CN104791536B - A kind of direct-driven motor-operated valve - Google Patents
A kind of direct-driven motor-operated valve Download PDFInfo
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- CN104791536B CN104791536B CN201410026132.1A CN201410026132A CN104791536B CN 104791536 B CN104791536 B CN 104791536B CN 201410026132 A CN201410026132 A CN 201410026132A CN 104791536 B CN104791536 B CN 104791536B
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- motor
- screw mandrel
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- 238000007789 sealing Methods 0.000 claims description 30
- 230000033001 locomotion Effects 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 10
- 239000003507 refrigerant Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- VQAPWLAUGBBGJI-UHFFFAOYSA-N [B].[Fe].[Rb] Chemical compound [B].[Fe].[Rb] VQAPWLAUGBBGJI-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- 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
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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
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/042—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves with electric means, e.g. for controlling the motor or a clutch between the valve and the motor
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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
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
Abstract
The invention discloses a kind of direct-driven motor-operated valve, including the valve seat with valve pocket, motor and screw mandrel located at valve seat upper end；Screw mandrel is connected with nut by screw thread, and nut is connected with valve element；The rotor of motor and the axial location of valve seat are relatively fixed, and the upper end of screw mandrel is fixedly connected with the rotor, and valve element can move axially the valve port to be turned on and off on valve seat under the drive of nut along valve pocket；Valve element is the tubular structure with balance channel, and its periphery is provided with the seal that valve pocket is divided into two individual cavities.Said structure eliminates gear train, reduces unnecessary transmission, reduces friction loss, and response is directly reliable and sensitive；And the axial location of rotor and valve seat is fixed, i.e., the relative position of rotor and coil component is fixed in the course of work so that driving force is stable, obviously, for an equal amount of valve port, the motor size of this programme is smaller compared to background technology, disclosure satisfy that miniaturization, the requirement of Large Copacity.
Description
Technical field
The present invention relates to fluid control component technical field, more particularly to a kind of direct-driven motor-operated valve.
Background technology
The business air conditioner such as multi-connected machine or module machine, the multiple indoor set systems of outdoor unit UNICOM, each indoor set it is cold
It is required to that flow control valve is installed on matchmaker loop, for cutting off refrigerant or regulation uninterrupted.Requirement to the flow control valve
For any opening degree flow, having stable behavior can be adjusted, and because being both needed to install on the coolant loop of each indoor set, also need
Will the miniaturization of flow control valve satisfaction, the requirement of Large Copacity.
At present, using pilot-operated type control valve the flow control valve more, pilot valve is driven using motor, by main valve plug
Primary valve is opened and closed in linkage with the pilot valve.But pilot-operated type control valve, when opening primary valve, aperture area increases quickly
Greatly, flow drastically changes, that is to say, that pilot-operated type control valve can not accurate flow adjustment.
In order to accurate adjustment cold medium flux, Direct Action Type control valve can be used.A kind of existing Direct Action Type control valve, electricity
The output shaft of machine is connected by gear train with screw rod transmission, and screw mandrel is connected with nut by screw thread, and nut connects with valve element
Connect, and nut is limited, and can only be slid axially along it, can not be circumferentially rotatable；During work, electric motor starting, its output shaft hair
It is raw to rotate, screw mandrel is passed to by gear train, with the rotation of screw mandrel, nut slides axially, so that with movable valve plug along axle
To slip, and then realize the purpose of regulation valve port opening.
Due in the business air conditioner such as multi-connected machine or module machine, it is necessary to the valve port area of flow control valve is larger, so as to need
The driving force wanted is larger, according to above-mentioned Direct Action Type control valve, to obtain larger driving force, necessarily causes the size of motor to increase
Greatly so that the volume of control valve is excessive, not only increase cost, also made troubles to handling.
The rotor of existing another direct acting control valve, screw mandrel and motor is fixed, and by screw thread mating connection nut, and
The lower end of screw mandrel directly coordinates with valve element, and nut is fixed with valve seat；During work, the rotor drive screw of motor is rotated, due to silk
Bar coordinates with nut thread, and nut is fixed, so rotor can also drive screw mandrel to move axially, so as to open or close with movable valve plug
Valve closing mouthful.However, during this kind of Direct Action Type control valve work, due to rotor axial movement, so that the axial direction of rotor and coil component
Center changes, it is impossible to remain at the axial centre position of coil component, and then reduces driving force, for be opened and closed compared with
Bigbore valve port, it is also desirable to increase the size of motor.
