CN108758058A - Rotor assembly, assembly method and the electric expansion valve with it - Google Patents
Rotor assembly, assembly method and the electric expansion valve with it Download PDFInfo
- Publication number
- CN108758058A CN108758058A CN201810582309.4A CN201810582309A CN108758058A CN 108758058 A CN108758058 A CN 108758058A CN 201810582309 A CN201810582309 A CN 201810582309A CN 108758058 A CN108758058 A CN 108758058A
- Authority
- CN
- China
- Prior art keywords
- screw axis
- guide rail
- rotor assembly
- fixing piece
- spring guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Plasma & Fusion (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses a kind of rotor assembly, assembly method and with its electric expansion valve, rotor assembly includes rotor magnetic ring, and rotor magnetic ring is formed as the hollow columnar of open at one end, the other end of rotor magnetic ring be equipped with along its axially through channel；Screw axis, axial direction of the screw axis along channel are plugged in channel, and one end of screw axis stretches out the open end of rotor magnetic ring and stretches out channel equipped with the other end along its axially extending elongated slot, screw axis；One end of spring guide rail, spring guide rail is embedded in elongated slot, the other end of spring guide rail along screw axis it is axial to other end spiral surrounding in the outside wall surface of screw axis；At least part of fixing piece, fixing piece and screw axis is welded to connect so that one end of spring guide rail to be pressed in elongated slot.The rotor assembly has many advantages, such as that simple in structure, manufacture is easy, dependable performance, reduces cost.
Description
Technical field
The present invention relates to rotor assembly, the assembly method of rotor assembly and with the electric expansion valve of the rotor assembly, tool
Body is related to a kind of simple structure installed and used on air conditioner, refrigerator etc., the easy rotor assembly of manufacture and rotor assembly
Assembly method and electric expansion valve with the rotor assembly.
Background technology
Existing electric expansion valve on the refrigeration machines such as air conditioner, refrigerator can adjust refrigerant fluid flow,
Existing electric expansion valve generally includes to have the valve body of valve chamber and valve seat and is fixed on the cylinder shell on valve body top, in the shell
Installation rotor in vivo installs stator in hull outside, and the rotor in electric expansion valve includes screw axis, in the axis upper end of screw axis
Portion is provided with a little elongated slot, the annular groove being arranged circumferentially along screw axis peripheral surface is further opened on screw axis, annular groove is close to small
Long trench bottom is equipped with spring guide rail on screw axis, and the upper limit end of spring guide rail is embedded in little elongated slot, in annular groove
It, can be by the upper limit end of snap ring fastening spring guide rail, due to little elongated slot bottom and annular groove equipped with snap ring
Position dimension required precision it is very high, if position dimension is too small, snap ring will be unable to stick into annular groove, and position dimension is such as
Fruit is excessive, there are gap between spring guide rail upper limit end and little elongated slot bottom, electric expansion valve at work, spring guide rail
Rotor limit accuracy can be influenced along little elongated slot axial float, to influence the performance of valve, have product qualified rate low, at
The shortcomings of this is high.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art.
For this purpose, the present invention proposes a kind of rotor assembly, which has many advantages, such as simple in structure, and manufacture is easy.
The present invention also proposes that a kind of assembly method of rotor assembly, the assembly method use laser welding, avoid use
The high current when welding such as argon arc welding, plasma weldering, electric resistance welding is on the change of rotor magnetic ring magnetic property and influence.
The present invention also proposes a kind of electric expansion valve, and the manufacturing cost of the electric expansion valve is relatively low, and performance is stablized.
The rotor assembly of embodiment according to a first aspect of the present invention, including：Rotor magnetic ring, the rotor magnetic ring are formed as one
Hold open hollow columnar, the other end of the rotor magnetic ring be equipped with along its axially through channel；Screw axis, the screw axis
Axial direction along the channel is plugged in the channel, and one end of the screw axis is stretched out the open end of the rotor magnetic ring and set
Have along its axially extending elongated slot, the other end of the screw axis stretches out the channel；Spring guide rail, the one of the spring guide rail
End is embedded in the elongated slot, the other end of the spring guide rail along the screw axis it is axial to other end spiral surrounding in institute
It states in the outside wall surface of screw axis；Fixing piece, at least part of the fixing piece and the screw axis are welded to connect with will be described
One end of spring guide rail is pressed in the elongated slot.
