CN206694632U - A kind of electric expansion valve of flow control accuracy - Google Patents
A kind of electric expansion valve of flow control accuracy Download PDFInfo
- Publication number
- CN206694632U CN206694632U CN201720157410.6U CN201720157410U CN206694632U CN 206694632 U CN206694632 U CN 206694632U CN 201720157410 U CN201720157410 U CN 201720157410U CN 206694632 U CN206694632 U CN 206694632U
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- wall
- valve
- groove
- flow control
- control accuracy
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Abstract
The utility model discloses a kind of electric expansion valve of flow control accuracy, including valve seat and valve rod, the groove of up/down perforation is formed on the valve seat, the bearing block that insertion matches in the groove, the bearing block includes pedestal, the through hole run through is formed in the pedestal, the through hole matches with the valve rod, and internal thread segment is formed in the middle part of the through-hole wall；The straight tube that welding matches in the bottom of the groove, the lateral aperture communicated with the groove is provided with the valve seat outer wall, the bend pipe that the lateral aperture welding matches, a disrance sleeve is welded on the outer wall of the valve seat, magnet rotor is provided with outside the valve rod upper end, it is characterised in that：The second annular groove and rectangle valve port are formed on the outer wall of the pedestal lower port；The utility model can solve the problem that the shortcomings of the prior art, can not only eliminate valve rod by lateral pressure caused by gas, and be improved flow control accuracy, be easy to system to control to adjust, while reduce cost, to meet the needs of in the market.
Description
Technical field
It the utility model is related to a kind of electric expansion valve of flow control accuracy.
Background technology
At present, electric expansion valve both domestic and external is various in style, and architectural feature is each different, but their throttle structure is all
It is similar, mainly cone valve structure.Because this cone valve structure, to the discharge characteristic of electric expansion valve, its linearity is to pay no attention to
Think, i.e., in the case of condition certain (pressure difference is certain), flow is not proportional relation to aperture, but is closed into curve
System, close to conic section.This discharge characteristic into conic section is unfavorable for the accurate control of flow, because for changing phase
With the aperture of quantity, the change of flow simultaneously differs, so the difficulty of control is very big, can not be to the accurate control of flow.Base
In this, want to improve the discharge characteristic of numerical control flux, must just break through the inherent shortcoming of cone valve structure, electric expansion valve is carried out
Innovation, utility model one kind more reasonably throttle structure.Rational throttle structure can inherently change the stream of numerical control flux
Control characteristic is measured, so as to improve the performance of numerical control flux, control is met system requirements, reaches not only accurate but also energy-conservation effect.
Utility model content
The purpose of this utility model be to provide for it is a kind of can solve the problem that the weak point that is referred in above-mentioned background technology and
The device of flow control accuracy on the electric expansion valve of technical problem.
To achieve these goals, the utility model adopts the following technical scheme that：
A kind of electric expansion valve of flow control accuracy, including valve seat and valve rod, up/down perforation is formed on the valve seat
Groove, the bearing block that insertion matches in the groove, the bearing block includes pedestal, and leading to of running through is formed in the pedestal
Hole, the through hole match with the valve rod, and internal thread segment is formed in the middle part of the through-hole wall；Welded in the bottom of the groove
The straight tube of matching, is provided with the lateral aperture communicated with the groove on the valve seat outer wall, and the lateral aperture welding matches curved
Pipe, a disrance sleeve is welded on the outer wall of the valve seat, magnet rotor is provided with outside the valve rod upper end, it is characterised in that：
The second annular groove and rectangle valve port are formed on the outer wall of the pedestal lower port.
Further setting is done to the utility model, the quantity of the rectangle valve port can be 2, either 4 or 6
It is individual, and valve port is symmetrical two-by-two.
Further setting is done to the utility model, material is PEEK or brass used by the bearing block.
Further setting is done to the utility model, the outer wall of the bearing block is provided with coaxial mounted spacing quiet spring,
The helicla flute of the spacing quiet spring embeds limited location and moves spring；The resistance spring end of the magnet rotor and a transverse direction of the spacing dynamic spring
Cylinder is mutually touched, and positioning hole groove is provided with the upper port outer wall of the bearing block, and the positioning hole groove is used to fix the limit
The traverse furrow of the quiet spring in position.
Further setting is done to the utility model, the valve rod includes the body of rod, is formed on the outer wall in the middle part of the body of rod
The external thread section to match with the internal thread segment, the middle lower end of the body of rod form interior axial hole post, under the interior axial hole post
The first annular groove is formed on the outer wall in portion, forms what is communicated with the interior axial hole post on the outer wall of the interior axial hole post bottom
First horizontal hole post, the second horizontal axis hole communicated with the through hole is formed in the middle part of the wall body of the bearing block.
Further setting is done to the utility model, the second horizontal axis hole is 2, and symmetrical two-by-two.
Further setting is done to the utility model, first annular groove is 2, is arranged at intervals in upper and lower.
Further setting is done to the utility model, circular groove is formed on the pedestal lower port inwall, is provided with the circular groove
Sealing ring, material is PTFE or PEEK used by the sealing ring.