In view of this, Direct Action Type control valve how is improved, heavy caliber can be opened and closed with the motor-driven valve core of reduced size
Valve port, be the current technical issues that need to address of those skilled in the art.
The content of the invention
, can be big with the motor-driven valve core opening and closing of reduced size it is an object of the invention to provide a kind of direct-driven motor-operated valve
The valve port of bore, so as to meet miniaturization, the requirement of Large Copacity.
In order to solve the above technical problems, the present invention provides a kind of direct-driven motor-operated valve, including the valve seat with valve pocket, it is located at
The motor and screw mandrel of the valve seat upper end；The screw mandrel is connected with nut by screw thread, and the nut is connected with valve element；
The axial location of the rotor of the motor and the valve seat is fixed, and the upper end of the screw mandrel is fixedly connected with the rotor, described
Valve element can move axially the valve port to be turned on and off on the valve seat under the drive of the nut along the valve pocket；
The valve element is the tubular structure with balance channel, and its periphery is provided with the valve pocket being divided into the close of two individual cavities
Sealing.
As above design, during work, the coil component driving rotor of motor is rotated, because the axial location of rotor and valve seat is consolidated
Determine, and screw mandrel is fixedly connected with the rotor, so rotor only drives screw mandrel to rotate, the nut coordinated with wire rod thread turns screw mandrel
It is dynamic to be converted into axial movement, so as to drive valve element to move axially, to be turned on and off valve port；Said structure eliminates gear train
System, reduces unnecessary transmission, so as to reduce power loss, response is directly reliable and sensitive；And rotor and valve seat
Axial location is fixed, i.e., the relative position of rotor and coil component is fixed in the course of work, and the driving force of motor will not be with valve element
Axial movement and change, and, valve element has balance channel, and suffered resistance is smaller during valve opening, it is clear that for an equal amount of valve
Mouthful, the motor size of this programme is smaller compared to background technology, disclosure satisfy that miniaturization, the requirement of Large Copacity.
Preferably, the screw mandrel is fixed by annular connection sheet with the rotor welding；The through hole of the annular connection sheet
Periphery axially extends to form protuberance.
Preferably, the rotor is PM rotor；The diameter ratio of the external diameter of the rotor and the valve port for 0.8~
1.8。
Preferably, the nut includes the minor diameter part and large-diameter portion coordinated with the wire rod thread；
The upper end of the valve element has the accommodating chamber for accommodating the nut large-diameter portion, and the inwall upper end of the accommodating chamber is opened up
There is ring-shaped step of the step surface towards the screw mandrel, nut cover plate is set thereon, to limit the nut and the valve element in axle
Upward relative position.
Preferably, the balance channel of the valve element include the accommodating chamber, with the axially extending bore of the accommodating chamber insertion with
And located at the air channel of the nut perisporium.
Preferably, the inwall lower end of the axially extending bore offers annular groove, is provided with screen pack in it.
Preferably, the bottom of the valve element has axially projecting portion, and riveting thereon has sealing ring, and the valve element is in fully closed
During state, the lower surface of the sealing ring fits to form sealing with the end face of the valve port.
Preferably, the longitudinal center line of the rotor is overlapped with the longitudinal center line of the coil component of the motor.
Brief description of the drawings
Fig. 1 is a kind of profile of embodiment of direct-driven motor-operated valve provided by the present invention, shows that valve element is in
The structure of full-gear；
Fig. 2 is a kind of profile of embodiment of direct-driven motor-operated valve provided by the present invention, shows that valve element is in
The structure of full off state；
The balance channel structure of core assembly when Fig. 3 shows valve element full off state；
Fig. 4 is the structural representation of upper valve holder assembly in Fig. 1
Fig. 5 is the diagrammatic cross-section of upper valve holder assembly in Fig. 1；
Fig. 6 is Fig. 5 top view；
Fig. 7 is the structural representation of core assembly in Fig. 1；
Fig. 8 is the diagrammatic cross-section of core assembly in Fig. 1；
Fig. 9 is Fig. 8 top view；
Figure 10 is the structural representation of valve seat core in Fig. 1；
Figure 11 is the structural representation of lower valve base in Fig. 1.
