CN104696558B - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN104696558B CN104696558B CN201310651916.9A CN201310651916A CN104696558B CN 104696558 B CN104696558 B CN 104696558B CN 201310651916 A CN201310651916 A CN 201310651916A CN 104696558 B CN104696558 B CN 104696558B
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- China
- Prior art keywords
- expansion valve
- electric expansion
- needle
- mandrel
- valve
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to an electronic expansion valve, comprising: a valve assembly; the actuating mechanism comprises a mandrel and is used for driving the movable valve component to axially move; a drive mechanism for powering the actuator; and an electromagnetic holding mechanism including a moving iron and adapted to hold and release the actuator, the spindle being capable of driving the movable valve member to perform an axial movement so as to adjust a valve opening of the electronic expansion valve when the electromagnetic holding mechanism holds the actuator in a power-on condition, the movable valve member being moved to a position at which the electronic expansion valve is closed when the electromagnetic holding mechanism releases the actuator in a power-off condition, wherein the spindle is screw-coupled with the moving iron so that the spindle is rotatable relative to the moving iron, and the electronic expansion valve is provided with a rotation prevention structure so that the moving iron is only capable of a translational movement in an axial direction of the electronic expansion valve and is not capable of a rotational movement. According to the invention, the power-off self-protection function of the electronic expansion valve is realized in a more reliable and effective manner.
Description
Technical field
The present invention relates to a kind of electric expansion valve.
Background technology
Electric expansion valve is the important component in cooling/heating system, is mainly used for the flow progress to refrigerant fluid
Adjust.Traditional electric expansion valve is generally controlled using stepper motor, and usually by driving mechanism（Stepper motor）, hold
Row mechanism（Thread screw mechanism）, throttle mechanism（Needle valve seat）And relevant auxiliary body is formed.
In the art, there is the feature integration voluntarily closed after dexterously solenoid valve is powered off by Design of Mechanical Structure
In electric expansion valve so as to fulfill electric expansion valve automatic cut-off protection protective function demand, and exist conform to electronic expansion
The automatic cut-off protection protective function of valve and develop new reliable and effective thread screw mechanism（Screw thread pair connects）Demand.
Here, it is noted that the technology contents provided in this part are intended to contribute to those skilled in the art couple
The understanding of the present invention, and not necessarily form the prior art.
The content of the invention
There is provided total summary of the present invention in this part, rather than complete scope of the present invention or all features of the invention is complete
Face discloses.
One purpose of one or more embodiments of the present invention is to provide one kind and dexterously passes through Design of Mechanical Structure
And the feature integration voluntarily closed after solenoid valve is powered off in electric expansion valve so as to fulfill the automatic cut-off protection of electric expansion valve
The electric expansion valve of protective function.
The another object of one or more embodiments of the present invention is to provide one kind can be to avoid because of rotor and mandrel mistake
Screw thread pair caused by degree rotation kills the electric expansion valve with wear problem.
The another object of one or more embodiments of the present invention is to provide a kind of on the one hand dynamic after accident power-off
Iron, which departs from, determine to enable in the case of iron iron reliably and smoothly to recover to determining the state that ferromagnetism is attracted and the opposing party
Face can also ensure that mandrel is axially moved together with needle to realize the reliably electric expansion valve with stable threshold switch process.
The another object of one or more embodiments of the present invention, which is to provide one kind, can reduce by screw connection structure
Operation and may caused by needle connection parts and then needle occur rocking risk, it is possible thereby to realize relatively reliable peace
The electric expansion valve of steady threshold switch process.
The another object of one or more embodiments of the present invention is to provide one kind can be to avoid using bearing and bearing
The parts such as limiting component and cause complicatedization and can also exempt due to move iron be possible to follow mandrel rotation and
Cause to determine the electric expansion valve for occurring the situation of improper abrasion between iron and dynamic iron relative to iron rotation is determined.
The another object of one or more embodiments of the present invention is to provide one kind with relatively reliable and effective manner
Realize the electric expansion valve of the automatic cut-off protection protective function of electric expansion valve.
One or more of to achieve these goals, according to the present invention, there is provided a kind of electric expansion valve, including：Valve
Component, the valve module includes movable valve member and the flow for the fluid to flowing through the electric expansion valve is adjusted
Section；Executing agency, the executing agency include mandrel and for driving the movable valve member to be axially moved；Driving machine
Structure, the driving mechanism are used to provide power for the executing agency；And electromagnetism holding mechanism, the electromagnetism holding mechanism bag
Iron is included and suitable for keeping by electromagnetic attraction and discharging the executing agency, when the electromagnetism holding mechanism is in energization feelings
When keeping the executing agency under condition, it is described to adjust that the mandrel can drive the movable valve member to be axially moved
The valve opening of electric expansion valve, it is described movable when the electromagnetism holding mechanism discharges the executing agency under powering-off state
Valve member is moved to the position for make it that the electric expansion valve is closed, wherein, the mandrel is threadedly coupled with the dynamic iron so that
The mandrel can be rotated relative to the dynamic iron, also, the electric expansion valve is provided with anti-rotational structure so that described dynamic
Iron is merely able to be unable to be rotated along the axial direction progress translational motion of the electric expansion valve.
One or more embodiment according to the present invention, after dexterously solenoid valve is powered off by Design of Mechanical Structure
The feature integration voluntarily closed is in electric expansion valve so as to fulfill the automatic cut-off protection protective function of electric expansion valve.Especially, with
The scheme of power-off protection function is realized by the way of directly series connection independent electrical magnet valve（In this scenario, it is contemplated that pressure drop, solely
The passage section of vertical solenoid valve is usually larger so as to which cost is very high）Compare, it is possible to achieve overall compact structure and higher can
By property, terminal device business can be made to save twice field brazing technique, and cost can be greatly reduced.In addition, with electricity
In sub- expansion valve control panel increase realize the super capacitor of energy storage be powered in finite time after a loss of power so as to
Realize valve close scheme compare, must can be matched to avoid valve with specific controller, super capacitor cost is very high,
Controller is to working environment than more sensitive relevant issues.In addition, with electronic expansion valve controls plate install reserve battery with
It can continue to perform the scheme that valve is closed after a loss of power and compare, periodic replacement battery and not environmentally can be avoided the need for（Plumbic acid
Storage battery has harmful effect to environment）Relevant issues.
One or more embodiment according to the present invention, due to being provided with stop mechanism, can suitably limit
The rotation of mandrel.Thus, such as in the standard-sized sheet and full close position of valve, can draw to avoid because of rotor and mandrel excessively rotation
The screw thread pair risen is killed and wear problem, so as to ensure the smooth transmission of screw thread pair.
