CN207111959U - A kind of electric expansion valve - Google Patents
A kind of electric expansion valve Download PDFInfo
- Publication number
- CN207111959U CN207111959U CN201720367474.9U CN201720367474U CN207111959U CN 207111959 U CN207111959 U CN 207111959U CN 201720367474 U CN201720367474 U CN 201720367474U CN 207111959 U CN207111959 U CN 207111959U
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- valve
- bearing block
- electric expansion
- spring
- groove
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Abstract
Valve arrangement field is the utility model is related to, in particular to a kind of electric expansion valve；It includes valve part, the valve part includes valve seat, straight tube and bend pipe, bearing block is provided with the valve seat, match valve rod on the bearing block, the groove of up/down perforation is formed on the valve seat, the bearing block that insertion matches in the groove, valve rod is provided with the bearing block, 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；The utility model can not only realize electric expansion valve No leakage under full off state, while reduce production cost.
Description
Technical field
Valve arrangement field is the utility model is related to, in particular to a kind of electric expansion valve.
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 the valve opening point location of this cone valve structure sets (fully closed no flow) so that electronics
Needle inside expansion valve is in contact with following valve opening, and valve rod starts to produce an axial compressive force to needle.Work as electronic expansion
Valve is under full off state, and caused axial compressive force reaches maximum to valve rod between each other with needle, because needle is fully closed
When under state, remain static, the spring of stem internal is compressed spring by the downward pressure of valve rod；Work as spring
Decrement to certain degree when, pressure that needle is subject to reaches maximum；At the same time, the spring of stem internal produces to valve rod
A raw elastic force (i.e. needle is to reverse axial compressive force caused by valve rod), now, between valve rod external screw thread and valve body internal thread
Frictional force becomes big.When air inlet pipe is passed through gases at high pressure, and when electric expansion valve descends in off position, needle seals valve opening,
Now the high pressure of valve opening upper end is more than the low pressure of lower end, forms a positive differential pressure so that gases at high pressure generate one to needle
Individual axial compressive force.Therefore, the generation of axial compressive force, cause inside electric expansion valve between valve rod external screw thread and valve body internal thread
Frictional force becomes big, more likely because driving force caused by stepper motor is less than reaction torque, causes electric expansion valve clamping stagnation.
Needle and valve opening below in this cone valve structure, there is certain gap.Due to depositing for these gaps
Quantity of gas leakage is being caused to increase.Therefore, the gap of this cone valve structure is reduced, it is necessary to improve between needle and valve opening
Matching degree.Matching degree is improved, it is necessary to greatly improve the processing precise degree of equipment, that is, needs to put into high cost.
Therefore, breaking through the valve opening location device and sealing device of this cone valve structure, while to reduce part processing
Cost, two kinds of devices of electric expansion valve are improved, a kind of knot of more rational electric expansion valve of utility model
Structure.
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 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, including valve part, the valve part includes valve seat, straight tube and bend pipe, in the valve
Seat is provided with bearing block, and match valve rod on the bearing block, the groove of formation up/down perforation on the valve seat, in the groove
The bearing block to match is inserted, valve rod is provided with the bearing block, the straight tube that welding matches in the bottom of the groove, described
Valve seat outer wall is provided with the lateral aperture communicated with the groove, the bend pipe that the lateral aperture welding matches, in the outer of the valve seat
A disrance sleeve is welded on wall, magnet rotor is provided with outside the valve rod upper end.
Further setting is done to the utility model, the valve seat upper surface is provided with a locating notch, in the locating notch
For positioning quiet spring fixed plate, an endoporus is provided with the quiet spring fixed plate, in its described endoporus size and the external diameter of bearing block
Size is identical, and is installed in valve seat upper surface, coaxial with bearing block.
Do further setting to the utility model, the valve rod includes the body of rod, the axial direction that the interior formation of the body of rod runs through
Hole post, two annular grooves are formed on the outer wall of the axial hole post bottom, the top of the axial hole post is provided with a spring eye.
Further setting is done to the utility model, the bearing block includes pedestal, is formed in the pedestal and runs through logical
Hole, the through hole match with the valve rod, a horizontal hole post are provided with the middle and upper part of the through hole, on the through-hole wall
Portion forms an internal thread segment, and an axle card collar groove is formed in the middle part of the pedestal outer wall.