In Fig. 1-11：
Motor 10, coil component 11, rotor 12；Shell 20；
Valve seat 30, valve port 30a, upper valve base 31, path chamber 31a, big footpath chamber 31b, step end face 31c, bearing 311, screw mandrel
312nd, bushing 313, pad 314, annular connection sheet 315, lower valve base 32, valve seat core 321, flow regulating tank 321a, the first adapter
322nd, the second adapter 323；
Nut 41, minor diameter part 41a, large-diameter portion 41b, air channel 41c, nut cover plate 411, valve element 42, upper limit set 421,
Lower limit set 422, sealing ring 423, sliding aiding elements 423a, screen pack 424, sealing ring 425.
Embodiment
The core of the present invention is to provide a kind of direct-driven motor-operated valve, can be big with the motor-driven valve core opening and closing of reduced size
The valve port of bore, so as to meet miniaturization, the requirement of Large Copacity.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Need exist for explanation, herein it is involved it is upper and lower wait the noun of locality be with Fig. 1 into Figure 11 parts position
In figure and parts position each other is come what is defined, the clear of expression technology scheme and conveniently is intended merely to.It should manage
Solution, the noun of locality employed herein should not limit the claimed scope of the application.
Fig. 1-2 is refer to, Fig. 1 is a kind of profile of embodiment of direct-driven motor-operated valve provided by the present invention, is shown
The structure that valve element is shown in a fully open operation is gone out；Fig. 2 cuts open for a kind of embodiment of direct-driven motor-operated valve provided by the present invention
Face figure, shows that valve element is in the structure of full off state.
In the embodiment, direct-driven motor-operated valve include with valve pocket valve seat 30, be connected with valve seat 30 shell 20, be located at
The motor 10 and screw mandrel 312 of the upper end of valve seat 30；Wherein, screw mandrel 312 is connected with nut 41 by screw thread, and nut 41 is connected
There is valve element 42；The rotor 12 of motor 10 is relatively fixed in shell 20 with the axial location of valve seat 30, outside coil component 11
Shell 20 is placed on, the upper end of screw mandrel 312 is fixedly connected with rotor 12, valve element 42 can be along the valve pocket under the drive of nut 41
Move axially the valve port 30a to be turned on and off on valve seat 30；Wherein, valve element 42 is the tubular knot with balance channel
Structure, its periphery is provided with the seal that the valve pocket is divided into two individual cavities.
As above design, during work, the driving rotor 12 of coil component 11 of motor 10 is rotated, due to rotor 12 and valve seat 30
Axial location is fixed, and screw mandrel 312 is fixedly connected with rotor 12, so 12 drive screw mandrels 312 of rotor are rotated, with screw mandrel 312
The rotation of screw mandrel 312 is converted into axial movement by the nut 41 that screw thread coordinates, so as to be moved axially with movable valve plug 42, with unlatching or
Close port 30a；Said structure eliminates gear train, reduces unnecessary transmission, so as to reduce power loss, responds
It is directly reliable and sensitive；And the axial location of rotor 12 and valve seat 30 is relatively fixed, i.e., rotor 12 and coil in the course of work
The relative position of part 11 is fixed, and the driving force of motor 10 will not change with the axial movement of valve element 42, it is clear that for
An equal amount of valve port 30a, compared with background technology, the motor size of this programme is smaller, disclosure satisfy that valve body miniaturization, great Rong
The requirement of amount.
It is preferred that scheme in, the longitudinal center line of rotor 12 is overlapped with the longitudinal center line of coil component 11；It is arranged such,
The driving force that can provide motor 10 is maximized.
In the embodiment, valve seat 30 includes upper valve base 31 and lower valve base 32, and both are fixedly connected；Wherein, valve port 30a is set
In lower valve base 32.
Please also refer to the structural representation that Fig. 4-6, Fig. 4 is upper valve holder assembly in Fig. 1；Fig. 5 is upper valve holder assembly in Fig. 1
Diagrammatic cross-section；Fig. 6 is Fig. 5 top view.