One or more embodiment according to the present invention, due in rotation inhibiting member（Housing）Set between dynamic iron anti-
Rotational structure and it is threaded connection structure between iron and mandrel dynamic, therefore on the one hand moves iron after accident power-off and depart from
Determine to enable iron reliably and smoothly recover to the state with determining ferromagnetism actuation in the case of iron, and on the other hand also can
Enough ensure that mandrel is axially moved together with needle to realize reliable and stable threshold switch process.Particularly, according to the present invention
Embodiment, due to being threaded connection structure between iron and mandrel dynamic, with being set between mandrel and needle connection parts
The scheme for putting screw connection structure is compared, and can make screw connection structure further from the valve needle terminal end for being used for realization valve closing（Under
End）, so as to reduce as the operation of screw connection structure and may caused by needle connection parts and then needle rock
Risk, it is possible thereby to realize relatively reliable and stable threshold switch process.
One or more embodiment according to the present invention, due in rotation inhibiting member（Housing）Set between dynamic iron anti-
Rotational structure and connection structure is threaded between iron and mandrel dynamic, passes through bearing between dynamic iron and mandrel and bearing limits
Position component etc. is compared come the scheme connected, can cause complicated to avoid using the parts such as bearing and bearing limiting component
Change, and can also exempt since dynamic iron is possible to follow the rotation of mandrel and causes to determine iron and dynamic iron relative to determining iron to rotate
Between there is the situation of improper abrasion.
Especially, one or more embodiments according to the present invention, electronics is realized with relatively reliable and effective manner
The automatic cut-off protection protective function of expansion valve.
Brief description of the drawings
By description referring to the drawings, the feature and advantage of one or more embodiments of the invention will become more
Add and be readily appreciated that, in the accompanying drawings：
Fig. 1 is the longitudinal section of electric expansion valve according to the embodiment of the present invention；
Fig. 2 is the view sub-anatomy of electric expansion valve according to the embodiment of the present invention；
Fig. 3 is the exploded perspective view of electric expansion valve according to the embodiment of the present invention；
Fig. 4 A are to show dynamic iron and mandrel and the sectional view of the matching relationship of housing along what the plane A-A in Fig. 1 was intercepted；
Fig. 4 B are the stereograms for showing dynamic iron according to the embodiment of the present invention；
Fig. 5 A are the sectional views for the anti-rotational structure for showing the first modified example according to the embodiment of the present invention；
Fig. 5 B be show the first modified example according to the embodiment of the present invention the dynamic iron with anti-rotational structure it is vertical
Body figure；
Fig. 6 A are the sectional views for the anti-rotational structure for showing the second modified example according to the embodiment of the present invention；
Fig. 6 B are the dynamic iron and set with anti-rotational structure for showing the second modified example according to the embodiment of the present invention
The stereogram of cylinder；
Fig. 7 A are the sectional views for the anti-rotational structure for showing the 3rd modified example according to the embodiment of the present invention；
Fig. 7 B are the dynamic iron and set with anti-rotational structure for showing the 3rd modified example according to the embodiment of the present invention
The stereogram of cylinder；And
Fig. 8 A, Fig. 8 B, Fig. 8 C and Fig. 8 D are the courses of work for showing electric expansion valve according to the embodiment of the present invention
A series of figures
Embodiment
With reference to the accompanying drawings, by illustrative embodiments, the present invention will be described in detail.To the following detailed of the present invention
Thin description is definitely not to the present invention and its application or the limitation of purposes merely for the sake of demonstration purpose.
First, by the overall structure of the electric expansion valve referring to figs. 1 to Fig. 3 descriptions according to the embodiment of the present invention.Its
In, Fig. 1 is the longitudinal section of electric expansion valve according to the embodiment of the present invention, and Fig. 2 is according to the embodiment of the present invention
Electric expansion valve view sub-anatomy, and Fig. 3 is the exploded perspective view of electric expansion valve according to the embodiment of the present invention.
Electric expansion valve 1 according to the embodiment of the present invention can include：For the fluid to flowing through electric expansion valve 1
The valve module 10 that is adjusted of flow；For driving the movable valve member of valve module 10（Needle）The execution being axially moved
Mechanism 50；The driving mechanism 40 of power is provided for executing agency 50；And the electromagnetism for keeping and discharging executing agency 50 is protected
Hold mechanism 60.
In preferable example, valve module 10 includes valve body 12.The entrance being connected with inflow pipe 92 is set in valve body 12
The 12-1 and outlet 12-2 being connected with outflow tube 94.Fluid via inflow pipe 92 flow into electric expansion valve 1, then via go out stream
Pipe 94 flows out electric expansion valve 1.
In some instances, fixed valve member has been integrally formed at it in the outlet 12-2 of valve body 12（Valve seat）12-3.
In preferable example, as mentioned above, the valve module 10 of electric expansion valve 1 further includes needle 14.Moreover, such as
Mentioned above, needle 14 is axially moved under the drive of executing agency 50（Such as axial fortune is carried out while rotating
It is dynamic）, so as to open and close valve seat 12-3（The valve opening being specially formed in valve seat 12-3）And electronics can be adjusted
The valve opening of expansion valve 1.Needle 14 can include first end（Upper end）14-1 and second end（Lower end）14-2.First end 14-1 is used
In with hereafter by the Part II for the needle connection parts being described（Lower part/needle connection part）Connection.Second end 14-2 is used
In being engaged with valve seat 12-3 so as to closing valve seat 12-3.
In the example shown in the series of figures, needle 14 is with can（It is axial）Sliding type is attached to the Part II of needle connection parts 55
55-2.Specifically, formed with the receiving hole 55-21 being open downward in Part II 55-2.Can in receiving hole 55-21
Spring is compressed to set（As the according to the present invention first compression spring）38, and receiving hole 55-21 is also a housing for needle
14 first end 14-1 enables first end 14-1 to be slided in receiving hole 55-21 in a manner of guided.In receiving hole 55-
Annular groove can be set at the inner wall surface of 21 lower end（Do not indicate）, which, which can be used for accommodating, will hereafter be described
Baffle ring.Needle 14 can be formed as first end 14-1 outside diameter be more than second end 14-2 outside diameter so that the outside of needle 14/
Periphery, between first end 14-1 and second end 14-2 formed with stage portion（As first step portion according to the present invention）14-
3.Baffle ring 36 can be set, and baffle ring 36 can be arranged in annular groove.Baffle ring 36 can be abutted with the stage portion 14-3 of needle 14,
Move away receiving hole 55-21 so as to limit needle 14 and then prevent needle 14 from deviating from from needle connection parts 55.
