CN110230706B - Execution assembly of electronic expansion valve - Google Patents
Execution assembly of electronic expansion valve Download PDFInfo
- Publication number
- CN110230706B CN110230706B CN201910617486.6A CN201910617486A CN110230706B CN 110230706 B CN110230706 B CN 110230706B CN 201910617486 A CN201910617486 A CN 201910617486A CN 110230706 B CN110230706 B CN 110230706B
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- sleeve
- screw
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- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 238000002955 isolation Methods 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000003466 welding Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 description 12
- 230000001174 ascending effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
- F16H25/2209—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with arrangements for taking up backlash
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses an execution assembly of an electronic expansion valve, which comprises a valve seat, wherein a flange plate is arranged above the valve seat, and the upper part of the flange plate is connected with an isolation sleeve; the execution assembly further comprises a valve column, a guide sleeve is arranged on the valve seat through the valve column, and the guide sleeve is embedded into the valve seat through a middle hole of the flange plate; the execution assembly comprises an inner magnetic ring, and the inner magnetic ring is sleeved into the valve column through a middle hole on the inner magnetic ring; the execution assembly comprises a rolling screw rod, wherein the rolling screw rod is embedded into a first column hole on the valve column, and the rolling screw rod is fixed in the isolation sleeve. The execution assembly has the characteristics of low cost, high flow control precision and small friction resistance.
Description
Technical Field
The invention relates to an execution assembly of an electronic expansion valve, in particular to an execution assembly with high flow control precision and small friction resistance.
Background
Electronic expansion valves are an important component in refrigeration/heating systems, mainly for regulating the flow of fluids. The structure of the actuating components adopted by the electronic expansion valves in the market at present is basically the same, and the actuating components are all of threaded screw structures. Because a certain clearance is needed between the thread and the screw, otherwise, the electronic expansion valve is blocked because the thread screw is free from clearance. At the same time, due to the axial clearance between the threaded screws, the actuating assembly can jump up and down, further resulting in an unstable flow of fluid.
Second, since the screw thread screw mechanism is not smooth in the surface of the screw thread screw during rotation, friction between the screw thread screws increases during rotation. If the surface gloss of the threaded screw is to be improved, it is necessary to put into a precision processing apparatus, which leads to an increase in processing cost.
Disclosure of Invention
The invention aims to provide an execution assembly of an electronic expansion valve, in particular to an execution assembly with high flow control precision and small friction resistance.
In order to achieve the above purpose, the invention adopts the following technical scheme: an execution assembly of an electronic expansion valve comprises a valve seat, wherein a flange plate is arranged above the valve seat, and the upper part of the flange plate is connected with an isolation sleeve; the execution assembly further comprises a valve column, a guide sleeve is arranged on the valve seat through the valve column, and the guide sleeve is embedded into the valve seat through a middle hole of the flange plate; the execution assembly comprises an inner magnetic ring, and the inner magnetic ring is sleeved into the valve column through a middle hole on the inner magnetic ring; the execution assembly comprises a rolling screw rod, wherein the rolling screw rod is embedded into a first column hole on the valve column, and the rolling screw rod is fixed in the isolation sleeve.
The invention is further provided with the flange plate, the upper end surface of the flange plate is provided with a disc, and the upper end surface of the disc forms a step circle matched with the isolation sleeve.
The invention is further provided with the annular through groove, the flange step matched with the disc is arranged above the annular through groove, and the circular groove matched with the outer diameter of the guide sleeve is arranged below the annular through groove.
The invention is further provided with a guide hole which is matched with the valve column and penetrates through the guide sleeve from top to bottom, and the outer wall of the upper part of the guide hole is provided with a step matched with the middle hole of the flange plate; the lower part of the guide sleeve is provided with a sealing groove matched with the valve ring, and the lower part of the guide hole is axially connected with the sealing groove; the guide sleeve is provided with a square valve port from the outer wall to the inner wall, and the square valve port is laterally connected with the lower part of the guide hole and the sealing groove; the number of the square valve ports is 1-6 pairs, and the square valve ports are uniformly distributed; the valve ring is internally provided with a hole smaller than the guide hole by 0.05-0.1 mm, and the valve ring is made of metal or high polymer compound with high temperature resistance, corrosion resistance and small creep quantity.