As illustrated, upper valve base 31 includes the path section and big footpath section inside insertion rotor 12, screw mandrel 312 passes through upper valve base
31 inner chamber is fixedly connected with rotor 12.
In specific scheme, screw mandrel 312 is welded and fixed by annular connection sheet 315 and rotor 12；Annular connection sheet 315 is in
Ring-type, intermediate throughholes can be coated at screw mandrel 312, and outside and the rotor 12 of annular connection sheet 312 are welded and fixed, it is ensured that screw mandrel 312
With the bonding strength of rotor 12.
Further, the bore periphery of annular connection sheet 315 axially extends to form protuberance；In this way, the protuberance set
Loaded on screw mandrel 312, the contact area of annular connection sheet 315 and screw mandrel 312 can be increased, so as to strengthen screw mandrel 312 and rotor 12
Between bonding strength, it is ensured that screw mandrel 312 can be rotated under the drive of rotor 12.
In specific scheme, annular connection sheet 315 can be set to integrative-structure with rotor 12, be easy to assembling.
The inner chamber of upper valve base 31 is divided into epicoele and cavity of resorption by annular slab, and the annular slab can be set to one with upper valve base 31
Body, the upper intracavitary is provided with bearing 311, and the inner ring of the bearing 311 is fitted with the periphery wall of screw mandrel 312, outer ring with it is described on
The inwall laminating of chamber, in this way, screw mandrel 312 is relatively fixed by the axial location of bearing 311 and upper valve base 31 so that rotor 12 and
The axial location of upper valve base 31 is relatively fixed, i.e. the said structure of upper valve base 31 determines bearing 311, screw mandrel 312 and rotor 12
The relative position of three.
Further, the upper end of bearing 311 is additionally provided with bushing 313, and bushing 313 is coated at screw mandrel 312, and and screw mandrel
312 are welded and fixed, and the inner ring of bearing 311 can be prevented because the outer ring by axial force with bearing 311 is disengaged.Can also be in bushing
Overcoat pad 314 on 313, pad 314 can be welded with the upper end of upper valve base 31, further to prevent the inner ring of bearing 311 and outer
Circle is mutually disengaged.
Upper valve base 31, bearing 311, screw mandrel 312 and rotor 12 can be described as upper valve holder assembly.
It is pointed out that above-mentioned be merely given as examples a kind of side for determining rotor 12 and the axial location of valve seat 30
Formula, in practice, by other means can also fix the axial location of rotor 12 and valve seat 30.
The thread segment of screw mandrel 312 is located at the cavity of resorption of upper valve base 31, and the cavity of resorption includes path chamber 31a and big footpath chamber 31b, small
Footpath chamber 31a is oriented to for pair nut 41 being threadedly coupled with screw mandrel 312, and big footpath chamber 31b and lower valve base 32 inner chamber coordinate
Form valve pocket.
Please also refer to Fig. 7-Fig. 9, Fig. 7 is the structural representation of core assembly in Fig. 1；Fig. 8 is core assembly in Fig. 1
Diagrammatic cross-section；Fig. 9 is Fig. 8 top view.
Core assembly includes nut 41 and valve element 42, wherein, nut 41 includes the minor diameter part coordinated with the screw thread of screw mandrel 312
41a and large-diameter portion 41b, the upper end of valve element 42 has the accommodating chamber for accommodating large-diameter portion 41b, and the inwall upper end of the accommodating chamber is opened up
There is ring-shaped step of the step surface towards rotor 12, be provided with nut cover plate 411, to limit nut 41 and valve element 42 in axial direction
On relative position.
When rotor 12 is rotated, driving screw mandrel 312 to rotate, and driving the nut 41 to move up, due to the large-diameter portion of nut 41
41b end is interfered with nut cover plate 411, is moved upwardly together so as to band movable valve plug 42, it is to avoid nut 41 departs from
Valve element 42.
When rotor 12 is rotated, driving screw mandrel 312 to rotate, and driving the nut 41 to move down, nut 41 can be pushed directly on
Valve element 42 is moved downwardly together, until close port 30a.
