CN107956911B - A kind of solenoid valve - Google Patents
A kind of solenoid valve Download PDFInfo
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- CN107956911B CN107956911B CN201610895826.8A CN201610895826A CN107956911B CN 107956911 B CN107956911 B CN 107956911B CN 201610895826 A CN201610895826 A CN 201610895826A CN 107956911 B CN107956911 B CN 107956911B
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- protrusion
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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
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- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a kind of solenoid valves, including pedestal, valve component, core assembly, the second core assembly；The solenoid valve further includes connection chamber, one orifice of the connection chamber and solenoid valve, second core assembly is provided with protrusion, the protruding part is arranged in the position of the relatively described connection chamber of second core assembly or the protrusion towards the connection chamber, and the protrusion is less than the connection chamber；In one of working condition of the solenoid valve, the protruding part is predominantly located in the connection chamber in the connection chamber or the protrusion.The technical program can be applied to step-by-step solenoid valve or guide electromagnetic valve, by the way that protrusion is arranged in core assembly, reduce the pressure difference of electromagnetism valve events suitably.
Description
Technical field
The present invention relates to fluid control technology fields, such as flow path control solenoid valve, especially a kind of guide electromagnetic valve
Or step-by-step solenoid valve.
Background technique
Some flow paths such as refrigerating circulatory device generallys use the control whether solenoid valve is connected as fluids such as change refrigerants
Component, and some systems for needing biggish circulation can use the solenoid valve or step-by-step solenoid valve of some pilot-operated type structures,
Whether being first connected a lesser valve port or pilot valve mouth by electromagnetic force, then pass through the pressure between the import of valve, outlet
Power difference makes relatively large valve port i.e. primary valve on and off again, how to guarantee solenoid valve in relatively small pressure difference in this way
In the case of can work normally in other words while so that solenoid valve is worked under specific pressure difference, the pressure drop of runner and the body of valve body
Product can be also held essentially constant, and be the technical task for improving existing solenoid valve.
Summary of the invention
The object of the present invention is to provide a kind of solenoid valve, solenoid valve uses following technical scheme:
A kind of solenoid valve, including pedestal, valve component, core assembly；The core assembly includes movable core, the first valve
Core, the core assembly are set to the chamber of the valve component, and the movable core can be under external force along axial direction certain
Movement in the distance of range i.e. its stroke；The solenoid valve further includes the second core assembly, and second core assembly includes the
Two valve hole parts, the solenoid valve have at least two interfaces, two of them interface respectively as the solenoid valve import with
Outlet, the solenoid valve further include connection chamber, the connection chamber and one of orifice, the second core assembly setting
There are protrusion, valve opening, position or the protrusion of the protruding part in the relatively described connection chamber of second core assembly
Portion is arranged towards the connection chamber or the protrusion partially protrudes into the connection chamber setting, and the protrusion is less than the company
Cavity；The valve opening perforation setting, a part of the valve opening close to this side of protrusion are located on the inside of the protrusion, the valve
Hole is located at the connection chamber towards the connection chamber or the valve opening part；In one of work shape of the solenoid valve
State, the protruding part are predominantly located in the connection chamber in the connection chamber or the protrusion.
Second valve hole part may include class piston piece, valve port matching piece；The valve port matching piece passes through position restrainer
Structure and the class piston piece realize relatively fixed or limit, and the protrusion and the valve port matching piece are fixedly installed or opposite limit
Position setting；The solenoid valve includes valve port portion, and the valve port matching piece has to be cooperated sealing and realize electromagnetism with the valve port portion
The sealing fit portion that valve opens or closes, the protruding part is in the inside of the sealing fit portion, and the protrusion is opposite
The sealing fit portion is provided projectingly；Connection chamber setting described in the valve opening substantially face.
The sealing fit portion of the valve port matching piece is arranged with respect to valve port portion, the opposite connection chamber setting of the protrusion or portion
Quartile is in the connection chamber, and defining the protrusion close to the position of the valve port matching piece is head end, and the protrusion is opposite
Position far from the valve port matching piece is end, and the distal portion of the protrusion and the inner wall part distance L0 of connection chamber are big
In the stroke h that can be acted equal to second core assembly, and meet: 4*D1*h < (D22-d22)；
Wherein, D1: the valve port portion corresponds to the diameter that valve port matching piece realizes effective sealing of cooperation sealing position；
D2: the diameter or equivalent diameter of the connection chamber:
D2: the diameter of the inner wall of the lower end diameter of the protrusion or the distal portion of protrusion from connection chamber most nearby；
L0: the terminal part of the distal portion of the protrusion and the horizontal distance of the inner wall part that is connected to chamber or the protrusion
Position with the minimum range for the inner wall part for being connected to chamber；
H: the stroke that second core assembly can act.