Further setting is done to the utility model, circular groove is formed on the pedestal lower port inwall, in the pedestal lower end
Mouthful outer wall be provided with rectangle valve port, can be 2, either 4 or 6 in the quantity of the rectangle valve port, and valve
Mouth is symmetrical two-by-two, is provided with seal washer in the circular groove, material is PTFE or PEEK used by the seal washer.
Further setting is done to the utility model, the middle-end outer wall of the pedestal is provided with fixing groove, in the fixing groove
Mutually riveted with the valve seat.
Do further setting to the utility model, the middle part of the valve seat be provided with one with it is rectangular on the bearing block
The highly equal annular trough of shape valve port.
Further setting is done to the utility model, coaxial mounted spacing quiet spring is provided with the outer wall of the bearing block,
It is fixed in the spacing quiet spring on the fixing hole of the quiet spring fixed plate, limited location is embedded in the helicla flute of the spacing quiet spring
Dynamic spring.
Further setting is done to the utility model, in the spacing quiet spring there is upper position-arresting portion, lower position-arresting portion and spiral to lead
To portion, upper position-arresting portion is located at the upper end in spirally-guided portion, and lower position-arresting portion is located at the lower end in spirally-guided portion, in described and lower position-arresting
The positioning handle that portion is connected is embedded on the fixing hole of the quiet spring fixed plate.
Further setting is done to the utility model, the quiet spring fixed plate has 36 teeth and 36 tooth sizes are identical, point
Cloth is uniform, has a fixing hole in the quiet spring fixed plate, the plane and phase of the end face of the fixing hole perpendicular to quiet spring fixed plate
Even.
Further setting is done to the utility model, is provided with magnet rotor inside the bearing block, the magnet rotor is by modeling magnetic material
Material and rotor embedding axle composition, in being internally formed for the embedding axle of the rotor and the valve rod external diameter size identical axis hole, described
The external thread section to match with the internal thread segment on the bearing block is formed on the outer wall of axis hole.
Do further setting to the utility model, the top of the embedding axle of rotor is provided with an axle sleeve, the axle sleeve it is interior
Portion forms one and valve rod external diameter identical sets of holes, and the axle sleeve and the valve rod are coaxial, and the upper surface of the axle sleeve and institute
The upper surface for stating valve rod maintains an equal level.
Further setting is done to the utility model, the spring eye of the valve rod is embedded with valve rod stage clip.
Further setting is done to the utility model, the top of the embedding axle of rotor is provided with a spring press-cover, the spring
The middle and lower part of gland forms first slotted eye bigger than the axle sleeve external diameter, and the middle part of the spring press-cover forms one and institute
Valve rod stage clip external diameter size the second slotted eye of identical is stated, the 3rd slotted eye is formed at the top of the spring press-cover.
Do further setting to the utility model, the axle card collar groove on the bearing block, for being embedded in axle collar,
The axle collar, it is therefore intended that prevent the quiet spring fixed plate from moving up and down.
Further setting is done to the utility model, when the afterbody of the spacing dynamic spring be located at the lower position-arresting portion of spacing quiet spring and
When having determined that the closing point and electric expansion valve No leakage of electric expansion valve, the spacing dynamic spring dials handle and the magnet rotor
Limit rib be in contact, while by specified frock, the quiet spring corresponding with above the valve seat locating notch is fixed
One tooth of plate is withheld.
Further setting is done to the utility model, the setting of the closing point of the electric expansion valve, is by the valve rod
Bottom mutually touched with the seal washer, then by magnet rotor reverse 90 °~135 °.
Further setting is done to the utility model, the electronic expansion valve sealing means, being will by the valve rod stage clip
The valve rod is pressed on the seal washer.
Compared with the prior art, the utility model has following beneficial effect：
Electronic expansion valve sealing means,, will by valve rod stage clip specifically when stem bottom is mutually touched with seal washer
Valve rod is pressed on seal washer so that electric expansion valve when closed, reduces leakage rate.
The valve opening location device of electric expansion valve, specifically when stem bottom is mutually touched with seal washer, then by magnetic
Rotor reverses 90 °~135 ° so that valve opening pulse (note in the range of 32 ± 20：1 pulse=4.5 °).