Thus, needle 14 can be axially moved together with needle connection parts 55.Moreover, work as needle connection parts 55
Move down and when needle 14 is abutted with valve seat 12-3, compression spring 38 from the first end 14-1 of needle 14 apply spring force with
Make to have between needle 14 and valve seat 12-3 and suitably abut power, so as on the one hand protect needle because providing and contacting cushioning effect
14 and valve seat 12-3 is not damaged, and on the other hand then provides reliable sealing effect.
In preferable example, baffle ring 36 may be embodied as special-shaped circlip（Referring particularly to Fig. 3）.Alternatively, baffle ring
36 can include the elastic body portion of general toroidal and a pair of of grasping part, and each grasping part is respectively from the corresponding of elastic body portion
Extend end.Thus, it is possible to baffle ring 36 is easily manually assembled to annular groove and is dismantled from annular groove, so that
Easily needle 14 and/or compression spring 38 can be dismantled in order to carry out the behaviour such as replacing from needle connection parts 55
Make.
Here, it will be appreciated by those skilled in the art that needle 14 can also be attached to needle connection in other suitable ways
Relay part 55, alternatively, needle 14 can even be integrally formed with needle connection parts 55.
In the example shown in the series of figures, driving mechanism 40 can include the motor of stator 41 and rotor 42.Rotor 42 can be
Rotated in stator 41.Furthermore, it is possible to cylinder 44 is set to realize easy to assembly and easy sealing between stator 41 and rotor 42
Purpose.
In preferable example, rotor 42 is embodied as the cylindric magnet ring of one end open, so as to limit rotor chamber 42-1.
The stop mechanism hereafter referred to is at least partially disposed in rotor chamber 42-1.
In addition, in preferable example, rotor 42 and the mandrel 51 of executing agency 50 are molded integrally so that work as driving machine
Structure（Motor）Rotor 42 is integratedly rotated with mandrel 51 during 40 energization.However, it is understood by those of ordinary skill in the art that rotor 42 with
Mandrel 51 can also be individually formed, and be then permanently connected together by appropriate mode.
In preferable example, executing agency 50 includes：Mandrel 51 as mentioned above；And as mentioned above
Needle connection parts 55.
In some instances, mandrel 51 can include first end（Upper end）51-1 and second end（Lower end）51-2.First end
51-1 could be formed with external screw thread.First end（Male end）51-1 be used for hereafter by the electromagnetism holding mechanism 60 being described
The lower section of dynamic iron 64（Internal thread part）64-2 is threadedly coupled, so as in 51 axial restraint of mandrel and move the circumferentially fixed feelings of iron 64
Dynamic iron 64 is forced to be axially moved under condition by the rotation of mandrel 51（Axially upwardly movement away from mandrel 51）, Huo Zhe
64 axial restraint of dynamic iron（Determined iron to be attracted）And it is circumferentially fixed in the case of mandrel 51 itself forced by the rotation of mandrel 51
It is axially moved（Towards the axially upwardly movement of dynamic iron 64）, this respect will be described further below.Second end 51-2
For being engaged with needle connection parts 55.
In the example shown in the series of figures, can be in the lower portion of mandrel 51 --- it is specially the second end 51-2 in mandrel 51
At neighbouring top --- collar 51-4 is set.Collar 51-4 be used for hereafter by the Part I for the supporting item 80 being described
80-1 is slidably engaged, so as to guide the rotary motion and axial movement relative to supporting item 80 of mandrel 51.In preferable example
In, collar 51-4 could be separately formed, and the body of mandrel 51 is then for example fixedly connected to by interference fit.
In other examples, collar 51-4 can be integrally formed with the body of mandrel 51.
In preferable example, needle connection parts 55 include：Part I（Upper part/supporting item junction surface）55-1；
And Part II as mentioned above（Lower part/needle connection part）55-2.Part I 55-1 is on the one hand used for and the heart
The second end 51-2 of axis 51 is permanently connected so as to integratedly be moved with mandrel 51（Axially move up and down and rotate in a circumferential direction fortune
It is dynamic）, on the other hand then it is used to be slidably engaged with the Part II 80-2 of supporting item 80, so as to guide needle by supporting item 80
The rotary motion and axial movement of connection parts 55.
In the example shown in the series of figures, jack 55-11, and the second end of mandrel 51 are could be formed with Part I 55-1
51-2 can be for example fixedly inserted into jack 55-11 by interference fit, so as to fulfill needle connection parts 55 and the heart
Axis 51 is fixedly connected.Here, it will be appreciated by those skilled in the art that needle connection parts 55 also can be with other appropriate sides
Formula is fixedly connected to mandrel 51, alternatively, needle connection parts 55 can even be integrally formed with mandrel 51.
In the example shown in the series of figures, Part I 55-1 can with cylindrical shape, so as to realize as described above with
The sliding engagement of the Part II 80-2 of supporting item 53.
In some instances, can in outside/periphery of needle connection parts 55, in Part I（Upper part/supporting item
Junction surface）55-1 and Part II（Lower part/needle connection part）Formed with stage portion between 55-2（As according to the present invention
Second step portion）55-4.Compression spring can be set between stage portion 55-4 and supporting item 80（As according to the present invention
Two compression springs）39.Compression spring 39 can be that needle connection parts 55 provide downward spring force, to break in electric expansion valve
Needle connection parts 55 are aided in be moved to together with needle 14, mandrel 51, rotor 42 and dynamic iron 64 so that needle 14 in the case of electricity
Close the position of valve seat 12-3.In addition, compression spring 39 can also provide pulling force so that mandrel 51 keeps same with dynamic iron 64 all the time
One side contacts, this is conducive to eliminate thread pitch during counter motion.However, it is understood by those of ordinary skill in the art that due to valve
Pin connection parts 55, needle 14, mandrel 51, rotor 42 and dynamic iron 64 itself have certain weight to provide above-mentioned power, therefore
Compression spring 39 can be omitted.
In preferable example, electric expansion valve 1 further includes supporting item 80, and supporting item 80 can include：It is as mentioned above
And Part I 80-1；And Part II 80-2 as mentioned above.It could be formed with Part I 80-1 logical
Hole, the through hole can have circular shape.Thus, Part I 80-1 slidably accommodates mandrel by its circular through hole
51 collar 51-4（Equivalent to setting sliding bearing between Part I 80-1 and collar 51-4）, so as to guide mandrel
51 rotary motion and axial movement, so that the rotary motion of mandrel 51 and axial movement are more steady（Obtaining mandrel 51 can
The radial positioning leaned on）.Can also be formed with circular through hole in Part II 80-2, which is used for slidably
Accommodate the Part I 55-1 of needle connection parts 55（Equivalent to first in Part II 80-2 with needle connection parts 55
Sliding bearing is set between point 55-1）, so that the rotary motion and axial movement of needle connection parts 55 are guided, so that needle joins
The rotary motion and axial movement of relay part 55 are more steady（Needle connection parts 55 are made to obtain reliable radial positioning）.With this
Mode, it can be ensured that mandrel 51 and needle connection parts 55 are as a whole（That is executing agency 50）Rotary motion and axial movement
It is more steady.