Defining the stroke that the movable core can move axially is first stroke, and defining second core assembly can
The stroke of movement is second stroke h, and the second stroke h of second core assembly is less than the first stroke of the movable core；
And axial direction of the effective length L of the protrusion axial direction, that is, protrusion end from the valve port matching piece
Height L can be more than or equal to axial direction distance h:L >=h of the valve port matching piece from the valve port portion.
Second valve hole part may include class piston piece, valve port matching piece, locating part, described in the locating part limitation
Valve port matching piece or the fixed valve port matching piece, the locating part are fixed or are limited by bending part or pressure contact portion, described prominent
The portion of rising includes locating part or including part locating part；The locating part includes flow-guiding structure or transition structure outwardly, the electricity
Magnet valve includes valve port portion, the relatively described valve port matching piece setting in valve port portion；The valve port portion is to the inner wall part for being connected to chamber
The structure to smoothly transit；The flow-guiding structure of the locating part or the distal portion A of transition structure and the inner wall part for being connected to chamber
Horizontal distance L1, meet:
Wherein:
D2: the diameter or equivalent diameter of the connection chamber:
L1: the flow-guiding structure of locating part or the distal portion A of transition structure and the inner wall part for being connected to chamber it is horizontal away from
From；
L2: valve port portion cooperates the sealing C of sealing and the horizontal distance for the inner wall part for being connected to chamber；
H: the stroke that second core assembly can act.
Second valve hole part also may include class piston piece, valve port matching piece, and the valve port matching piece passes through limit
Mechanism is fixed or is limited with the class piston piece, and the protrusion includes a part and position-limit mechanism of the valve port matching piece
A part；
The solenoid valve includes valve port portion, the relatively described valve port matching piece setting in the valve port portion；The valve port portion is to institute
The inner wall part for stating connection chamber is the structure to smoothly transit；
The valve port matching piece include sealing fit portion with outwardly flow-guiding structure or transition structure, sealing fit portion and institute
It states the cooperation sealing of valve port portion and realizes solenoid valve and open or close；
The flow-guiding structure of the valve port matching piece or the distal portion A of transition structure and the water of the inner wall part for being connected to chamber
Flat distance L1, meets:
Wherein:
D2: the diameter or equivalent diameter of the connection chamber:
L1: the flow-guiding structure of valve port matching piece or the distal portion A of transition structure and the water of the inner wall part for being connected to chamber
Flat distance；
L2: valve port portion cooperates the sealing C of sealing and the horizontal distance for the inner wall part for being connected to chamber；
H: the stroke that second core assembly can act.
The flow-guiding structure or transition structure of the locating part or valve port matching piece mentioned in this specification, refer to limiting
The outer surface that this part of part or valve port matching piece may be contacted with fluid is not provided with such as step-like or acute angle-shaped structure, this
Sample makes fluid flowing will not change dramatically.
Second core assembly further includes elastomeric element, and elastomeric element includes elastic element and split ring, the opening
Ring include opening portion and at least one towards inner opening groove, the split ring have relative smooth outside wall portions, the elasticity
Element is set to the groove of the split ring；The side of second valve hole part is additionally provided with outside groove, the elasticity
Component is limited in the groove of second valve hole part.
The valve component includes casing, the lid for cooperating with the pedestal or fixing, the lid and the set
Pipe is by being welded and fixed, and the movable core is located in described sleeve pipe, and the inner wall part of the movable core and described sleeve pipe is in axis
It is slidably matched to direction, the valve component is connected through a screw thread with pedestal and fixes or by being welded and fixed or being set by circlip card
It is fixed；The lid has a chamber, and the main body section of second core assembly is in the chamber of the lid, second spool
The main part of component can slide under external force in the intracavitary of the lid, and second valve hole part is less than the lid
Chamber, the elastomeric element is contacted with the inner wall part of the chamber of the lid or localized contact.Here the second valve hole part is less than described
The chamber of lid refers to that the second valve hole part is slightly less than chamber and can freely slide axially intracavitary；And elastomeric element and chamber is interior
It is intracavitary without free dropping that wall portion contact can be such that the second core assembly is located at, i.e. the inner wall of the second core assembly and chamber exists
Certain frictional force.