Rotor assembly according to the ... of the embodiment of the present invention will by fixing piece after one end of spring guide rail is embedded in elongated slot
One end of spring guide rail compresses, and by fixing piece with screw axis by being welded and fixed, need not be processed on the peripheral surface of screw axis
The annular groove of high position accuracy, it is therefore prevented that gap play occurs after spring guide rail is fixed in elongated slot, have it is simple and reliable for structure,
The advantages that manufacture is easy, end properties are stablized.
According to one embodiment of present invention, the fixing piece is fixedly connected with the screw axis by laser welding.
According to one embodiment of present invention, the fixing piece is formed as snap ring.
According to one embodiment of present invention, the periphery of the fixing piece and the screw axis is weldingly connected by circumferential direction.
According to one embodiment of present invention, the periphery of the fixing piece and the screw axis passes through annularly spaced more
A spot welding is connected.
According to one embodiment of present invention, the section of the snap ring is formed as rectangle.
According to one embodiment of present invention, the snap ring is formed as stainless steel metal wire.
The assembly method of the rotor assembly of embodiment according to a second aspect of the present invention, including：S1, spring guide rail is set in
And it will be in the elongated slot of the horizontal insertion in one end of the spring guide rail screw axis on screw axis；S2, fixing piece is set in it is described
On screw axis and the fixing piece is made to compress one end of the spring guide rail；S3, by the outer of the fixing piece and the screw axis
Circumferential surface intersection passes through laser welding.
According to one embodiment of present invention, in step S3, the peripheral surface of the snap ring and the screw axis has a common boundary
Excircle boxing one week of the place along the screw axis.
According to one embodiment of present invention, in step S3, the peripheral surface of the snap ring and the screw axis has a common boundary
It is welded along the outer circle weekly interval of the screw axis at place.
The electric expansion valve of embodiment according to a third aspect of the present invention, including the rotor assembly described in above-described embodiment.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the longitudinal section view according to electric expansion valve in the prior art；
Fig. 2 is the enlarged drawing of a-quadrant in Fig. 1；
Fig. 3 is the longitudinal section view of rotor assembly according to the ... of the embodiment of the present invention；
Fig. 4 is the front view of the fixing piece of rotor assembly according to the ... of the embodiment of the present invention；
Fig. 5 is the sectional view of the fixing piece of rotor assembly according to the ... of the embodiment of the present invention；
Fig. 6 is the profile view of one end of the screw axis of rotor assembly according to the ... of the embodiment of the present invention；
Fig. 7 is the sectional view of one end of the screw axis of rotor assembly according to the ... of the embodiment of the present invention；
Fig. 8 is the fixing piece of rotor assembly according to the ... of the embodiment of the present invention and the assembly partial sectional view of spring guide rail；
Fig. 9 is the fixing piece of rotor assembly according to the ... of the embodiment of the present invention and the assembling schematic diagram of spring guide rail；
Figure 10 is the flow chart of the assembly method of rotor assembly according to the ... of the embodiment of the present invention.
Reference numeral：
Rotor assembly 100；
Rotor magnetic ring 10；Channel 11；
Screw axis 20；Elongated slot 21；Lead screw 22；Axis 23；Balance aperture 24；Inner cavity 25；External thread part 26；
Spring guide rail 30；Fixing piece 40；
Needle 50；Lateral aperture 51；
Slip ring 60；Compressed spring 70；Smooth gasket 80；Limit stop ring 90；
Electric expansion valve 1 '；
Valve body 2；Inlet tube 2a；Outlet tube 2b；Valve chamber 2c；Valve seat 2d；Flange loading board 2e；Spigot nut fixed part 2g,
Spigot nut 3；Internal thread part 3a；
Rotor 4；Spring guide rail 4a；Slip ring 4b；Snap ring 4c；Axis 4d；Gasket 4e；Needle 4f；Compression helical spring 4g；
Valve port 4h；Limit stop ring 4j；Lead screw 4k；Rotor magnetic ring 4l；External thread part 4m；
Shell 5；Bearing support 5a；Arresting lever 5b；There is bottom cylinder 5c；
Stator 6；Yoke 6a；Coil rack 6b；Stator coil 6c；Yoke 6d；Unsaturated-resin 6e；
Conducting wire 7；Terminal 7a.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, limit
There is the feature of " first ", " second " to can explicitly or implicitly include one or more this feature surely.The present invention's
In description, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The present invention is inventor based on the fact that the innovation and creation made.