It is pointed out that the rotor 12 of motor 10 can be rotated clockwise or turned counterclockwise under the driving of coil component 11
It is dynamic, so as to drive nut 41 to move up or move down；In actual setting, when can be set as rotor 12 and rotating clockwise, band
Dynamic nut 41 is moved up, when rotor 12 is rotated counterclockwise, and drives nut 41 to move down；It can certainly be set as that rotor 12 turns clockwise
When dynamic, drive nut 41 to move down, when rotor 12 is rotated counterclockwise, drive nut 41 to move up.
The minor diameter part 41a of nut 41 stretches into the path chamber 31a of the cavity of resorption of upper valve base 31, under the drive of screw mandrel 312, nut 41
Minor diameter part 41a moved axially along the path chamber 31a, guide effect is played in the axial movements of the path chamber 31a to nut 41,
Glanced off when avoiding nut 41 from moving axially, sealing property of the influence valve element 42 to valve port 30a.
Obviously, to ensure that the rotation of screw mandrel 312 can be converted into axial movement by nut 41, axially moved with band movable valve plug 42
It is dynamic, locating part is additionally provided with, to limit circumferentially rotating for nut 41.
The setting form of locating part can be a variety of, specific in the program, can set the minor diameter part 41a of nut 41
It is non-circular column structure for cross section, square column as shown in Figure 7, correspondingly, the path chamber 31a of upper valve base 31 and institute
State square column adaptation.Certainly, in actual setting, the minor diameter part 41a of nut 41 can also be set to cross section non-for other
Circular column structure, such as pentagon, path chamber 31a is adapted to it, can also set snap ring in path chamber 31a inwall,
The endoporus of snap ring is set to non-circular, and the minor diameter part 41a of nut 41 is set to the cross section that the snap ring coordinates be non-circular post
Body；In addition to this it is possible to set circumferential stopper slot in the bottom of the accommodating chamber, the large-diameter portion 41b of nut 41 bottom is corresponding
Ground is arranged at the circumferential spacing preiection that circumferential stopper slot coordinates；Above only as the several of the locating part that circumferentially rotates of limitation nut 41
Plant example.
Please also refer to the structural representation that Figure 10-11, Figure 10 is valve seat core in Fig. 1；Figure 11 is the knot of lower valve base in Fig. 1
Structure schematic diagram.
Be installed with valve seat core 321 in lower valve base 32, valve seat core 321 has a core cavity, and its perisporium be provided with it is one or more
Flow regulating tank 321a；Valve pocket is divided into the first cavity and the second cavity around the first cavity by valve seat core 321, it is clear that two
Individual cavity can be connected by flow regulating tank 321a；It is appreciated that first cavity is the core cavity of valve seat core 321；Wherein,
Second cavity is connected with the first adapter 322, and the first cavity is connected by valve port 30a with the second adapter 323.
During cold medium flux regulation, the stability under loading of valve seat core 321, multiple flow regulating tank 321a can edge
The perisporium of valve seat core 321 is evenly arranged.
Further, flow regulating tank 321a can be set to axially downwardly tapered knot of the circumferential lengths along valve seat core 321
Structure, as shown in Figure 10, this kind of structure can make the cold medium flux of low discharge scope adjust more accurate.Certainly, actual setting
When, flow regulating tank 321a is set to other structures, as square, circular or ellipsoidal structure is also feasible, simply compared
Regulation accuracy in the range of aforementioned structure, low discharge is relatively low.
The valve element 42 being connected with nut 41 is in valve pocket, specifically, in first cavity, when valve element 42 is in
Full off state, during close port 30a, the side wall of valve element 42 can block flow regulating tank 321a so that cut off the first cavity and
The connection of second cavity, when being moved up under drive of the valve element 42 in nut 41, is gradually opened flow regulating tank 321a, and change stream
Regulating tank 321a circulation area is measured, so that the first cavity and the connection of the second cavity, and adjust cold medium flux.Obviously, valve element
Need to keep sealing between 42 and valve seat core 321.
Understand with reference to Fig. 3, in specific scheme, the core cavity of valve seat core 321 is set to stepped hole, stepped hole formation direction
The step surface of upper valve base 31, the upper end of valve seat core 321 is fitted with upper limit set 421, and the upper end of upper limit set 421 has annular
Radial direction boss, the radial direction boss is overlapped in valve seat core 321 towards the upper surface of upper valve base 31, in this way, under upper limit set 421
End face is the step surface formation mounting groove towards valve port 30a end face, the madial wall of valve seat core 12 and above-mentioned valve seat core 321,
Sealing ring 423 can be set in the mounting groove.