In preferable example, electromagnetism holding mechanism 60 is arranged on the top of executing agency 50, and electromagnetism holding mechanism 60
Central axis can be arranged to substantially overlap with the rotation axis of mandrel 51.
In preferable example, electromagnetism holding mechanism 60 includes：The electromagnetic coil 61 of magnetic attraction is produced when being powered；Phase
Determine iron 62 for what electromagnetic coil 61 was fixed；And as mentioned above can be relative to the dynamic iron 64 for determining the movement of iron 62.
Electromagnetism holding mechanism 60 is configured to be used for realization the function of voluntarily closing after solenoid valve 1 powers off（Electric expansion valve
Automatic cut-off protection protective function）.That is, electromagnetism holding mechanism 60 is in electromagnetism holding mechanism 60（Specially electromagnetic coil 61）Make during energization
Iron 62 and dynamic 64 magnetic attracting of iron are determined, so that dynamic iron 64 is maintained at the first axial position（Attracted position）.In the first axis
Position, can force mandrel 51 itself in the case where dynamic iron 64 is held in fixed axial height by the rotation of mandrel 51
It is axially moved together with needle connection parts 55 and needle 14, to adjust the valve opening of electric expansion valve 1（Including by valve opening
It is adjusted to standard-sized sheet, middle aperture and fully closed）.On the other hand, electromagnetism holding mechanism 60 can when electromagnetism holding mechanism 60 powers off
Iron 64 is set to discharge to the second axial position（Non- attracted position）.In the second axial position, needle 14 can close valve seat 12-
3.Specifically, when for example making the electromagnetic coil 61 of electric expansion valve 1 and then electromagnetism holding mechanism 60 due to system accident power-off
During power-off, the magnetic attracting determined between iron 62 and dynamic iron 64 disappears.If in this way, at this time needle 14 be in be not turned off valve seat 12-3
（That is the second end 14-2 of needle 14 lifts off a seat 12-3）State, then move iron 64, mandrel 51, rotor 42, needle connection parts
55 and needle 14 jointly under the effect of gravity and/or supporting item 80 and needle connection part can be arranged on as a unit
Fall downwards under the action of the spring force of compression spring 39 between the stage portion 55-4 of part 55 so that needle 14 closes valve seat 12-
3。
In the example shown in the series of figures, upper segment 64-1 and lower section 64-2 referred to above can be included by moving iron 64.Top
Section 64-1 can have circular circumference（I.e. radial section is rounded）.Lower section 64-2 can have the shell with will hereafter be described
Body（As rotation inhibiting member according to the present invention）The non-circular or polygon inner circumferential of 70 through hole matches non-circular or more
Side shape periphery（I.e. radial section is in non-circular or polygon, as anti-rotational structure AR according to the present invention）.For example, such as Fig. 4 A
Shown in Fig. 4 B（Fig. 4 A are to show dynamic iron and mandrel and the section view of the matching relationship of housing along what the plane A-A in Fig. 1 was intercepted
Figure, and Fig. 4 B are the stereograms for showing dynamic iron according to the embodiment of the present invention）, lower section 64-2 can be with radial direction phase
It is symmetrically truncate to both sides to cut round shape periphery, in other words, lower section 64-2 can two opposite generally flat sidepieces with
And two opposite arc-shaped sidepieces.Here, although as described above be iron 64 only in a part（Lower section 64-
2）Place sets anti-rotational structure AR, but it is contemplated that can also set anti-rotational knot on the whole axial length of dynamic iron 64
Structure AR（As described below）.
In preferable example, in the lower section of dynamic iron 64（Internal thread part）Formed with the appearance being open downward in 64-2
Put hole（As internal thread hole according to the present invention）64-21, accommodating hole 64-21 can have circular shape and in accommodating holes
It could be formed with internal thread in 64-21.Accommodating hole 64-21 is used for the first end that mandrel 51 is accommodated with thread connecting mode（Upper end/
Male end）51-1.
According to the embodiment of the present invention, the housing 70 for being used for coordinating with the lower section 64-2 of dynamic iron 64 is set.Housing 70
There can be a through hole 70-1, through hole 70-1 can have and the non-circular or polygonal outer periphery of the lower section 64-2 of dynamic iron 64/outer
Non-circular or polygon inner circumferential/inner wall surface that wall surface matches（I.e. radial section is in non-circular or polygon, as basis
The anti-rotational structure AR of the present invention）.For example, as shown in Figure 4 A, through hole 70-1 can have in the symmetrical Horizon in diametrically both sides
That cuts cuts round shape inner circumferential.Thus, by dynamic iron 64 lower section 64-2 and the through hole 70-1 of housing 70 it is this non-circular or more
Side shape coordinates, and dynamic iron is merely capable of progress axial translational movement and is unable to carry out the movement that rotates in a circumferential direction.
According to the embodiment of the present invention, it is alternatively possible to set stop mechanism 57 in executing agency 50.Stop mechanism
57 can include：Spring helical guideway 57-1；Slip ring 57-3；And guide finger 57-5.Stop mechanism 57 limit mandrel 53 and then
The rotating range of whole executing agency 50, enabling avoid because the excessive rotation of executing agency 50 and caused by screw thread pair（Such as
Threaded connection between the accommodating hole 64-21 of the first end 51-1 of mandrel 51 and the lower section 64-2 of dynamic iron 64）Kill and wear
Problem, so as to ensure the smooth transmission of screw thread pair.
Below with reference to Fig. 8 A, Fig. 8 B, Fig. 8 C and Fig. 8 D descriptions electric expansion valves 1 according to the embodiment of the present invention
The course of work.Wherein, Fig. 8 A, Fig. 8 B, Fig. 8 C and Fig. 8 D are the works for showing electric expansion valve according to the embodiment of the present invention
Make a series of figures of process.
The state being in as shown in Figure 8 A from electric expansion valve 1 proceeds by description, which corresponds to unexpected in system
Iron 64, rotor 42, mandrel 51, needle connection parts 55 and needle 14 is moved in the case of power-off to fall downwardly together so that needle 14
State in which after closing valve seat 12-3.Under the automatic cut-off protection shield state, needle 14 closes valve seat 12-3 so as to which electronics is swollen
Swollen valve 1 is in full close position, and dynamic iron 64, which for example departs from and moves iron 64 and determine iron 62 with determining iron 62, is in non-pull state, and stops
The slip ring 57-3 of position mechanism 57 is for instance in upper position-arresting position.