Fig. 1 and Fig. 2 shows that a kind of electric expansion valve 1 ' in the prior art, wherein Fig. 1 are the vertical of electric expansion valve 1 '
Sectional view, Fig. 2 are the enlarged drawings of a-quadrant in Fig. 1.
As depicted in figs. 1 and 2, valve body 2 has valve chamber 2c and spigot nut fixed part 2g, and refrigerant is equipped in valve chamber 2c
The inlet tube 2a and outlet tube 2b that equal fluids come in and go out, while valve seat 2d is equipped inside valve chamber 2c, valve seat 2d and needle 4f
The valve port 4h contacts and leave to realize flow control that front end is formed.
Valve seat 2d and spigot nut 3 are fixed spigot nut fixed part 2g above valve chamber 2c, are being oriented to spiral shell
The inner circumferential of mother 3 is installed by interference fit after being manufactured respectively equipped with internal thread part 3a, lead screw 4k and axis 4d and screw axis is made, in silk
The external thread part 4m formed in the outer circle of bar 4k is screwed on internal thread part 3a, and spiral shell is constituted with internal thread part 3a and external thread part 4m
Line pair feed mechanism.Needle 4f is installed in the lower end of lead screw 4k, slidably, needle 4f by compression by being installed by needle 4f
Compression helical spring 4g in the lower end inner cavity of lead screw 4k below pressing to, is to increase compression helical spring 4g along spring
The flexibility ratio of heart rotation, is equipped with gasket 4e, in order to limit among the end faces compression helical spring 4g and screw lower end portion intracavity bottom
Needle 4f processed is released the lower end inner cavity of lead screw 4k by compression helical spring 4g, and limiting block is equipped at lead screw 4k cavity ends
Enclose 4j.
The shell 5 for being fixed on 2 top of valve body has bottom cylinder 5c including cylindric, and circle is provided with there is the bottom bottoms cylinder 5c
The centre lid bearing support 5a, bearing support 5a is equipped with circular hole, bottom is plane, and bearing support 5a is welded with arresting lever 5b on baseplane,
Bearing support 5a external cylindrical surfaces and there is the cooperation of bottom cylinder 5c inner headed faces, sets that there are three small protrusions on the circumference of bearing support 5a external cylindrical surfaces
It realizes and fixes.Shell 5 and valve body flange loading board 2e is located at the upper end of valve body 2, has bottom cylinder 5c lower ending openings end and uses welding etc.
The stage portion for being fixed on valve body upper flange shape plate 2e carries out butt welding connection.
The rotor magnetic ring 4l with permanent magnet is directly injection-moulded in screw axis stage casing in rotor 4, on lead screw axis in axis 4d
End is provided with a little elongated slot, and the axis 4d outer circumference surfaces close to little elongated slot bottom are equipped with an annular groove, are set on axis 4d upper outer circumferences
There are spring guide rail 4a and slip ring 4b, the one of spring guide rail 4a limits in the horizontal embedded little elongated slot in end, and snap ring 4c is used in combination to block
After fastening, the upper ends axis 4d and bearing support 5a centre circular hole activities coordinate.
Slip ring 4b can be slided up and down in the helicla flute that spring guide rail 4a is formed with axis 4d upper peripheries, and be carried out at both ends
Limit, the most upper and lower limit that rotor 4 moves up and down is by being fixed on spring guide rail 4a on axis 4d, slip ring 4b and arresting lever 5b structures
At arrestment mechanism realize.
In rotor 4 inside shell 5, outside stator 6 outside shell 5, stator 6 is in being fastened on shell 5
Between connecting hole, the inside of stator 6 accommodates the stator coil 6c being wound on coil rack 6b and yoke 6d, 6a up and down, and external application is not
Saturated resin 6e plastic packagings, stator coil 6c is by conducting wire 7 and is located at the terminal 7a of stator periphery and powers on.To stator coil 6c
After being powered, yoke 6d, 6a make rotor 4 rotate by excitatory, so that needle 4f slidings in rotor 4 is driven by feed screw mechanism
Front end valve port 4h makees on-off action to realize that refrigerant flow adjusts.
When installing snap ring 4c, the position dimension required precision of little elongated slot bottom end and annular groove is very high, position dimension
When small, snap ring 4c can not be sticked into annular groove；When position dimension is big, spring guide rail 4a has gap in little elongated slot,
When electric expansion valve works, spring guide rail 4a and slip ring 4b will generate axial float along little elongated slot, influence rotor 4 and limit essence
Degree, to influence the performance of valve, have product qualified rate it is low, it is of high cost the shortcomings of.