Further, lower limit can also be set to cover 422 between the step surface of sealing ring 423 and the valve seat core 321.By
Up-small and down-big structure is usually arranged as in valve element 42, to ensure the sealing to valve port 30a, for meet valve element 42 assembling will
Ask, there is fit-up gap between the path through hole and valve element 42 of valve seat core 321.Lower limit set 422 setting can avoid due to
The presence of fit-up gap, sealing ring 423 departs from the mounting groove in the reciprocating motion of valve element.
Further, the outer peripheral face of sealing ring 423 is provided with sliding aiding elements 423a, can be by sliding aiding elements 423a and sealing ring
423 are set to one, i.e., sliding aiding elements 423a is coated on to the periphery of sealing ring 423, can be also separately provided；When first cavity and
When second cavity has pressure differential, pressure makes the crimp of sealing ring 423, and sliding aiding elements 423a is due to being coated on sealing ring
423 periphery, can easily capture the extruding force of sealing ring 423, so as to be fitted with the periphery wall of valve element 42, it is ensured that sealing
Property, while sliding aiding elements 423a setting can also reduce frictional resistance when valve element 42 is moved axially.
The upper limit set 421 also needs to keep being relatively fixed between valve seat core 321；, can be in upper valve in the embodiment
The bottom of the big footpath section of seat 31 sets axial convex portion, forms the annular step surface towards lower valve base 32, upper valve base 31 passes through the axle
Lower valve base 32 is plugged in convex portion, its annular step surface is fitted with the upper surface of lower valve base 32, and the lower end of the axial convex portion
Upper limit is covered into 421 upper surfaces for being pressed in valve seat core 321；Moreover, this kind of structure setting of upper valve base 31 is also easy to ensure it
With the axiality of lower valve base 32.It is of course also possible to fixed upper limit position set 421 and valve seat core 321 by other means, such as welding or
The modes such as threaded connection.
When valve element 42 is in full off state, it should also ensure that its sealing between valve port 30a.
In the embodiment, the bottom of valve element 42 has axially projecting portion, and riveting thereon has sealing ring 425.At valve element 42
When full off state, the lower surface of sealing ring 425 fits to form sealing with valve port 30a.Obviously, the outer diameter of sealing ring 425
More than valve port 30a diameter.
Further, the rotor 12 of the motor 10 of the direct-driven motor-operated valve is PM rotor, can specifically use rubidium iron
Boron magnetic steel material or anisotropic ferrite material make, in this way, when valve element 42 is in full off state, motor 10 is powered off, by
Be PM rotor in rotor 12, motor 10 has location torque in the power-off state, it can be ensured that screw mandrel 312 and nut 41 it
Between relative position, it is to avoid both slide, therefore, motor 10 power-off in the state of, can further ensure that valve element 42 and valve
Sealing between mouth 30a, it is to avoid interior leakage occurs.
In order that motor 10 has certain location torque, the diameter ratio of the external diameter and valve port 30a of rotor 12 is preferably
0.8~1.8.
Further, valve element 42 has the axially extending bore with the accommodating chamber insertion, and the perisporium of nut 41 has air channel
Accommodating chamber described in 41c, i.e. valve element 42 balance channel bag, the axially extending bore with the accommodating chamber insertion and located at nut 41 weeks
The air channel 41c of wall；In this way, when valve element 42 is in full off state, the pressure balance of the upper and lower side of valve element 42 can combine Fig. 3 and understand,
Fig. 3 shows the structural representation of valve port full off state lower valve core assembly two-way pressure balance.As shown by arrows in FIG., second connect
Pipe 323 is connected by valve port 30a with the axially extending bore of valve element 42, and connects upper valve base 31 by the air channel 41c of nut 41
Big footpath chamber 31b, the difference force that valve element 42 is subject to is smaller, when opening valve port 30a, it is only necessary to less driving force, i.e., with smaller
Motor 10 can drive larger valve element 42, further direct-driven motor-operated valve is minimized.
Further, the inwall lower end of the axially extending bore of valve element 42 offers annular groove, is provided with screen pack 424 in it；
The setting of screen pack 424 brings impurity the axially extending bore of valve element 42 into and causes screw mandrel 312 and nut when avoiding refrigerant flowing
41 screw threads coordinated are stuck.