Then, in the case of service restoration is normal, electricity is applied to driving mechanism 40 so that rotor 42 is in the first direction first
（Direction as shown in Figure 8 A）Rotation.The rotation of rotor 42 causes mandrel 51 together with needle connection parts 55 and needle 14 also along
One direction rotates.With the rotation of mandrel 51, the dynamic iron 64 that is threadedly coupled with the first end 51-1 of mandrel 51 of its underpart section 64-2
Due to the anti-rotational cooperation with housing 70 and can not it is rotating in the case of be forced upwardly translation so that dynamic iron recovers to such as Fig. 8 B
The shown state contacted with determining iron 62.Under recovery state as shown in Figure 8 B, needle 14 still close valve seat 12-3 so as to
Electric expansion valve 1 is still within full close position, and dynamic iron 64 is contacted with determining iron 62 and can applied at this time to electromagnetism holding mechanism 60
Electricity is so that dynamic iron 64 is in magnetic attracting state with determining iron 62, and the slip ring 57-3 of stop mechanism 57 is changed into being in lower position-arresting position
Put.
Then, from the state shown in Fig. 8 B, when needing to open electric expansion valve 1, electric progress is applied to driving mechanism 40
Control so that rotor 42 is along the second direction opposite with first direction（Direction as shown in Figure 8 C）Rotation.The rotation of rotor 42
Mandrel 51 is caused also to be rotated in a second direction together with needle connection parts 55 and needle 14.With the rotation of mandrel 51, it first
The mandrel 51 itself that end 51-1 is threadedly coupled with the lower section 64-2 of dynamic iron 64 is forced together with needle connection parts 55 and needle 14
Move axially upward while rotating, it is possible thereby to open electric expansion valve 1.In this way, electric expansion valve 1 may be at as
State shown in Fig. 8 C, in the state of electric expansion valve normal work, needle 14 lifts off a seat 12-3 so as to electronic expansion
Valve 1 is in fully open position, and dynamic iron 64 keeps being in magnetic attracting state with determining iron 62, and the slip ring 57-3 of stop mechanism 57 is changed into
Again it is in upper position-arresting position.In this respect, the valve opening of electric expansion valve 1 only can only properly be increased, even if also valve is opened
Degree be between standard-sized sheet and it is fully closed between middle aperture（At this time, the slip ring 57-3 of stop mechanism 57 is correspondingly between upper
Centre position between stop bit position and lower position-arresting position）.
Then, when 1 unexpected accident power-off of electric expansion valve in the state of shown in Fig. 8 C, due to electromagnetism holding mechanism 60
Electromagnetic coil 61 power off, determine iron 62 and no longer attract dynamic iron 64.Thus, iron 64, mandrel 51, rotor 42, needle connection parts are moved
55 and needle 14 jointly under the effect of gravity and/or be arranged on supporting item 80 and needle connection parts 55 as a unit
Stage portion 55-4 between compression spring 39 spring force under the action of fall downwards so that needle 14 close valve seat 12-3, such as
Shown in Fig. 8 D（State shown in Fig. 8 D actually corresponds to the state shown in Fig. 8 A）.At this time, by compression spring 38 and compression
The double action of spring 39, needle 14 can be engaged reliably with valve seat 12-3, so as to be reliably achieved without any additional energy
The automatic cut-off protection shield in source.
In the course of work described above with reference to Fig. 8 A to Fig. 8 D, apply electricity to driving mechanism 40 first so that dynamic iron 64 to
Upper translation is contacted up to dynamic iron 64 with determining iron 62, then just applies electricity so that determining iron 62 and the dynamic magnetism of iron 64 to electromagnetism holding mechanism 60
It is attracted.Electricity is applied with determining the forward direction electromagnetism holding mechanism 60 that iron 62 contacts however, it is also possible to be translated up in dynamic iron 64 to dynamic iron 64,
Such as apply electricity simultaneously to driving mechanism 40 and electromagnetism holding mechanism 60.In this way, can be for example in dynamic iron 64 by means of mandrel 51
Rotation and translate up to attracting dynamic iron 64 during specific location upwards by determining the magnetic attraction of iron 62, and mandrel 51 continues
Rotation is to recover to farthest away from dynamic iron 64 and causing needle 14 to close the position of valve seat 12-3.In this way, it is possible to promote dynamic iron
64 are in the magnetic attracting state to contact with each other with determining iron 62.
According to the embodiment of the present invention, following beneficial effect can be at least provided.
（1）According to the embodiment of the present invention, voluntarily closed after dexterously solenoid valve is powered off by Design of Mechanical Structure
The feature integration closed is in electric expansion valve so as to fulfill the automatic cut-off protection protective function of electric expansion valve.Especially, with using directly
The mode for connecing series connection independent electrical magnet valve realizes the scheme of power-off protection function（In this scenario, it is contemplated that pressure drop, independent electromagnetic
The passage section of valve is usually larger so as to which cost is very high）Compare, it is possible to achieve the reliability of overall compact structure and higher, can
So that terminal device business saves twice field brazing technique, and cost can be greatly reduced.In addition, with electric expansion valve
Increase realizes the super capacitor of energy storage to be powered in finite time after a loss of power so as to fulfill valve in control panel
The scheme of closing is compared, and must can be matched to avoid valve with specific controller, super capacitor cost is very high, controller pair
Working environment is than more sensitive relevant issues.In addition, with installing reserve battery in electronic expansion valve controls plate with after a loss of power
It can continue to perform the scheme that valve is closed and compare, periodic replacement battery and not environmentally can be avoided the need for（Lead-acid accumulator pair
Environment has harmful effect）Relevant issues.
（2）According to the embodiment of the present invention, due to being provided with stop mechanism, the rotation of mandrel can suitably be limited
Turn.Thus, can be to avoid the screw thread because of caused by rotor and mandrel excessively rotation such as in the standard-sized sheet and full close position of valve
Pair is killed and wear problem, so as to ensure the smooth transmission of screw thread pair.