It is provided with the first valve seat with the cooperation of the first spool of the iron core member on second core assembly, described the
One valve seat is located at the opposite side of the protrusion, and the valve opening penetrates through first valve seat and protrusion, first valve seat
It is oppositely arranged with first spool；The pedestal include two interfaces: first interface, second interface, wherein first interface with
The connection chamber connection, the pedestal includes main valve chamber, and the main valve chamber is connected to the second interface；In addition pedestal further includes
Main valve seat, main valve seat are equipped with the valve port portion；The axis of the connection chamber is parallel with the axis of the valve opening or substantially overlaps.
Above-mentioned technical proposal is by being arranged protrusion in the second core assembly and stretching protrusion towards connection chamber or part
Enter and be connected to chamber, and in the valve opening of the second core assembly setting perforation, valve opening is made to be located at protrusion close to a part of this side of protrusion
On the inside of portion, the other side of such second core assembly can be connected to connection chamber by valve opening makes second in solenoid valve action process
The pressure of the chamber of the other side of core assembly is closer with the pressure for that interface for being connected to chamber connection, and makes the second spool group
The pressure of this side of part is relatively close to the pressure of another interface, is easier to make the two sides holding of the second core assembly to act institute in this way
The pressure difference needed, such solenoid valve can be worked normally in relatively small pressure difference makes solenoid valve specific in other words
While work under pressure difference, the limited volume with valve body of the pressure drop rise of runner can be held essentially constant.
Detailed description of the invention
Fig. 1 is a kind of schematic cross-sectional view of the solenoid valve provided by a kind of specific embodiment of the present invention in working condition.
Fig. 2 is the partial enlargement diagram of solenoid valve shown in Fig. 1.
Fig. 3 is the schematic diagram of the second valve hole part of solenoid valve shown in Fig. 1.
Fig. 4 is the schematic top plan view of the second valve hole part of solenoid valve shown in Fig. 1.
Fig. 5 is the stereoscopic schematic diagram of the class piston piece of the second valve hole part of solenoid valve shown in Fig. 1.
Fig. 6 is the schematic diagram of the split ring of the elastomeric element of solenoid valve shown in Fig. 1.
Fig. 7 is the schematic diagram of another embodiment of the second valve hole part.
Fig. 8 is a kind of schematic cross-sectional view of working condition of solenoid valve of another embodiment.
Fig. 9 is the partial enlargement diagram of solenoid valve shown in Fig. 8.
Figure 10 is the schematic diagram of the second core assembly of solenoid valve shown in Fig. 8.
Figure 11 is the schematic diagram of another second core assembly.
Figure 12 is the schematic cross-sectional view when solenoid valve of the third embodiment is opened.
Specific embodiment
The technical program can be applied to solenoid valve open in usual, be also possible to what normally closed solenoid valve was opened when being powered
Solenoid valve, in addition can be also used for a kind of suitching type the i.e. solenoid valve of solenoid valve the second valve hole part can two positions it
Between the solenoid valve that acts.Technical solution of the present invention is illustrated with reference to the accompanying drawing, wherein Fig. 1 is that the present invention is a kind of specific
The schematic cross-sectional view of solenoid valve provided by embodiment, the solenoid valve of present embodiment is opened at this time, import 22 and outlet 23
Between be connected, Fig. 2 is the partial enlargement diagram of solenoid valve shown in Fig. 1, and Fig. 3 is the schematic diagram of the second valve hole part, and Fig. 4 is the
The schematic top plan view of two valve hole parts, Fig. 5 are the schematic diagrames of the class piston piece of the second valve hole part, and Fig. 6 is opening for elastomeric element
The schematic diagram of choma.