In addition, the path chamber 31a of the cavity of resorption of upper valve base 31 of the direct-driven motor-operated valve and big footpath chamber 31b connectivity parts formation direction
Valve port 30a step end face 31c, the distance between step end face 31c and valve port 30a define the axial movement of valve element 42 away from
From.As shown in figure 1, when valve element 42 is shown in a fully open operation, flow regulating tank 321a standard-sized sheets, the first adapter 322 is adjusted by flow
Section groove 321a is connected with the second adapter 323, and now, the upper surface of valve element 42 is abutted with step end face 31c；As shown in Fig. 2 working as valve
When core 42 is in full-shut position, its sealing ring 425 fits to form sealing with valve port 30a, the first adapter 322 and the second adapter 323
Do not connect, refrigerant circulation is cut off completely.
The direct-driven motor-operated valve can be realized and two-way circulated, and be understood with reference to Fig. 1 and Fig. 2, and the arrow in Fig. 1 and Fig. 2 shows
The flow direction of refrigerant；Wherein, solid arrow shows that refrigerant is flowed into from the first adapter 322, the second adapter 323 outflow, dotted arrow
Show that refrigerant is flowed into from the second adapter 323, the first adapter 322 outflow.
Direct-driven motor-operated valve provided by the present invention is described in detail above.Specific case pair used herein
The principle and embodiment of the present invention is set forth, and the explanation of above example is only intended to the method for helping to understand the present invention
And its core concept.It should be pointed out that for those skilled in the art, before the principle of the invention is not departed from
Put, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the guarantor of the claims in the present invention
In the range of shield.
Claims (7)
1. a kind of direct-driven motor-operated valve, including the valve seat (30) with valve pocket, the motor (10) located at the valve seat (30) upper end
And screw mandrel (312)；The screw mandrel (312) is connected with nut (41) by screw thread, and the nut (41) is connected with valve element
(42)；Characterized in that, the rotor (12) of the motor (10) and the axial location of the valve seat (30) are relatively fixed, the silk
The upper end of bar (312) is fixedly connected with the rotor (12), and the valve element (42) being capable of edge under the drive of the nut (41)
Valve port (30a) of the valve pocket axial movement to be turned on and off on the valve seat (30)；The valve element (42) be with
The tubular structure of balance channel, and its periphery is provided with the seal that the valve pocket is divided into two individual cavities；
The nut (41) includes the minor diameter part (41a) and large-diameter portion (41b) coordinated with the screw mandrel (312) screw thread；
The upper end of the valve element (42) has the accommodating chamber for the large-diameter portion (41b) for accommodating the nut (41), the valve element (42)
Balance channel include the accommodating chamber, with the axially extending bore of the accommodating chamber insertion and located at the nut (41) perisporium
Air channel (41c).
2. direct-driven motor-operated valve as claimed in claim 1, it is characterised in that the screw mandrel (312) passes through annular connection sheet
(315) it is welded and fixed with the rotor (12)；The bore periphery of the annular connection sheet (315) axially extends to form protrusion
Portion.
3. direct-driven motor-operated valve as claimed in claim 1, it is characterised in that the rotor (12) is PM rotor；It is described
The external diameter of rotor (12) is 0.8~1.8 with the diameter ratio of the valve port (30a).
4. the direct-driven motor-operated valve as described in any one of claims 1 to 3, it is characterised in that the inwall upper end of the accommodating chamber
Step surface is offered towards the ring-shaped step of the rotor (12), nut cover plate (411) is set thereon, to limit the nut
And the valve element (42) relative position in the axial direction (41).
5. direct-driven motor-operated valve as claimed in claim 1, it is characterised in that the inwall lower end of the axially extending bore offers ring
Shape groove, is provided with screen pack (424) in it.
6. direct-driven motor-operated valve as claimed in claim 5, it is characterised in that the bottom of the valve element (42) has axially projecting
Portion, thereon riveting has a sealing ring (425), when the valve element (42) is in full off state, the lower surface of the sealing ring (425) with
The end face of the valve port (30a) fits to form sealing.