（3）According to the embodiment of the present invention, due in rotation inhibiting member（Housing）Anti-rotational knot is set between dynamic iron
Structure AR and it is threaded connection structure between iron and mandrel dynamic, therefore on the one hand after accident power-off moves iron and depart from and determine iron
In the case of enable iron reliably and smoothly recover to determine ferromagnetism actuation state, and on the other hand also can be true
Mandrel is protected to be axially moved together with needle to realize reliable and stable threshold switch process.Particularly, it is real according to the present invention
Mode is applied, due to being threaded connection structure between iron and mandrel dynamic, with setting spiral shell between mandrel and needle connection parts
The scheme of line connection structure is compared, and can make screw connection structure further from the valve needle terminal end for being used for realization valve closing（Lower end）, from
And can reduce as the operation of screw connection structure and may caused by needle connection parts and then needle there is the risk rocked,
It is possible thereby to realize relatively reliable and stable threshold switch process.
（4）According to the embodiment of the present invention, due in rotation inhibiting member（Housing）Anti-rotational knot is set between dynamic iron
Structure AR and connection structure is threaded between iron and mandrel dynamic, passes through bearing and bearing limiting section between dynamic iron and mandrel
Part etc. is compared come the scheme connected, can cause complicatedization to avoid using the parts such as bearing and bearing limiting component,
And can also exempt due to move iron be possible to follow mandrel rotation and relative to determine iron rotation and cause determine iron and dynamic iron it
Between there is the situation of improper abrasion.
Especially, according to the embodiment of the present invention, the disconnected of electric expansion valve is realized with relatively reliable and effective manner
Electric self-protection function.
The present invention can allow some variants and modifications.
For example, as shown in Figure 5 A and 5B（Fig. 5 A are the anti-rotations for showing the first modified example according to the embodiment of the present invention
The sectional view of rotation structure, and Fig. 5 B be the first modified example according to the embodiment of the present invention is shown there is anti-rotational structure
The stereogram of dynamic iron）, moving iron 64A can be formed as having the groove 64A-5 extended along whole axial direction at periphery, such as
With with four groove 64A-5 of 90 degree of circumferentially direction equi-spaced aparts.In addition, housing 70A can be formed as housing 70A's
There is the convex ridge 70A-5 to match with groove 64A-5 at the inner circumferential of through hole 70A-1.In this way, can also reliable landform
Into anti-rotational structure AR.
For another example as shown in Figure 6 A and 6B（Fig. 6 A are show the second modified example according to the embodiment of the present invention anti-
The sectional view of rotational structure, and Fig. 6 B be the second modified example according to the embodiment of the present invention is shown there is anti-rotational structure
Dynamic iron and sleeve stereogram）, can be with moving iron according to the first modified example according to the structure of the dynamic iron 64B of the second modified example
The structure of 64A is identical（With identical exterior contour）.In addition, in the second modified example, dynamic between iron 64B and housing 70B
Sleeve 75B is set as intermediate member（As rotation inhibiting member according to the present invention）.Sleeve 75B can for example be matched somebody with somebody by interference
Close and be fixedly inserted into the through hole of housing 70B, while have at the inner circumferential of the through hole 75B-1 of sleeve 75B and groove
The convex ridge 75B-5 that 64B-5 matches.In this way, anti-rotational structure AR can also be reliably formed.
For another example as shown in figs. 7 a-b（Fig. 7 A are show the 3rd modified example according to the embodiment of the present invention anti-
The sectional view of rotational structure, and Fig. 7 B be the 3rd modified example according to the embodiment of the present invention is shown there is anti-rotational structure
Dynamic iron and sleeve stereogram）, cylindrical circular upper segment is had and in octahedron according to the dynamic iron 64C of the 3rd modified example
The lower section of shape.In addition, in the 3rd modified example, dynamic sleeve 75C is set as middle structure between iron 64C and housing 70C
Part（As rotation inhibiting member according to the present invention）.Sleeve 75C can be fixedly inserted into or with other by interference fit
Appropriate ways（Such as welding, threaded connection etc.）It is fixedly coupled in the through hole of housing 70C, while the through hole of sleeve 75C
75C-1 is in general square shape.The lower section in octahedral shape of dynamic iron 64C is suitable for the through hole for being matchingly inserted into sleeve 75C
In 75C-1 so that dynamic iron 64C can not be rotated in a circumferential direction and be merely able to carry out axial translation.In this way, can also
It is reliably formed anti-rotational structure AR.Moreover, in this way, since four corner portions in square through hole 75C-1 are formed
There is gap to avoid so-called " vapour lock " situation in order to air circulation, therefore be conducive to dynamic iron phase for housing or sleeve etc.
Smoothly translation.
In addition, although as described above be, mandrel 51 forms external screw thread and dynamic iron 64 forms internal thread, but can be with structure
Think, mandrel 51 forms internal thread and dynamic iron 64 forms external screw thread（Such as in mandrel tip setting internal thread hole and in dynamic iron bottom
Prominent bolt portion is set）Or other appropriate thread connecting modes.
Although needle 14 as described above is attached to mandrel 51 via needle connection parts 55, but it is contemplated that valve
Pin 14 can also directly be attached to mandrel 51.
Although as described above be, housing 70,70A, 70B, 70C or sleeve 75B, 75C as intermediate member with
Dynamic iron 64, set anti-rotational structure AR between 64A, 64B, 64C, but it is contemplated that can also be in dynamic iron 64 and other components
（As rotation inhibiting member according to the present invention）Between（Such as moving the periphery of the upper segment 64-1 of iron 64 and electromagnetism holding mechanism
Between the inner circumferential of the cylinder of 60 inner side of electromagnetic coil 61）Anti-rotational structure AR is set.
In short, in electric expansion valve according to the present invention, following advantageous scheme can be included.
In electric expansion valve according to the present invention, the movable valve member is needle, and the valve module further includes valve seat,
Also, the needle is suitable for engaging with the valve seat so that the electric expansion valve is closed.
In electric expansion valve according to the present invention, the executing agency further includes needle connection parts, the needle warp
The mandrel is attached to by the needle connection parts.
In electric expansion valve according to the present invention, the needle connection parts include Part I and Part II,
The Part I is fixedly connected to the mandrel, and the needle is attached to the Part II in a manner of axially slidable.
In electric expansion valve according to the present invention, set between the needle connection parts and the needle to described
Needle applies the first compression spring of spring force.
In electric expansion valve according to the present invention, receiving hole is set at the Part II of the needle connection parts,
One end of the first compression spring and the needle is arranged in the receiving hole so that the first compression spring is located at institute
State between needle connection parts and described one end of the needle.
In electric expansion valve according to the present invention, annular groove is set at the inner wall surface of the lower end of the receiving hole,
The electric expansion valve further includes baffle ring, and the baffle ring is arranged in the annular groove so as to being formed in the needle
First step portion at periphery abuts, and thus limits the needle and deviates from from the needle connection parts.
In electric expansion valve according to the present invention, the baffle ring is embodied as removably being arranged in the annular groove
In special-shaped circlip.