Based on this, present inventor passes through long-term creative work, obtains following innovation and creation.
Below with reference to the accompanying drawings rotor assembly 100 according to the ... of the embodiment of the present invention is specifically described.
As shown in Fig. 3 to Fig. 9, rotor assembly 100 according to the ... of the embodiment of the present invention include rotor magnetic ring 10, screw axis 20,
Spring guide rail 30 and fixing piece 40.
Specifically, rotor magnetic ring 10 is formed as the hollow columnar of open at one end, the other end of rotor magnetic ring 10 is equipped with edge
Its axially through channel 11, screw axis 20 is plugged on along the axial direction in channel 11 in channel 11, and one end of screw axis 20, which is stretched out, to be turned
The open end of sub- magnet ring 10 and equipped with along its axially extending elongated slot 21, the other end of screw axis 20 stretches out channel 11, and spring is led
One end of rail 30 is embedded in elongated slot 21, and the other end of spring guide rail 30 exists along the axial of screw axis 20 to other end spiral surrounding
In the outside wall surface of screw axis 20, at least part of fixing piece 40 and screw axis 20 is welded to connect with by one end of spring guide rail 30
It is pressed in elongated slot 21.
In other words, rotor assembly 100 according to the ... of the embodiment of the present invention is mainly led by rotor magnetic ring 10, screw axis 20, spring
Rail 30 and fixing piece 40 form, and rotor magnetic ring 10 is formed as hollow columnar, the open at one end of rotor magnetic ring 10, rotor magnetic ring 10
The other end is equipped with channel 11, and channel 11 is along rotor magnetic ring 10 axially through being inserted with screw axis 20, screw axis in channel 11
20 are equipped with elongated slot 21 along the axially extending of channel 11, in one end of screw axis 20, and open end is stretched out in one end of screw axis 20, in silk
The outside wall surface of bar axis 20 is equipped with spring guide rail 30, and one end of spring guide rail 30 is embedded in elongated slot 21, spring guide rail 30 it is another
End is equipped with along the axial to other end spiral surrounding of screw axis 20 in the outside of one end of spring guide rail 30 and screw axis 20
Fixing piece 40, fixing piece 40 and at least part of screw axis 20 are welded to connect, so as to be led spring by fixing piece 40
One end of rail 30 is pressed in elongated slot 21.
Rotor assembly 100 according to the ... of the embodiment of the present invention is using rotor magnetic ring 10, screw axis 20, spring guide rail 30 as a result,
The device being combined with fixing piece 40 after one end of spring guide rail 30 is embedded in elongated slot 21, is led spring by fixing piece 40
One end of rail 30 compresses, and by fixing piece 40 by being welded and fixed, high position essence need not be processed on the peripheral surface of screw axis 20
The annular groove of degree also prevents that axial gap play occurs after spring guide rail 30 is fixed in elongated slot 21, have it is simple in structure can
It leans on, manufacture the advantages that easy, end properties are stablized.
According to one embodiment of present invention, fixing piece 40 can be fixedly connected with screw axis 20 by laser welding, laser
It is non-contact weld to be welded and fixed to workpiece, high current when avoiding using welding such as argon arc welding, plasma weldering, electric resistance weldings
On the change of the magnetic property of rotor magnetic ring 10 and influence, it can ensure magnet ring performance.
As shown in Fig. 4 to Fig. 9, optionally, fixing piece 40 is formed as snap ring.
In certain specific embodiments of the invention, fixing piece 40 and the periphery of screw axis 20 can weld phase by circumferential direction
Even.
According to one embodiment of present invention, fixing piece 40 and the periphery of screw axis 20 pass through annularly spaced multiple points
Weldering is connected, and can be selected according to laser weld strength using spot welding or circumferential welding.
As shown in Figure 5 and Figure 8, optionally, the section of snap ring is formed as rectangle.
Further, snap ring is formed as stainless steel metal wire, can pass through flexible stainless steel metal wire
Coiling forms.
To sum up, rotor assembly 100 according to the ... of the embodiment of the present invention, is led using rotor magnetic ring 10, screw axis 20, spring
There is the device that rail 30 and fixing piece 40 are combined simple and reliable for structure, manufacture to be easy, end properties are stable, reduction is produced into
This advantages that.
As shown in Figure 10, the assembly method 200 of rotor assembly according to the ... of the embodiment of the present invention, including：
S1, spring guide rail 30 is set on screw axis 20 and by the length of the horizontal embedded screw axis in one end of spring guide rail 30 20
In slot 21.