The valve is further provided with a second column hole axially arranged in the valve column, the second column hole is axially connected with the first column hole, the second column hole is arranged below the first column hole, and the inner hole of the second column hole is smaller than the first column hole; the lower part of the second column hole forms lateral ring grooves, the number of the lateral ring grooves is less than 6 (including 6), and the upper part of the second column hole forms a pair, or two pairs, or three pairs, or four pairs of second lateral side holes; a positioning step column matched with the inner magnetic ring is formed above the second transverse side hole, and the height of the positioning step column is the same as that of the first column hole or higher than that of the first column hole; the upper part of the positioning step column is provided with a pair of first transverse side holes; the first column hole and the second column hole are vertically communicated, the first column hole is communicated with the first transverse side hole, and the second column hole is communicated with the second transverse side hole.
The invention is further provided with the inner magnetic ring middle hole is a through hole, and the inner magnetic ring is sleeved into the positioning step column through the inner magnetic ring middle hole; the upper surface of the middle hole of the inner magnetic ring is provided with a screw sleeve groove matched with the outer diameter and the height of the screw sleeve, and the lower surface of the middle hole of the inner magnetic ring is provided with a guide groove which is bigger than the outer diameter of the valve column.
The invention is further arranged such that the roll screw is provided with a helical groove which is embedded in a first column bore in the spool.
The invention is further provided with the spiral groove tangential to a pair of the small steel balls; a screw handle is also arranged above the spiral groove.
According to the invention, a welding hole matched with the screw handle is formed above the isolation sleeve, the position of the screw handle is higher than that of the welding hole, the screw handle and the welding hole are fixed together, and the screw handle and the welding hole are not leaked.
The invention is further provided with the screw sleeve closely matched with the positioning step column, and the inner wall of the screw sleeve is tangent to the pair of small steel balls.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an execution assembly with high flow control precision and small friction resistance, which not only solves the problem of flow control precision, but also reduces friction resistance and greatly reduces processing cost.
The spiral groove in the rolling screw rod in the valve column is tangent to the small steel ball, and the inner wall of the screw sleeve is tangent to the small steel ball, so that on one hand, no gap exists between the rolling screw rod and the small steel ball, and the phenomenon of negligence and small fluid flow cannot occur in the process of rotating and ascending or descending the rolling screw rod; on one hand, the inside of the screw sleeve is in point-to-surface contact with the small steel balls, so that the friction resistance is greatly reduced; in the last aspect, the rolling screw and the screw sleeve do not need to be processed by equipment with high precision, and the small steel balls are current and mature products and do not need to be processed again, so that the cost is greatly reduced.
The invention passes through the lateral annular groove at the lower part of the valve column, and the purpose of the lateral annular groove is as follows: when the valve column is subjected to inclined fluid pressure, the pressure around the lateral annular groove is equal, so that the valve column is prevented from being deflected to any side, and the phenomenon that the fluid flow is prevented from being negligibly changed is also ensured.
Wherein, the invention also passes through the square valve ports at the lower part of the guide sleeve, the square valve ports are symmetrical and are uniformly distributed on the guide sleeve, when fluid enters the square valve port at the same time or flows out of the square valve port at the same time, the valve column cannot deviate to one side, and the control precision of the fluid flow is further ensured.
Drawings
The invention will be further described with reference to the accompanying drawings:
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a schematic view of a valve seat according to the present invention;
FIG. 3 is a schematic view of a flange in accordance with the present invention;
FIG. 4 is a schematic view of an isolation sleeve according to the present invention;
FIG. 5 is a schematic view of a guide sleeve according to the present invention;
FIG. 6 is a cross-sectional view of the guide sleeve of the present invention, shown in section as A-A;
FIG. 7 is a schematic illustration B of a spool in accordance with the present invention;
FIG. 8 is a cross-sectional view B-B of a spool in accordance with the present invention;
FIG. 9 is a schematic diagram of an inner magnetic ring according to the present invention;
FIG. 10 is a schematic view of a rolling screw according to the present invention.