In electric expansion valve according to the present invention, the baffle ring includes the elastic body portion of general toroidal and a pair is grabbed
Portion is held, associated end of each grasping part respectively from the elastic body portion is extended.
In electric expansion valve according to the present invention, the driving mechanism includes rotor, the rotor be embodied as with it is described
Cylindric magnet ring that mandrel is integrally formed or is permanently connected, one end open.
In electric expansion valve according to the present invention, the rotation for being used for limiting the mandrel is set in the executing agency
The stop mechanism of scope.
In electric expansion valve according to the present invention, the stop mechanism includes：Spring helical guideway；Slip ring；And lead
To pin.
In electric expansion valve according to the present invention, the mandrel includes male end, and the dynamic iron includes interior spiral shell
Pit, thus the mandrel can realize the threaded connection with the dynamic iron, alternatively, the mandrel includes internal thread hole, and
And the dynamic iron includes prominent bolt portion, thus the mandrel can realize the threaded connection with the dynamic iron.
In electric expansion valve according to the present invention, the electromagnetism holding mechanism further includes：Magnetic attachment is produced when being powered
The electromagnetic coil of power；And fixed relative to the electromagnetic coil, suitable for determining iron with what the dynamic ferromagnetism was attracted.
In electric expansion valve according to the present invention, the dynamic iron is set at least a portion in axial direction to be used for
Form at least one of non-circular or polygonal outer periphery of the anti-rotational structure.
In electric expansion valve according to the present invention, the electric expansion valve includes rotation inhibiting member, the anti-rotational structure
Part has through hole, and the through hole is provided with matching with the non-circular or polygonal outer periphery of the dynamic iron, described for being formed
At least one of non-circular or polygon inner circumferential of anti-rotational structure.
In electric expansion valve according to the present invention, the rotation inhibiting member is the appearance to form the electric expansion valve
At least one of housing or the sleeve being fixedly coupled in the through hole of the housing.
In electric expansion valve according to the present invention, the dynamic iron includes the first section and the second section, and described first
Section has circular circumference, and second section, which has, cuts round shape periphery, also, the through hole of the housing has what is matched to cut
Round shape inner circumferential.
In electric expansion valve according to the present invention, the dynamic iron is formed as having at periphery and prolongs along whole axial direction
The groove stretched, also, the housing is formed as convex with matching with the groove at the inner circumferential of the through hole of the housing
Ridge.
In electric expansion valve according to the present invention, the dynamic iron is formed as having at periphery and prolongs along whole axial direction
The groove stretched, also, there is the convex ridge to match with the groove at the inner circumferential of the through hole in the sleeve.
In electric expansion valve according to the present invention, the dynamic iron has cylindrical circular first section and in octahedron
Second section of shape, also, the through hole of the sleeve is in general square shape and suitable for accommodating the second section of the dynamic iron.
In electric expansion valve according to the present invention, the electric expansion valve further includes supporting item, and the supporting item is suitable for
Part I with the collar of the lower portion for being arranged on the mandrel of the mandrel and with the needle connection parts
It is slidably engaged.
In electric expansion valve according to the present invention, formed with second step at the periphery of the needle connection parts
Portion, sets the second compression spring between the second step portion and the supporting item, and the second compression spring is suitable for institute
State needle connection parts and spring force is provided.
In present specification, the use of directional terminology " top ", " bottom ", " on ", " under ", " top " and " lower section " etc. is only
For the purpose easy to description, should not be taken as restricted.
Although with reference to illustrative embodiments, invention has been described, but it is to be understood that the present invention is not
Specific example/the embodiment be described in detail and shown in text is confined to, without departing from claims limited range
In the case of, those skilled in the art can make various changes to illustrative embodiments.
Claims (23)
1. a kind of electric expansion valve (1), including：
Valve module (10), the valve module (10) include movable valve member (14) and for flowing through the electric expansion valve
(1) flow of fluid is adjusted；
Executing agency (50), the executing agency (50) include mandrel (51) and for drive the movable valve member (14) into
Row is axially moved；
Driving mechanism (40), the driving mechanism (40) are used to provide power for the executing agency (50)；And
Electromagnetism holding mechanism (60), the electromagnetism holding mechanism (60) include dynamic iron (64,64A, 64B, 64C) and suitable for passing through
Electromagnetic attraction keeps and discharges the executing agency (50), when the electromagnetism holding mechanism (60) keeps institute in the case of energization
When stating executing agency (50), the mandrel (51) can drive the movable valve member (14) to be axially moved to adjust
The valve opening of electric expansion valve (1) is stated, when the electromagnetism holding mechanism (60) discharges the executing agency under powering-off state
(50) when, the movable valve member (14) is moved to the position for make it that the electric expansion valve (1) is closed,
Wherein, the mandrel (51) is threadedly coupled with the dynamic iron (64,64A, 64B, 64C) so that the mandrel (51) can
Rotated relative to the dynamic iron (64,64A, 64B, 64C), also, the electric expansion valve (1) is provided with for the dynamic iron
The anti-rotational structure (AR) of (64,64A, 64B, 64C) so that the dynamic iron (64,64A, 64B, 64C) is merely able to along the electronics
The axial direction of expansion valve (1) carries out translational motion and is unable to be rotated.
2. electric expansion valve (1) according to claim 1, wherein
The movable valve member (14) is needle (14),
The valve module (10) further includes valve seat (12-3),
Also, the needle (14) is suitable for engaging with the valve seat (12-3) so that the electric expansion valve (1) is closed.
3. electric expansion valve (1) according to claim 2, wherein, the executing agency (50) further includes needle connection part
Part (55), the needle (14) are attached to the mandrel (51) via the needle connection parts (55).
4. electric expansion valve (1) according to claim 3, wherein, the needle connection parts (55) include Part I
(55-1) and Part II (55-2), the Part I (55-1) are fixedly connected to the mandrel (51), the needle
(14) Part II (55-2) is attached in a manner of axially slidable.
5. electric expansion valve (1) according to claim 4, wherein, in the needle connection parts (55) and the needle
(14) the first compression spring (38) for applying spring force to the needle (14) is set between.
6. electric expansion valve (1) according to claim 5, wherein, in the Part II of the needle connection parts (55)
(55-2) place sets receiving hole (55-21), one end (14-1) arrangement of the first compression spring (38) and the needle (14)
In the receiving hole (55-21) so that it is described first compression spring (38) be located at the needle connection parts (55) with it is described
Between described one end (14-1) of needle (14).