S2, one end that fixing piece 40 is set on screw axis 20 and makes 40 holddown spring guide rail 30 of fixing piece.
S3, the peripheral surface intersection of fixing piece 40 and screw axis 20 is passed through into laser welding.
Optionally, in step S3, the outer circle chow ring of the peripheral surface intersection of snap ring and screw axis 20 along screw axis 20
Weldering one week.
Further, in step S3, the excircle of the peripheral surface intersection of snap ring and screw axis 20 along screw axis 20
Interval welding can be selected to be welded using spot welding or circumferential direction according to laser weld strength.
To sum up, the assembly method 200 of rotor assembly according to the ... of the embodiment of the present invention, is fixed using laser welding
Part 40 and screw axis 20 are avoided since laser welding is non-contact weld to workpiece using argon arc welding, plasma weldering, electricity
The high current when welding such as welding resistance can ensure magnet ring performance to the change of the magnetic property of rotor magnetic ring 10 and influence.
Electric expansion valve according to the ... of the embodiment of the present invention includes the rotor assembly 100 of above-described embodiment, and electric expansion valve is also
It may include valve body, shell and stator module, refrigerant can be adjusted by the needle 50 for contacting, leaving with the indoor valve seat of valve
By flow, shell is fixed on valve body, and being equipped in shell makes the contact of needle 50, the rotor assembly 100 that leaves, stator pack
It is mounted in outside part on shell and driving rotor assembly 100 is rotated, stepping electricity may make up by rotor assembly 100 and stator module
Machine.Screw axis 20 in rotor assembly 100 can be integrally formed part, can also be by lead screw 22 and axis 23 are installed respectively
At the rotor magnetic ring 10 with permanent magnet being directly injection-moulded on lead screw 22, the limit that spring guide rail 30 and slip ring 60 are constituted
Position mechanism is configurable on 23 excircle of axis, and needle 50 may be provided at the lower end of lead screw 22, is made the contact of needle 50, is lifted off a seat
Driving mechanism may include spigot nut, and spigot nut is stretched out from valve body to 100 direction of rotor assembly to be fixed, and is set in spigot nut
Have an internal thread part, the excircle of the lower end of lead screw 22 has an external thread part 26 screwed with internal thread part, the upper end of lead screw 22 with
The interference fit of axis 23 is connected into screw axis 20.Driving mechanism can be feed screw mechanism, needle 50 slidably, the upper end of needle 50
The center in portion can be equipped with an axial aperture, and lateral aperture 51 is equipped with 50 stage casing of needle, axial aperture and to communicate transverse direction small
Hole 51 and composition valve chamber and the isopiestic equilibrations hole in shell, needle 50 is by compression mounted on the pressure of 22 lower end inner cavity 25 of lead screw
Contracting spring 70 is by pressing to lower section, to increase the flexibility ratio that compressed spring 70 is rotated along spring center, in the end face of compressed spring 70
Smooth gasket 80 is equipped between 25 bottom of inner cavity of 22 lower end of lead screw, release to limit needle 50 by compressed spring 70 in
Chamber 25 is provided with limit stop ring 90 in 25 end of inner cavity, meanwhile, in order to make inner cavity 25 and the peripheral air pressure of lead screw 22 of lead screw 22
Equipressure is equipped with balance aperture 24 on the cylindrical surface of inner cavity 25.
Since rotor assembly 100 according to the ... of the embodiment of the present invention has above-mentioned technique effect, implemented according to the present invention
Example electric expansion valve also have corresponding technique effect, that is, have it is simple and reliable for structure, manufacture be easy, end properties stablize,
The advantages that reducing cost.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is limited by claim and its equivalent.
Claims (11)
1. a kind of rotor assembly, which is characterized in that including：
Rotor magnetic ring, the rotor magnetic ring are formed as the hollow columnar of open at one end, and the other end of the rotor magnetic ring is equipped with edge
Its axially through channel；
Screw axis, the screw axis are plugged on along the axial direction in the channel in the channel, and institute is stretched out in one end of the screw axis
It states the open end of rotor magnetic ring and stretches out the channel equipped with the other end along its axially extending elongated slot, the screw axis；
One end of spring guide rail, the spring guide rail is embedded in the elongated slot, and the other end of the spring guide rail is along the silk
The axial direction of bar axis is to other end spiral surrounding in the outside wall surface of the screw axis；
Fixing piece, at least part of the fixing piece and the screw axis are welded to connect with by a side pressure of the spring guide rail
Tightly in the elongated slot.