As shown, solenoid valve include pedestal 20, electromagnetic coil (not shown), valve component 40, core assembly 10,
Second core assembly 30.Core assembly 10 includes iron core 12, the first spool 14 that can be acted under external force, in addition it can
Including the locating part etc. for limiting the first spool 14, core assembly 10 is located at the chamber of valve component 40, and iron core 12 can be in external force
It is to act in its stroke in a certain range of distance that it is axial, which to act on lower edge, to make core assembly act, even if the first spool
It is acted with iron core 12, and realizes and the first valve port is opened or closed.In addition the position of core assembly may be reversed setting, i.e.,
Another iron core such as secured core be set in the middle part of casing such as with casing fixed setting, and movable core be relatively distant from the first spool this
Side setting, movable core moves downwards when movement, and band movable valve plug acts downwards, can be applied to normally open type magnetic valve in this way
Deng other different occasions.
Solenoid valve further includes the second core assembly 30, and the second core assembly 30 includes elastomeric element and the second valve hole part,
Elastomeric element includes radial flexible elastic element 35 and split ring 34, and split ring 34 has an opening portion 343 and recessed
The outside wall portions 341 of slot 342 and relative smooth, split ring 34 can use the relatively good material of greasy property, such as its material packet
It includes lubriation material and plastic material to be process through injection molding or other methods, elastic element 35 is set to groove 342, elastic element
35 radial directions have certain elastic force, and elastic element is band made of metal cyclic annular knot jaggy in the present embodiment
Structure；The compression of elastic element 35 is placed on groove 342, and such elastic element 35 is arranged in the recessed of 34 relative inner of split ring after opening
Slot 342.Second core assembly 30 or its major part are the chamber for the lid that main part is set to valve component 40, due to opening portion
343 setting, elastomeric element are slightly larger than the chamber of the lid of valve component 40, but elastomeric element diameter in free state outer diameter or part
To the chamber that can become smaller in a certain range and elastomeric element is made to be placed in lid, and contacted with the inner wall part of chamber.
Second valve hole part of the present embodiment includes class piston piece 31, valve port matching piece 32, locating part 33；Locating part 33 is logical
The limiting section 313 for crossing class piston piece 31 realizes limit, and valve port matching piece 32 realizes relatively fixed or limit by locating part 33,
It for the position-limit mechanism that valve port matching piece 32 is fixed or limits include locating part and limiting section 313 i.e. in the embodiment, specific group
Valve port matching piece 32, locating part 33 can be set in the corresponding position of class piston piece 31, then being somebody's turn to do class piston piece 31 when dress
End bending or the methods of punching press or crimping make Leading Edge Deformation and form limiting section 313, to realize the assembling of three.Class piston
Part 31 has the side 316 cooperated with the inner wall of the chamber of the lid of valve component 10, the first valve seat with the cooperation of the first spool 14
311, side 316 is slightly less than the inner wall of the chamber of lid 15, and there is class piston piece 31 valve opening 312 to be connected to its upper and lower two sides, class piston
The side of part 31 is additionally provided with groove 314, and class piston piece 31 is provided with a ring-type at the position of relatively close first spool side
Structure 318, class piston piece 31 also there is at least one notch section as shown to be two notch sections 319 in cyclic structure 318；Bullet
Property component can limit the groove 314 for being set to the side of class piston piece 31.First valve seat 311 and the first spool iron core in other words
Component is oppositely arranged, and when the first spool is abutted with the first valve seat, the first valve port is not turned on, and such valve opening 312 will not be connected to second
Second chamber 152 of the relatively close core assembly side of core assembly and the first chamber of the second core assembly and the second chamber opposite side
151。
System do not need the solenoid valve open when, solenoid valve no power, between secured core 11 and core assembly 10 by
In the effect of the resultant forces such as the elastic force effect of elastic element 13 or elastic force combination gravity, core assembly 10 moves downwards or iron core group
Part 10 be located at lower limit position in this way both be it is separated, the first spool 14 is acted or is located below downwards in company with core assembly
And contact the sealing 1411 of the first spool 14 with the first valve seat 311 and be not turned on the valve port of the first valve seat 311, such
The of the second chamber 152 and the second core assembly 30 and pedestal and the valve component formation that two core assemblies 30 and valve component are formed