The specific embodiment is as follows:
the technical scheme of the invention is further specifically described by the following examples.
As shown in fig. 1, the executing assembly of the electronic expansion valve comprises a valve seat 1, a flange plate 2, an isolation sleeve 3, a valve ring 4, a guide sleeve 5, a valve column 6, an inner magnetic ring 7, a screw sleeve 8, a small steel ball 9 and a rolling screw 10.
In the invention, a flange plate 2 is arranged above a valve seat 1, and the flange plate 2 and the valve seat 1 are connected together in a welding mode; the valve column 6 is arranged on the guide sleeve 5 on the valve seat 1 through the valve column 6, and the guide sleeve 5 is embedded into the valve seat 1 through the middle hole 201 of the flange plate 2; the inner magnetic ring 7 is sleeved into the valve column 6 through a middle hole 702 on the inner magnetic ring 7; the flange plate 2 is connected with the isolation sleeve 3 in a welding mode; the rolling screw 10 is inserted into a first column hole 601 in the valve column 6, and the rolling screw 10 is fixed in the isolation sleeve 3.
Further description will be made by the execution assembly of the electronic expansion valve.
Preferably, as shown in fig. 3 and 4, the flange 2 is provided with a disc 202, and a step circle 203 matched with the isolation sleeve 3 is formed on the upper end surface of the disc 202, and the purpose of the step circle 203 is to position the isolation sleeve 3 so that the isolation sleeve 3 is connected with the flange 2.
Preferably, as shown in fig. 3 and 4, the valve seat 1 is provided with an annular through groove 101, a flange step 102 matched with the disc 202 is arranged above the annular through groove 101, and the flange plate 2 is embedded into the flange step through the disc 202, so that the flange plate and the disc are connected together in a welding mode.
Preferably, as shown in fig. 2 and 5, a circular groove 103 matched with the outer diameter of the guide sleeve 5 is arranged below the annular through groove 101.
Preferably, as shown in fig. 5 and 6, a guide hole 501 is formed inside the guide sleeve 5, and is matched with the valve column 6, and is penetrated up and down, and a step 502 matched with the hole 201 in the flange 2 is formed on the outer wall of the upper part of the guide hole 501; a sealing groove 503 matched with the valve ring 4 is arranged at the lower part of the guide sleeve 5, and the lower part of the guide hole 501 is axially connected with the sealing groove 503; the guide sleeve 5 is provided with a square valve port 504 from the outer wall to the inner wall, and the square valve port 504 is laterally connected with the lower part of the guide hole 501 and the sealing groove 503; the number of the square valve ports 504 is 1-6 pairs, and the square valve ports are uniformly distributed; holes smaller than the guide holes 501 by 0.05-0.1 mm are formed in the valve ring 4, and the valve ring 4 is made of metal or high polymer compound with high temperature resistance, corrosion resistance and small creep amount. The guide sleeve 5 is fixed in the valve seat 1 by the circular groove 103 and the middle hole 201 of the flange 2.
Preferably, as shown in fig. 7 and 8, a second post hole 602 is axially provided inside the valve post 6, the second post hole 602 is axially connected with the first post hole 601, the second post hole 602 is below the first post hole 601, and the inner hole of the second post hole 602 is smaller than the first post hole 601; the lower part of the second cylinder hole 602 forms lateral ring grooves 606, the number of the lateral ring grooves 606 is less than 6 (including 6), and the upper part of the second cylinder hole 602 forms one pair, or two pairs, or three pairs, or four pairs of second lateral side holes 605; a positioning step post 604 matched with the inner magnetic ring 7 is formed above the second lateral side hole 605, and the height of the positioning step post 604 is the same as that of the first post hole 601 or higher than that of the first post hole 601; at least one pair of first transverse side holes 603 are arranged at the upper part of the positioning step column 604; the first column hole 601 and the second column hole 602 are vertically penetrated, the first column hole 601 and the first lateral side hole 603 are communicated, and the second column hole 602 and the second lateral side hole 605 are communicated.