7. direct-driven motor-operated valve as claimed in claim 6, it is characterised in that the longitudinal center line of the rotor (12) with it is described
The longitudinal center line of the coil component (11) of motor (10) is overlapped.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410026132.1A CN104791536B (en) | 2014-01-20 | 2014-01-20 | A kind of direct-driven motor-operated valve |
| EP15737429.9A EP3098494B1 (en) | 2014-01-20 | 2015-01-20 | Direct-action-type electrically-operated valve and assembly method therefor |
| JP2016524052A JP6219511B2 (en) | 2014-01-20 | 2015-01-20 | Direct-acting motor-operated valve and mounting method thereof |
| EP18157478.1A EP3343080A1 (en) | 2014-01-20 | 2015-01-20 | Direct-action-type electrically-operated valve and assembly method therefore |
| KR1020167009203A KR101823927B1 (en) | 2014-01-20 | 2015-01-20 | Direct-action-type electrically-operated valve and assembly method therefor |
| US14/917,254 US10352467B2 (en) | 2014-01-20 | 2015-01-20 | Direct-action-type electrically-operated valve and assembly method therefor |
| PCT/CN2015/071065 WO2015106724A1 (en) | 2014-01-20 | 2015-01-20 | Direct-action-type electrically-operated valve and assembly method therefor |
| KR1020187002550A KR101843460B1 (en) | 2014-01-20 | 2015-01-20 | Direct-action-type electrically-operated valve and assembly method therefor |
| JP2017186257A JP6574467B2 (en) | 2014-01-20 | 2017-09-27 | Direct-acting motor-operated valve and mounting method thereof |
| US15/919,158 US20180202570A1 (en) | 2014-01-20 | 2018-03-12 | Direct-action-type electrically-operated valve and assembly method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410026132.1A CN104791536B (en) | 2014-01-20 | 2014-01-20 | A kind of direct-driven motor-operated valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104791536A CN104791536A (en) | 2015-07-22 |
| CN104791536B true CN104791536B (en) | 2017-09-01 |
Family
ID=53556579
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410026132.1A Active CN104791536B (en) | 2014-01-20 | 2014-01-20 | A kind of direct-driven motor-operated valve |
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| Country | Link |
|---|---|
| CN (1) | CN104791536B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296222A (en) * | 2018-03-23 | 2019-10-01 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
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| JP6721175B2 (en) * | 2016-06-13 | 2020-07-08 | 株式会社不二工機 | Motorized valve |
| WO2018012157A1 (en) * | 2016-07-14 | 2018-01-18 | 昭和電工株式会社 | Melanin production inhibitor, skin-lightening agent, fibroblast cell activator, collagen and/or elastin production promotor, and wrinkle-improving agent |
| CN108730553B (en) * | 2017-04-17 | 2020-04-28 | 浙江三花汽车零部件有限公司 | Electric valve |
| CN109695739B (en) * | 2017-10-24 | 2021-12-07 | 浙江盾安机械有限公司 | Direct-acting three-way valve |
| CN109723826B (en) * | 2017-10-27 | 2023-02-28 | 浙江三花商用制冷有限公司 | Electric valve |
| WO2019148693A1 (en) * | 2018-01-31 | 2019-08-08 | 浙江三花制冷集团有限公司 | Electric valve and manufacturing method thereof |
| CN110296267B (en) * | 2018-03-23 | 2021-02-26 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN110296258B (en) * | 2018-03-23 | 2020-12-08 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN111365466B (en) * | 2018-12-25 | 2022-09-06 | 浙江盾安禾田金属有限公司 | Electronic expansion valve and air conditioning system using same |
| CN111379890A (en) * | 2018-12-30 | 2020-07-07 | 浙江三花智能控制股份有限公司 | Electromagnetic driving device and gas proportional valve with same |
| CN111765251B (en) * | 2019-03-30 | 2023-08-01 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN111765252B (en) * | 2019-04-02 | 2021-12-21 | 浙江三花制冷集团有限公司 | Electric valve |
| CN111765258B (en) * | 2019-04-02 | 2022-01-28 | 浙江三花制冷集团有限公司 | Electric valve |
| CN112879576B (en) * | 2019-11-29 | 2023-01-06 | 杭州三花研究院有限公司 | Valve device |
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| CN104791536A (en) | 2015-07-22 |
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