From the foregoing, it will be observed that the utility model can solve the problem that the shortcomings of the prior art, it can not only realize that electronics is swollen
Swollen valve No leakage under full off state, while reduce cost.
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 utility model electric expansion valve upper sealing device and valve opening location device.
Fig. 2 is the structural representation of valve part 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 and the profile in B-B directions.
Fig. 5 is the structural representation of quiet spring fixed plate in the utility model.
Fig. 6 is the structural representation of spacing quiet spring in the utility model.
Fig. 7 is the structural representation of spacing dynamic spring in the utility model.
Fig. 8 is the structural representation of the utility model bottom bracket and the profile in C-C directions.
Fig. 9 is the structural representation of magnet rotor and the profile in D-D directions in the utility model.
Figure 10 is the structural representation of the utility model bottom bracket axle.
Figure 11 is the structural representation of spring press-cover and the profile in E-E directions in the utility model.
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, including valve part 1, the valve part
Including valve seat 101, straight tube 102 and bend pipe 103, bearing block 2 is provided with the valve seat 101, match valve rod on the bearing block 2
9, the groove 1011 of up/down perforation is formed on the valve seat 101, the bearing block 2 to match is inserted in the groove 1011, in institute
State in bearing block 2 and be provided with valve rod 9, the straight tube 102 that welding matches in the bottom of the groove 1011, in the outer wall of valve seat 101
It is provided with the lateral aperture communicated with the groove 1011, the bend pipe 103 that the lateral aperture welding matches, in the valve seat 101
A disrance sleeve 13 is welded on outer wall, magnet rotor 8 is provided with outside the upper end of valve rod 9.
The upper surface of valve seat 101 described in the utility model is provided with a locating notch 1013, is used in the locating notch 1013
In positioning quiet spring fixed plate 4, an endoporus 401 is provided with the quiet spring fixed plate 4, in its described size of endoporus 401 and bearing block 2
External diameter size it is identical, and be installed in the upper surface of valve seat 101, it is coaxial with the bearing block 2.
Bearing block 2 described in the utility model includes pedestal 201, and the through hole 202 run through is formed in the pedestal 201,
The through hole 202 matches with the valve rod 9, and a horizontal hole post 203 is provided with the middle and upper part of the through hole 202, described logical
The upper inside wall of hole 202 forms an internal thread segment 204, and an axle card collar groove 205 is formed in the middle part of the outer wall of pedestal 201,
In the axle with a fixing groove 206 is provided with below collar 7, the fixing groove 206 rivets with the phase of valve seat 101.
Circular groove 208 is formed on the lower port inwall of pedestal 201 described in the utility model, in the lower port of pedestal 201
Outer wall is provided with rectangle valve port 207, can be 2, either 4 or 6 in the quantity of the rectangle valve port 207, and
Valve port is symmetrical two-by-two, is provided with seal washer 3 in the circular groove 208, used by the seal washer 3 material be PTFE or
PEEK。
The quiet spring fixed plate 4 described in the utility model has 36 teeth 402 and 36 sizes of tooth 402 are identical, distribution
Uniformly, there is fixing hole 403 in the quiet spring fixed plate 4, the end face 404 of the fixing hole 403 is perpendicular to quiet spring fixed plate 4
Plane 405 and be connected.
Coaxial mounted spacing quiet spring 5 is provided with the utility model on the outer wall of the bearing block 2, described spacing quiet
Spring 5 is fixed on the fixing hole 403 of the quiet spring fixed plate, and embedding limited location in the helicla flute of the spacing quiet spring 5 moves spring 6.
Spacing quiet spring 5 described in the utility model has upper position-arresting portion 501, lower position-arresting portion 502 and spirally-guided portion 503,
Upper position-arresting portion 501 is located at the upper end in spirally-guided portion 503, and lower position-arresting portion 502 is located at the lower end in spirally-guided portion 503, described
The positioning handle 504 being connected with lower position-arresting portion 502 is embedded on the fixing hole 403 of the quiet spring fixed plate 4.
Valve rod 9 described in the utility model includes the body of rod 901, the axial hole post that the interior formation of the body of rod 901 runs through
902,2 annular grooves 903 are formed on the outer wall of the axial bottom of hole post 902, the top of the axial hole post 902 is provided with a spring
Hole 904.