2. rotor assembly according to claim 1, which is characterized in that the fixing piece passes through Laser Welding with the screw axis
It connects and is fixedly connected.
3. rotor assembly according to claim 2, which is characterized in that the fixing piece is formed as snap ring.
4. rotor assembly according to claim 3, which is characterized in that the periphery of the fixing piece and the screw axis passes through
Circumferential direction is weldingly connected.
5. rotor assembly according to claim 3, which is characterized in that the periphery of the fixing piece and the screw axis passes through
Annularly spaced multiple spot welding are connected.
6. rotor assembly according to claim 3, which is characterized in that the section of the snap ring is formed as rectangle.
7. rotor assembly according to claim 3, which is characterized in that the snap ring is formed as stainless steel metal wire.
8. a kind of assembly method of rotor assembly according to any one of claim 1-7, which is characterized in that including：
S1, spring guide rail is set on screw axis and by the elongated slot of the horizontal insertion in one end of the spring guide rail screw axis
It is interior；
S2, one end that fixing piece is set on the screw axis and the fixing piece is made to compress the spring guide rail；
S3, the peripheral surface intersection of the fixing piece and the screw axis is passed through into laser welding.
9. the assembly method of rotor assembly according to claim 8, which is characterized in that in step S3, the snap ring
With the peripheral surface intersection of the screw axis along the excircle boxing one week of the screw axis.
10. the assembly method of rotor assembly according to claim 8, which is characterized in that in step S3, the snap ring
It is welded along the outer circle weekly interval of the screw axis with the peripheral surface intersection of the screw axis.
11. a kind of electric expansion valve, which is characterized in that including the rotor assembly described in any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810582309.4A CN108758058B (en) | 2018-06-07 | 2018-06-07 | Rotor assembly, assembling method and electronic expansion valve with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810582309.4A CN108758058B (en) | 2018-06-07 | 2018-06-07 | Rotor assembly, assembling method and electronic expansion valve with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108758058A true CN108758058A (en) | 2018-11-06 |
| CN108758058B CN108758058B (en) | 2021-06-11 |
Family
ID=64000508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810582309.4A Active CN108758058B (en) | 2018-06-07 | 2018-06-07 | Rotor assembly, assembling method and electronic expansion valve with same |
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| CN2846913Y (en) * | 2005-12-08 | 2006-12-13 | 浙江中宝自控元件有限公司 | Electronic expansion valve |
| CN101319747A (en) * | 2008-06-03 | 2008-12-10 | 东南大学 | Self-adapting pipe robot |
| EP2211077A2 (en) * | 2009-01-22 | 2010-07-28 | Fujikoki Corporation | Motor-driven valve |
| JP4541366B2 (en) * | 2004-12-15 | 2010-09-08 | 株式会社鷺宮製作所 | Electric control valve |
| CN101929550A (en) * | 2009-06-25 | 2010-12-29 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN102207199A (en) * | 2010-03-31 | 2011-10-05 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN202852147U (en) * | 2012-05-17 | 2013-04-03 | 何永水 | Electronic expansion valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4541366B2 (en) * | 2004-12-15 | 2010-09-08 | 株式会社鷺宮製作所 | Electric control valve |
| CN2846913Y (en) * | 2005-12-08 | 2006-12-13 | 浙江中宝自控元件有限公司 | Electronic expansion valve |
| CN101319747A (en) * | 2008-06-03 | 2008-12-10 | 东南大学 | Self-adapting pipe robot |
| EP2211077A2 (en) * | 2009-01-22 | 2010-07-28 | Fujikoki Corporation | Motor-driven valve |
| CN101929550A (en) * | 2009-06-25 | 2010-12-29 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN102207199A (en) * | 2010-03-31 | 2011-10-05 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN202852147U (en) * | 2012-05-17 | 2013-04-03 | 何永水 | Electronic expansion valve |
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| CN108758058B (en) | 2021-06-11 |
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Address after: 213100 Lingcun Industrial Zone No. 8, Luoyang Town, Changzhou City, Jiangsu Province Applicant after: Jiangsu Huayang Intelligent Equipment Co., Ltd. Address before: 213100 Lingcun Industrial Zone No. 8, Luoyang Town, Changzhou City, Jiangsu Province Applicant before: Jiangsu Huayang Electrical Appliances Co., Ltd. |
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