion valve according to any one of claims 1 to 15.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310442835.1A CN116499145A (en) | 2021-05-07 | 2021-05-07 | Electronic expansion valve and refrigeration equipment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310442835.1A CN116499145A (en) | 2021-05-07 | 2021-05-07 | Electronic expansion valve and refrigeration equipment |
| 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 |
|---|---|---|---|
| CN202110498035.2A Division CN113203227A (en) | 2021-05-07 | 2021-05-07 | Electronic expansion valve and refrigeration equipment |
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| CN116499145A true CN116499145A (en) | 2023-07-28 |
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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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| Application Number | Title | Priority Date | Filing Date |
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| CN202110498035.2A Pending CN113203227A (en) | 2021-05-07 | 2021-05-07 | Electronic expansion valve and refrigeration equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4997161B2 (en) * | 2008-03-31 | 2012-08-08 | Ｊｘ日鉱日石エネルギー株式会社 | 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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2021
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