The middle part of valve seat 101 described in the utility model is provided with one and the rectangle valve port 207 on the bearing block 2
Highly equal annular trough 1012.
Magnet rotor 8 is provided with inside bearing block 2 described in the utility model, the magnet rotor 8 is by modeling magnetic material 801 and rotor
Embedding axle 802 forms, in being internally formed for the embedding axle 802 of the rotor and the external diameter size identical axis hole 8021 of valve rod 9, in institute
State the external thread section 8022 for being formed on the outer wall of axis hole 8021 and being matched with the internal thread segment 204 on the bearing block 2.
The top of the embedding axle 802 of rotor described in the utility model is provided with an axle sleeve 11, and the axle sleeve 11 is internally formed
One and the external diameter identical sets of holes 1101 of valve rod 9, the axle sleeve 11 and the valve rod 9 are coaxial, and the upper surface of the axle sleeve 11
Maintain an equal level with the upper surface of the valve rod 9, while both are linked together by way of welding.
The spring eye 904 of valve rod 9 described in the utility model is embedded with valve rod stage clip 10.
The top of the embedding axle 802 of rotor described in the utility model is provided with a spring press-cover 12, the spring press-cover 12
Middle and lower part forms first slotted eye 1201 bigger than the external diameter of axle sleeve 11, the middle part of the spring press-cover 12 formed one with
3rd slotted eye is formed at second slotted eye of external diameter size identical 1202 of valve rod stage clip 10, the top of the spring press-cover 12
1203。
Axle card collar groove 205 on bearing block 2 described in the utility model, for being embedded in axle collar 7, used in the axle
Collar 7, it is therefore intended that prevent the quiet spring fixed plate 4 from moving up and down.
A kind of electric expansion valve in the utility model, when the afterbody of the spacing dynamic spring 6 is located at the lower position-arresting of spacing quiet spring 5
Portion 502 and the closing point and electric expansion valve No leakage or when somewhat revealing for having determined that electric expansion valve, it is described spacing
The handle 601 of dialling of dynamic spring 6 is in contact with the limit rib 8011 of the magnet rotor 8, while by specified frock, will be with the valve seat
One tooth 402 of the 101 corresponding quiet spring fixed plate 4 in the top of locating notch 1013 is withheld.
A kind of sealing device of electric expansion valve in the utility model：The valve rod 9 is pressed by the valve rod stage clip 10
On the seal washer 3.
The valve opening location device of a kind of electric expansion valve in the utility model：By the bottom of the valve rod 9 with it is described
The phase of seal washer 3 is touched, then magnet rotor 8 is reversed into 90 °~135 °, and now, the position is confirmed to be closing point.
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, including valve part, the valve part includes valve seat, straight tube and bend pipe, in the valve seat
Bearing block is provided with, match valve rod on the bearing block, and the groove of up/down perforation, the groove interpolation are formed on the valve seat
Enter the bearing block of matching, valve rod is provided with the bearing block, the straight tube that welding matches in the bottom of the groove, in the valve
Seat outer wall is provided with the lateral aperture communicated with the groove, the bend pipe that the lateral aperture welding matches, in the outer wall of the valve seat
One disrance sleeve of upper welding, is provided with magnet rotor outside the valve rod upper end.
A kind of 2. electric expansion valve according to claim 1, it is characterised in that：The valve seat upper surface is provided with a locating slot
Mouthful, it is used to position quiet spring fixed plate in the locating notch, an endoporus is provided with the quiet spring fixed plate, it is big in its described endoporus
It is small identical with the external diameter size of bearing block, and valve seat upper surface is installed in, the middle part of the valve seat coaxial with the bearing block
It is provided with an annular trough highly equal with the rectangle valve port on the bearing block.
A kind of 3. electric expansion valve according to claim 1, it is characterised in that：The valve rod includes the body of rod, the body of rod
It is interior to form the axial hole post run through, 2 annular grooves are formed on the outer wall of the axial hole post bottom, the top of the axial hole post is set
There is a spring eye.
A kind of 4. electric expansion valve according to claim 3, it is characterised in that：The spring eye of the valve rod is embedded with valve rod pressure
Spring.