Further setting is done to the utility model, the middle-end outer wall of the pedestal is provided with fixing groove.
Further setting is done to the utility model, the upper end outer wall of the pedestal is provided with the positioning hole of spacing quiet spring.
Compared with the prior art, the utility model has following beneficial effect：
The raising of the utility model flow of electronic expansion valve control accuracy, particular by two the first annular grooves on valve rod
With the second annular groove on bearing block, when being passed through gas, the second annular groove gassy, two symmetrical valve ports are further flowed into
(valve port quantity can be 2,4 or 6, and they are symmetrical two-by-two) so that valve rod will not downward shift or left and right
Skew.
The utility model is further advanced by two the first annular grooves so that two the first annular groove surrounding constant pressures, it is therefore prevented that valve
When bar is by air pressure, the pressure of a tendency is produced.With the increase of valve opening pulse step number, the flow of gas is consequently increased,
Its linear state of rating curve.
From the foregoing, it will be observed that the utility model can solve the problem that the shortcomings of the prior art, can not only eliminate valve rod by
To lateral pressure caused by gas, and be improved flow control accuracy, be easy to system to control to adjust, at the same reduce into
This, to meet the needs of in the market.
Brief description of the drawings
The utility model is elaborated with reference to the accompanying drawings and detailed description：
Fig. 1 is the structural representation of the flow control accuracy device on the utility model electric expansion valve.
Fig. 2 is the structural representation of valve body in the utility model.
Fig. 3 is the profile in A-A directions in Fig. 2.
Fig. 4 is the structural representation of the utility model bottom bracket.
Fig. 5 is the profile in B-B directions in Fig. 4.
Fig. 6 is the structural representation of valve rod in the utility model.
Fig. 7 is the profile in C-C directions in Fig. 6.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, a kind of electric expansion valve of flow control accuracy, including valve seat 1 and valve
Bar 3, the groove 11 of up/down perforation is formed on the valve seat 1, the bearing block 2 to match, the bearing are inserted in the groove 11
Seat 3 includes pedestal 23, the through hole 21 run through is formed in the pedestal 23, the through hole 21 matches with the valve rod 3, described
Internal thread segment 24 is formed in the middle part of the inwall of through hole 21；The straight tube 5 that welding matches in the bottom of the groove 11, outside the valve seat 1
Wall is provided with the lateral aperture communicated with the groove 11, the bend pipe 4 that the lateral aperture welding matches, in the outer wall of the valve seat 1
One disrance sleeve 10 of upper welding, is provided with magnet rotor 6 outside the upper end of valve rod 3, it is characterised in that：In the lower end of pedestal 23
The second annular groove 27 and rectangle valve port 26 are formed on the outer wall of mouth.The utility model is by way of riveting by bearing block 2
Fixing groove 29 is fixed together with the notch on the groove 11 of valve seat 1, and the fixing groove 29 is located in the middle part of the outer wall of bearing block 2, in addition
Valve rod 3 and bearing block 2, between matched when mounted by internal thread segment 24 and external thread section 35, progress screw thread rotation between the two
Turn that certain regulation can be carried out.
Valve rod 3 described in the utility model includes the body of rod 31, and the middle lower end of the body of rod 31 forms interior axial hole post 32, institute
State and form the first annular groove 34 on the outer wall of the interior lower end of axial hole post 32, on the outer wall of the interior axial bottom of hole post 32 formed with
The first horizontal hole post 33 that the interior axial hole post 32 communicates, formed and the through hole 21 in the middle part of the wall body of the bearing block 2
The the second horizontal axis hole 22 communicated.
First horizontal hole post 33 described in the utility model is 2, on the same line, the second horizontal axis hole
22 be 2, on the same line, and first annular groove 34 is 2.
Circular groove 25 is formed on the lower port inwall of pedestal 23 described in the utility model, in the outer wall of the lower port of pedestal 23
The second annular groove 27 of upper formation and rectangle valve port 26, a pair or two couples or three are could be arranged in the rectangle valve port quantity
It is right, and they are symmetrical；Sealing ring 9 is provided with the circular groove 25, can select as PEEK in the material of the sealing ring or
PTFE；The upper end outer wall of the pedestal 23 is provided with positioning hole 28, and the positioning hole 28 is used to assemble spacing quiet spring 7.
The helicla flute in spacing quiet spring 7 described in the utility model embeds limited location and moves spring 8, in the spacing dynamic spring 8
Under electric expansion valve full off state, positioned at the lower limit site of spacing quiet spring 7.The resistance spring end of the magnet rotor 6 with it is described spacing
One horizontal cylinder of dynamic spring is in contact.The upper end of the outer wall of valve rod 3 is arranged in the magnet rotor 6.The quilt of disrance sleeve 10
It is welded on the outer wall of valve seat 1.