It will not be connected to substantially by valve opening 312 between one chamber 151, pass through balance hole 317, opening between the first chamber 151 and the second chamber 152
The equal connection in the opening portion 343 of ring 34, since balance hole 317 is smaller, the opening portion 343 after assembly is relatively narrow, the first chamber 151 and second
It can slowly be balanced when between chamber 152 if there is pressure difference；Valve opening 312 will not be connected to that the second core assembly is opposite to be leaned at this time in other words
Nearly second chamber 152 of core assembly side and the first chamber 151 of the second core assembly and the second chamber opposite side.Core assembly to
When lower section acts, the second core assembly can under the action of the resultant forces such as elastic force combination self gravity that core assembly is passed on, to
Lower section is moved to 211 direction of valve port portion, until the valve port matching piece 32 of the second core assembly 30 is abutted with valve port portion 211, is had
Body, the sealing fit portion 321 that can be valve port matching piece 32 abuts and realizes the closing of solenoid valve, valve port cooperation with valve port portion
The sealing fit portion 321 of part 32 is prominent lower than the sealing fit portion 321 of the lower end 315 of class piston piece valve port matching piece 32 in other words
For the lower end 315 of class piston piece；It is connected to chamber 24 when sealing fit portion 321 is abutted with valve port portion to be connected to valve opening 312, is connected to
Chamber 24 is connected to the i.e. first interface in outlet 23, and main valve chamber 213 is that second interface is connected to import 22, and the second chamber 152 passes through balance
Hole 317, the opening portion 34 of split ring 34 and 22 indirect communication of import；But connection chamber 24 will not be connected with the second chamber by valve opening 312
It is logical, and the opening portion 343 of balance hole 317, split ring 34 is arranged at the opposite exterior lateral sides of sealing fit portion, i.e., balance hole 317, open
The opening portion 343 of choma 34 not be connected to chamber 24 be connected to, so solenoid valve close.Valve port portion can be a part of pedestal i.e.
With the structure of pedestal one, in addition it is also possible to be combined to pedestal and the mode fixed with pedestal.
If system needs the solenoid valve to open, solenoid valves, iron core 12 is overcome secured core 11 by the effect of electromagnetic force
The influence of the resultant forces such as gravity in conjunction with the elastic force or elastic force of elastic element 13 between core assembly 10, core assembly 10 is upwards
It is moved to 11 direction of secured core until core assembly 10 is abutted with secured core 11, the first spool 14 is in company with core assembly 10
Act upwards and the sealing 1411 of the first spool 14 made to leave the first valve seat 311, the first valve seat 311 no longer with the first spool
Contact, the conducting of the first valve port, the second chamber 152 that such second core assembly 30 and valve component are formed be connected between chamber 24 it is logical
The connection of valve opening 312 is crossed, since main valve chamber 210 is connected to import 22, the pressure of main valve chamber is approaching or approximately equal at import 22
Pressure, and be connected to chamber 24 and be connected to outlet 23, the pressure of such second chamber 152 is relatively close to the pressure at outlet 23, in this way
There are in the case where pressure difference between the import of solenoid valve, outlet, at part, that is, main valve chamber 21 below the second core assembly
Pressure to be greater than above the second core assembly be pressure at the second chamber 152, the effect that the second core assembly is under pressure overcomes
Upper direction of the influence of the resultant forces such as the frictional force and gravity in elastomeric element and base vivo wall portion to diagram, such second spool group
Part 30 leaves valve port portion 211, and primary valve is opened, until the top 318 of the class piston piece 31 of the second core assembly 30 is this implementation
Two semicircular structures of example are abutted with the top 153 of the chamber of lid 15, above and below the second core assembly of the connection of valve opening 312 at this time
Two sides, in other words valve opening 312 be connected to the second chamber 152 be connected to chamber 24, the outlet 23 of solenoid valve pass through with import 22 be connected to chamber 24,
Space between valve port portion 211 and the valve port matching piece 32 of the second core assembly 30 is connected to.The second of second core assembly at this time
Chamber 152 is also connected to by balance hole 317 with the first chamber 151, while the notch section 319 of class piston piece 31 makes two semicircular knot
Pressure balance is able to achieve inside and outside structure, the opening portion 343 of same split ring 34 enables the pressure of split ring or more two sides
Balance.