5. a kind of electric expansion valve according to claim 1, the bearing block includes pedestal, is formed and run through in the pedestal
Through hole, the through hole and the valve rod match, and a horizontal hole post is provided with the middle and upper part of the through hole, in the through hole
One internal thread segment is formed at wall top, and an axle card collar groove is formed in the middle part of the pedestal outer wall, in the outer of the bearing block
Wall is provided with coaxial mounted spacing quiet spring, is fixed in the spacing quiet spring on the fixing hole of the quiet spring fixed plate, in institute
The helicla flute for stating spacing quiet spring embeds the dynamic spring of limited location.
A kind of 6. electric expansion valve according to claim 5, it is characterised in that：Circle is formed on the pedestal lower port inwall
Groove, rectangle valve port is provided with the outer wall of the pedestal lower port, the quantity of the rectangle valve port be 2,4 or
6, and valve port is symmetrical two-by-two, is provided with seal washer in the circular groove, used by the seal washer material be PTFE or
PEEK, the middle-end outer wall of the pedestal are provided with fixing groove, mutually riveted in the fixing groove and the valve seat.
7. according to a kind of electric expansion valve of claim 5 or 6, it is characterised in that：Magnet rotor is provided with inside the bearing block,
The magnet rotor is made up of modeling magnetic material and the embedding axle of rotor, in being internally formed and the valve rod external diameter size for the embedding axle of the rotor
Identical axis hole, the external thread section to match with the internal thread segment on the bearing block is formed on the outer wall of the axis hole；
The spacing quiet spring has upper position-arresting portion, lower position-arresting portion and spirally-guided portion, and upper position-arresting portion is located at the upper of spirally-guided portion
End, lower position-arresting portion is located at the lower end in spirally-guided portion, the quiet spring is embedded in the positioning handle being connected with lower position-arresting portion
On the fixing hole of fixed plate.
A kind of 8. electric expansion valve according to claim 7, it is characterised in that：The quiet spring fixed plate has 36 teeth and 36
Individual tooth size is identical, is evenly distributed, and has fixing hole in the quiet spring fixed plate, the end face of the fixing hole is consolidated perpendicular to quiet spring
The plane of fixed board and be connected；
The top of the embedding axle of rotor is provided with an axle sleeve, and the axle sleeve is internally formed one and valve rod external diameter identical set
Hole, the axle sleeve and the valve rod are coaxial, and the upper surface of the axle sleeve and the upper surface of the valve rod maintain an equal level；
The top of the embedding axle of rotor is provided with a spring press-cover, and the middle and lower part of the spring press-cover forms one than the axle sleeve
The first big slotted eye of external diameter, the middle part of the spring press-cover form one and valve rod stage clip external diameter size second groove of identical
3rd slotted eye is formed at hole, the top of the spring press-cover.
A kind of 9. electric expansion valve according to claim 8, it is characterised in that：Axle card collar groove on the bearing block, use
In embedded axle collar, in the axle collar, it is therefore intended that prevent the quiet spring fixed plate from moving up and down.
A kind of 10. electric expansion valve according to claim 9, it is characterised in that：When the afterbody of the spacing dynamic spring is positioned at limit
The lower position-arresting portion of the quiet spring in position and when having determined that the closing point and electric expansion valve No leakage of electric expansion valve, the spacing dynamic spring
Handle of dialling be in contact with the limit rib of the magnet rotor, will be with valve seat locating notch top while by specified frock
One tooth of the corresponding quiet spring fixed plate is withheld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720367474.9U CN207111959U (en) | 2017-04-10 | 2017-04-10 | A kind of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720367474.9U CN207111959U (en) | 2017-04-10 | 2017-04-10 | A kind of electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207111959U true CN207111959U (en) | 2018-03-16 |
Family
ID=61595882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720367474.9U Active CN207111959U (en) | 2017-04-10 | 2017-04-10 | A kind of electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207111959U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327579A (en) * | 2017-04-10 | 2017-11-07 | 诸暨市亿霸电子阀门有限公司 | A kind of electric expansion valve |
-
2017
- 2017-04-10 CN CN201720367474.9U patent/CN207111959U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327579A (en) * | 2017-04-10 | 2017-11-07 | 诸暨市亿霸电子阀门有限公司 | A kind of electric expansion valve |
| CN107327579B (en) * | 2017-04-10 | 2024-03-29 | 诸暨市亿霸电子阀门有限公司 | Electronic expansion valve |
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