Preferably, as shown in fig. 1 and 9, the inner magnetic ring middle hole 702 is a through hole, and the inner magnetic ring 7 is sleeved into the positioning step column 604 through the inner magnetic ring middle hole 702; a threaded sleeve groove 701 with the outer diameter of the threaded sleeve 8 is formed in the upper surface of the inner magnetic ring middle hole 702, a guide groove 703 with the outer diameter larger than that of the valve column 6 is formed below the inner magnetic ring middle hole 702, the inner magnetic ring 7 is fixed on the valve column 6 through the threaded sleeve 8, and the second transverse side hole 605 in the valve column 6 is communicated with the isolation sleeve 3 through the guide groove 703.
Preferably, the roll screw 10 shown in fig. 10 is provided with a helical groove 1002, said helical groove 1002 being embedded in the first stem bore 601 on the spool 6.
Preferably, the spiral groove 1002 is tangential to the pair of small steel balls 9, and a spiral handle 1001 is further arranged above the spiral groove 1002.
Preferably, a welding hole 301 is formed above the isolation sleeve 3 to match the screw shank 1001, the screw shank 1001 and the welding hole 301 are fixed together, and the screw shank 1001 and the welding hole 301 are not externally leaked.
Preferably, the screw sleeve 8 is tightly matched with the positioning step column 604, and the inner wall of the screw sleeve 8 is tangential to the pair of small steel balls 9.
The electronic expansion valve actuating assembly described in the present invention has the advantages that the electronic expansion valve actuating assembly is further described by the above description of the electronic expansion valve actuating assembly:
the spiral groove 1002 in the rolling screw rod 10 in the valve column 9 is tangential to the small steel ball 9, and the inner wall of the screw sleeve 8 is tangential to the small steel ball 9, so that on one hand, no gap exists between the rolling screw rod 10 and the small steel ball 9, and the phenomenon of negligence of fluid flow cannot occur in the process of rotating and ascending or descending the rolling screw rod 10; on the one hand, the inside of the screw sleeve 8 is in point-to-surface contact with the small steel balls 9, so that the friction resistance is greatly reduced; on the last hand, the rolling screw 10 and the screw sleeve 8 do not need to be processed by equipment with high precision, the small steel balls 9 are current and mature products, and the rolling screw and the screw sleeve do not need to be processed again, so that the cost is greatly reduced.
Wherein, the invention passes through the lateral annular groove 606 at the lower part of the valve column 6, and the purpose of the lateral annular groove 606 is as follows: when the spool 6 is affected by the pressure of the fluid, the pressure around the lateral ring groove 606 is equal, so that the spool 6 is prevented from being biased to any side, and the fluid flow is prevented from being negligent. Meanwhile, the peripheral pressure of the lateral ring groove 606 is equal, so that the valve column 6 is not affected by the lateral pressure, and the valve column is further reduced
The invention also passes through the square valve port at the lower part of the guide sleeve 5, the square valve port 504 is symmetrical, the square valve ports 504 are uniformly distributed on the guide sleeve 5, and when fluid enters the square valve port 504 at the same time or flows out of the square valve port 504 at the same time, the valve column 6 can not deviate to one side, so that the control precision of the fluid flow is further ensured.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to those skilled in the art to understand the content of the present invention and accordingly implement the present invention without limiting the scope of the present invention. All equivalent changes or modifications made in accordance with the essence of the present invention should be included in the scope of the present invention.