A kind of flow control accuracy device of electric expansion valve described in the utility model is mainly by bearing block 2
First annular groove 34 of the second annular groove 27 and valve rod 3 improves flow control accuracy so that its linear shape of rating curve
State.It is described as follows：When being passed through gas in electric expansion valve air inlet pipe, the gassy of the second annular groove 27, further flow
Enter two symmetrical valve ports 26, wherein valve port quantity can be 2,4 or 6, and they are symmetrical two-by-two so that valve
Bar 3 will not downward shift or left and right skew.It is further advanced by two the first annular grooves 34 so that two surroundings of the first annular groove 34 are permanent
Pressure, it is therefore prevented that when valve rod 3 is by air pressure, produce the pressure of a tendency.With the increase of valve opening pulse step number, the flow of gas
It is consequently increased, its linear state of rating curve.
For above-described embodiment simply to illustrate that technical concepts and features of the present utility model, the purpose is to be to allow this area
Interior those of ordinary skill can understand content of the present utility model and implement according to this, can not be limited with this of the present utility model
Protection domain.Every equivalent change or modification according to made by the essence of the utility model content, it should all cover in this reality
With in new protection domain.
Claims (10)
1. a kind of electric expansion valve of flow control accuracy, including valve seat and valve rod, up/down perforation is formed on the valve seat
Groove, the bearing block that the interior insertion of the groove matches, the bearing block include pedestal, are formed in the pedestal and run through logical
Hole, the through hole match with the valve rod, and internal thread segment is formed in the middle part of the through-hole wall；Welded in the bottom of the groove
The straight tube of matching, is provided with the lateral aperture communicated with the groove on the valve seat outer wall, and the lateral aperture welding matches curved
Pipe, a disrance sleeve is welded on the outer wall of the valve seat, magnet rotor is provided with outside the valve rod upper end, it is characterised in that：
The second annular groove and rectangle valve port are formed on the outer wall of the pedestal lower port.
A kind of 2. electric expansion valve of flow control accuracy according to claim 1, it is characterised in that：The rectangle valve port
Quantity be 2, either 4 or 6, and valve port is symmetrical two-by-two.
A kind of 3. electric expansion valve of flow control accuracy according to claim 1, it is characterised in that：The bearing block is adopted
Material is PEEK or brass.
A kind of 4. electric expansion valve of flow control accuracy according to claim 1, it is characterised in that：Outside the bearing block
Wall is provided with coaxial mounted spacing quiet spring, and embedding limited location in the helicla flute of the spacing quiet spring moves spring；The magnet rotor
Resistance spring end is mutually touched with a horizontal cylinder of the spacing dynamic spring, and positioning hole is provided with the upper port outer wall of the bearing block
Groove, the positioning hole groove are used for the traverse furrow for fixing the spacing quiet spring.
A kind of 5. electric expansion valve of flow control accuracy according to claim 1, it is characterised in that：The valve rod includes bar
Body, the external thread section to match with the internal thread segment, the middle lower end shape of the body of rod are formed on the outer wall in the middle part of the body of rod
Into interior axial hole post, the first annular groove is formed on the outer wall of the interior axial hole post bottom, in the outer of the interior axial hole post bottom
The the first horizontal hole post communicated with the interior axial hole post is formed on wall, is formed in the middle part of the wall body of the bearing block and led to described
The second horizontal axis hole that hole communicates.
A kind of 6. electric expansion valve of flow control accuracy according to claim 5, it is characterised in that：Second lateral shaft
Hole is 2.
A kind of 7. electric expansion valve of flow control accuracy according to claim 5, it is characterised in that：First annular groove is
2, it is arranged at intervals in upper and lower.
A kind of 8. electric expansion valve of flow control accuracy according to claim 1, it is characterised in that：The pedestal lower port
Circular groove is formed on inwall, is provided with sealing ring in the circular groove, material is PTFE or PEEK used by the sealing ring.
A kind of 9. electric expansion valve of flow control accuracy according to claim 1, it is characterised in that：The middle-end of the pedestal
Outer wall is provided with fixing groove.
A kind of 10. electric expansion valve of flow control accuracy according to claim 1, it is characterised in that：The pedestal it is upper
Outer wall is held to be provided with the positioning hole of spacing quiet spring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720036691X | 2017-01-12 | ||
| CN201720036691 | 2017-01-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206694632U true CN206694632U (en) | 2017-12-01 |
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ID=60438311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720157410.6U Active CN206694632U (en) | 2017-01-12 | 2017-02-22 | A kind of electric expansion valve of flow control accuracy |
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| CN (1) | CN206694632U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678421A (en) * | 2017-01-12 | 2017-05-17 | 诸暨市亿霸电子阀门有限公司 | Electronic expansion valve with precision controlled through flow |
| WO2022142607A1 (en) * | 2020-12-28 | 2022-07-07 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and air conditioning device |
-
2017
- 2017-02-22 CN CN201720157410.6U patent/CN206694632U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678421A (en) * | 2017-01-12 | 2017-05-17 | 诸暨市亿霸电子阀门有限公司 | Electronic expansion valve with precision controlled through flow |
| CN106678421B (en) * | 2017-01-12 | 2024-02-02 | 诸暨市亿霸电子阀门有限公司 | Electronic expansion valve with flow control precision |
| WO2022142607A1 (en) * | 2020-12-28 | 2022-07-07 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and air conditioning device |
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