7. electric expansion valve (1) according to claim 6, wherein
Annular groove is set at the inner wall surface of the lower end of the receiving hole (55-21),
The electric expansion valve (1) further includes baffle ring (36), the baffle ring (36) be arranged in the annular groove so as to
It is formed in the first step portion (14-3) at the periphery of the needle (14) to abut, thus limits the needle (14) from the valve
Pin connection parts (55) are deviate from.
8. electric expansion valve (1) according to claim 7, wherein, the baffle ring (36) is embodied as removably cloth
Put the special-shaped circlip in the annular groove.
9. electric expansion valve (1) according to claim 8, wherein, the baffle ring (36) includes the elasticity of general toroidal originally
Body portion and a pair of of grasping part, associated end of each grasping part respectively from the elastic body portion are extended.
10. electric expansion valve (1) according to claim 1, wherein, the driving mechanism (40) includes rotor (42), institute
State rotor (42) and be embodied as cylindric magnet ring be integrally formed or be permanently connected with the mandrel (51), one end open.
11. electric expansion valve (1) according to claim 1, wherein, set in the executing agency (50) and be used to limit
The stop mechanism (57) of the rotating range of the mandrel (51).
12. electric expansion valve (1) according to claim 11, wherein, the stop mechanism (57) includes：Spring is spiral to lead
Rail (57-1)；Slip ring (57-3)；And guide finger (57-5).
13. electric expansion valve (1) according to claim 1, wherein
The mandrel (51) includes male end (51-1), and the dynamic iron (64,64A, 64B, 64C) includes internal thread hole
(64-21), thus the mandrel (51) and the dynamic iron (64,64A, 64B, 64C) can realize the threaded connection,
Alternatively, the mandrel (51) includes internal thread hole, and the dynamic iron (64,64A, 64B, 64C) includes prominent bolt
Portion, thus the mandrel (51) and the dynamic iron (64,64A, 64B, 64C) can realize the threaded connection.
14. electric expansion valve (1) according to claim 1, wherein, the electromagnetism holding mechanism (60) further includes：Logical
The electromagnetic coil (61) of magnetic attraction is produced when electric；And it is fixed relative to the electromagnetic coil (61), suitable for it is described dynamic
Iron (64,64A, 64B, 64C) magnetic attracting determines iron (62).
15. the electric expansion valve (1) according to any one of claim 1 to 14, wherein, the dynamic iron (64,64A, 64B,
64C) set at least a portion in axial direction and be used to form at least one of non-of the anti-rotational structure (AR)
Circular or polygonal outer periphery.
16. electric expansion valve (1) according to claim 15, wherein, the electric expansion valve (1) includes anti-rotational structure
Part, the rotation inhibiting member have a through hole, the through hole be provided with the non-circular of the dynamic iron (64,64A, 64B, 64C) or
It is that polygonal outer periphery matches, for being formed at least one of non-circular or polygon of the anti-rotational structure (AR)
Week.
17. electric expansion valve (1) according to claim 16, wherein, the rotation inhibiting member is that to form the electronics swollen
At least one of housing (70,70A) of the appearance of swollen valve (1) or the through hole for being fixedly coupled to the housing (70B, 70C)
In sleeve (75B, 75C).
18. electric expansion valve (1) according to claim 17, wherein
The dynamic iron (64) includes the first section (64-1) and the second section (64-2), and first section (64-1) has circle
Shape periphery, second section (64-2), which has, cuts round shape periphery,
Also, the through hole (70-1) of the housing (70) has what is matched to cut round shape inner circumferential.
19. electric expansion valve (1) according to claim 17, wherein
The dynamic iron (64A) is formed as having the groove (64A-5) extended along whole axial direction at periphery,
Also, the housing (70A) is formed as having and the ditch at the inner circumferential of the through hole (70A-1) of the housing (70A)
The convex ridge (70A-5) that groove (64A-5) matches.
20. electric expansion valve (1) according to claim 17, wherein
The dynamic iron (64B) is formed as having the groove (64B-5) extended along whole axial direction at periphery,
It is also, convex with matching with the groove (64B-5) at the inner circumferential of the through hole (75B-1) of the sleeve (75B)
Ridge (75B-5).
21. electric expansion valve (1) according to claim 17, wherein
The dynamic iron (64C) has cylindrical circular first section and the second section in octahedral shape,
Also, the through hole (75C-1) of the sleeve (75C) is in general square shape and suitable for accommodating the second of the dynamic iron (64C)
Section.
22. the electric expansion valve (1) according to any one of claim 4 to 9, wherein, the electric expansion valve (1) is also wrapped
Supporting item (80) is included, the supporting item (80) is suitable for and the lower portion for being arranged on the mandrel (51) of the mandrel (51)
Collar (51-4) and Part I (55-1) sliding engagement with the needle connection parts (55).
23. electric expansion valve (1) according to claim 22, wherein, at the periphery of the needle connection parts (55)
Formed with second step portion (55-4), the second compression is set between the second step portion (55-4) and the supporting item (80)
Spring (39), the second compression spring (39) are suitable for the needle connection parts (55) and provide spring force.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651916.9A CN104696558B (en) | 2013-12-05 | 2013-12-05 | Electronic expansion valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651916.9A CN104696558B (en) | 2013-12-05 | 2013-12-05 | Electronic expansion valve |
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| Publication Number | Publication Date |
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| CN104696558A CN104696558A (en) | 2015-06-10 |
| CN104696558B true CN104696558B (en) | 2018-05-01 |
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| CN110349684B (en) * | 2019-07-15 | 2021-03-09 | 中国原子能科学研究院 | Reactivity control device |
| CN112460860A (en) * | 2019-09-06 | 2021-03-09 | 艾默生环境优化技术(苏州)有限公司 | Electronic expansion valve |
| DE102020215268A1 (en) * | 2020-12-03 | 2022-06-09 | Mahle International Gmbh | expansion valve |
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| CN102454797B (en) * | 2010-10-26 | 2013-02-20 | 浙江三花股份有限公司 | Electromagnetic expansion valve |
| WO2013127275A1 (en) * | 2012-02-28 | 2013-09-06 | 艾默生环境优化技术(苏州)有限公司 | Pilot electronic expansion valve |
| CN202501077U (en) * | 2012-02-28 | 2012-10-24 | 艾默生环境优化技术(苏州)有限公司 | Electronic expansion valve |
| CN202812412U (en) * | 2012-09-06 | 2013-03-20 | 艾默生环境优化技术(苏州)有限公司 | Electronic expansion valve |
| CN202946690U (en) * | 2012-10-22 | 2013-05-22 | 艾默生环境优化技术(苏州)有限公司 | Electronic expansion valve |
| CN203641609U (en) * | 2013-12-05 | 2014-06-11 | 艾默生环境优化技术(苏州)有限公司 | Electronic expansion valve |
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