Claims (8)
1. The execution assembly of the electronic expansion valve is characterized by comprising a valve column, an inner magnetic ring, a rolling screw, small steel balls and a screw sleeve, wherein the valve column, the inner magnetic ring, the rolling screw, the small steel balls and the screw sleeve are matched with the guide sleeve, the inner magnetic ring is fixed on the valve column through the screw sleeve, the rolling screw is embedded in a first column hole on the valve column, the rolling screw is fixed in an isolation sleeve, the small steel balls tangential to the rolling screw and the inner wall of the screw sleeve are embedded in a first transverse side hole on the valve column, and the guide sleeve is fixed on a valve seat of the electronic expansion valve;
a second column hole is axially formed in the valve column, the second column hole is axially connected with the first column hole, the second column hole is arranged below the first column hole, and the inner hole of the second column hole is smaller than the first column hole; the lower part of the second column hole forms lateral ring grooves, the number of the lateral ring grooves is less than 6, and the upper part of the second column hole forms at least one pair of second lateral side holes; a positioning step column matched with the middle hole of the inner magnetic ring is formed above the second transverse side hole; the upper part of the positioning step column is provided with at least one pair of first transverse side holes; the first column hole and the second column hole are communicated up and down, the first column hole and the first transverse side hole are communicated, and the second column hole and the second transverse side hole are communicated;
the rolling screw is provided with a spiral groove tangential to the small steel ball, and the spiral groove is embedded into a first column hole on the valve column.
2. The electronic expansion valve actuator assembly of claim 1, wherein: a flange plate is arranged above the valve seat, and the upper part of the flange plate is connected with the isolation sleeve; the guide sleeve is embedded into the valve seat through a middle hole of the flange, the flange is provided with a disc, and the upper end surface of the disc forms a step circle matched with the isolation sleeve.
3. The electronic expansion valve actuator assembly of claim 2, wherein: the valve seat is provided with an annular through groove, a flange step matched with the disc is arranged above the annular through groove, and a circular groove matched with the outer diameter of the guide sleeve is arranged below the annular through groove.
4. An actuator assembly for an electronic expansion valve as set forth in claim 3 wherein: a guide hole which is matched with the valve column and penetrates through the guide sleeve from top to bottom is formed in the guide sleeve, and a step which is matched with the middle hole of the flange plate is formed on the outer wall of the upper part of the guide hole; the lower part of the guide sleeve is provided with a sealing groove matched with the valve ring, and the lower part of the guide hole is axially connected with the sealing groove; the guide sleeve is provided with a square valve port from the outer wall to the inner wall, and the square valve port is laterally connected with the lower part of the guide hole and the sealing groove.
5. The actuator assembly of claim 4, wherein: the inner magnetic ring middle hole is a through hole, and the inner magnetic ring is sleeved into the positioning step column through the inner magnetic ring middle hole; the upper surface of the middle hole of the inner magnetic ring is provided with a screw sleeve groove matched with the outer diameter and the height of the screw sleeve, and the lower surface of the middle hole of the inner magnetic ring is provided with a guide groove which is bigger than the outer diameter of the valve column.
6. The electronic expansion valve actuator assembly of claim 5, wherein: the spiral groove is tangential to the pair of small steel balls, and a screw handle is arranged above the spiral groove.
7. The electronic expansion valve actuator assembly of claim 6, wherein: and a welding hole matched with the screw handle is formed above the isolation sleeve, the screw handle and the welding hole are fixed together, and the screw handle and the welding hole are not externally leaked.
8. The electronic expansion valve actuator assembly of claim 6, wherein: the screw sleeve is tightly matched with the positioning step column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617486.6A CN110230706B (en) | 2019-07-10 | 2019-07-10 | Execution assembly of electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617486.6A CN110230706B (en) | 2019-07-10 | 2019-07-10 | Execution assembly of electronic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110230706A CN110230706A (en) | 2019-09-13 |
| CN110230706B true CN110230706B (en) | 2024-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910617486.6A Active CN110230706B (en) | 2019-07-10 | 2019-07-10 | Execution assembly of electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110230706B (en) |
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|---|---|---|---|---|
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| US6802488B1 (en) * | 2002-08-30 | 2004-10-12 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Electro-mechanical coaxial valve |
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| CN107035870A (en) * | 2017-04-26 | 2017-08-11 | 成都大学 | A kind of feed screw nut drive-type DC stop valve |
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| CN110230706A (en) | 2019-09-13 |
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