In order to enable solenoid valve to work under relatively small pressure difference, in other words to keep the movement of solenoid valve relatively stable
Reliably, the second core assembly 30 of the solenoid valve of present embodiment is provided with protrusion 36 at the position of opposite connection chamber 24, dashes forward
Playing portion 36, protrusion protrudes outward in other words downwards with respect to valve port matching piece 32, and protrusion is opposite to be connected to chamber setting or have part to stretch
Enter to be connected to chamber 24, the position of the end 310 of protrusion 36 can be slightly below valve port portion, protrusion when solenoid valve is opened in other words
The height L of vertical direction of effective length L, that is, protrusion 36 end 310 from valve port matching piece 32 of 36 vertical directions can be big
In being equal to vertical direction distance h:L >=h of the valve port matching piece 32 from valve port portion, pass through the valve opening 312 of perforation, valve opening in this way
312 faces are connected to chamber setting or the end by being connected to this one end of chamber of valve opening is located at connection chamber, can make the pressure at valve opening 312
Pressure of the power relatively closer to connection chamber；Preferably make the effective length L i.e. end of protrusion 36 of 36 vertical direction of protrusion
The height L of 310 vertical direction from valve port matching piece 32 is greater than vertical direction distance h of the valve port matching piece 32 from valve port portion.
Vertical direction distance h of the valve port matching piece 32 from valve port portion is also the row that can be acted of the second core assembly in present embodiment
Journey, the stroke h that can be acted of the second core assembly are less than the stroke that core assembly can act.Define: valve mouth diameters D1 is
Valve port portion corresponds to the diameter D1 that valve port matching piece realizes effective sealing of cooperation sealing position, from the inside of primary valve to outlet
The vertical outlet section in direction is the diameter or equivalent diameter D2 for being connected to chamber, upper end diameter d1, that is, protrusion initial part of protrusion
The diameter d1 of position and inner wall diameter most nearby of lower end diameter d2, that is, protrusion distal portion from connection chamber of protrusion
D2, the horizontal distance L0 of the distal portion of protrusion and the inner wall part for being connected to chamber meet: d1<D1, d2<d1, L0>=h, protrusion
Distal portion at the inner wall part of connection chamber with the horizontal distance L0 for the inner wall part for being connected to chamber more than or equal to the second spool
The stroke h of component.In addition, being also possible to following situations between D1, d2, D1, h: 4*D1*h < (D22-d22).The big portion of protrusion
Exceptionally surface be smoothly transit structure play a part of fluid guiding, if the main body of the outer surface of protrusion can be reversed circle
The section of mesa-shaped structure or protrusion may include that at least section of one section of circular arc or protrusion may include an at least Duan Zhi
The section of line or protrusion may include one section of circular arc and the section of the tangent composite structure of straight line or protrusion includes two sections
The composite structure of the above circular arc and straight line.The section of protrusion as shown in Figure 2 and Figure 3 includes at least one section of circular arc, it may also be said to
The main body in the section of protrusion is arc structure, and the main part of protrusion includes the flow-guiding structure 331 to smoothly transit, makes fluid
It is smaller that flow resistance is relatively small and fluid is interfered；In addition can also with as shown in fig. 7, locating part 33a protrusion main body
Portion's substantially round-like structure, the main part of protrusion include smooth linear transition structure 332, correspondingly, locating part 33a
It is fixed or is limited by bending part 313.In this specification protrusion refer to the second core assembly be located on the inside of sealing fit portion,
And from the outwardly projecting part of sealing fit portion with the cooperation sealing of valve port portion of valve port matching piece, such as the present embodiment protrusion packet
Include a part of locating part 33a and a part of class piston piece 31.
An other embodiment is described below, as Figure 8-Figure 10, Fig. 8 is that the solenoid valve of another embodiment exists
The schematic cross-sectional view of opening state, Fig. 9 are the partial enlargement diagram of solenoid valve shown in Fig. 8, and Figure 10 is solenoid valve shown in Fig. 8
The schematic diagram of second core assembly.It may be with fluid when the side, that is, fluid of locating part 33 relatively outwardly flows in present embodiment
The side of contact is to smoothly transit structure i.e. locating part 33 with diversion division 331, and correspondingly, valve port portion 211 also has smooth
Transition structure, transition structure smoothly transit the vertical inner wall part B from the sealing C of cooperation sealing to connection chamber；Definition:
Valve mouth diameters D1, that is, valve port portion corresponds to the diameter D1 that valve port matching piece realizes effective sealing of cooperation sealing position, from main valve
The inside of mouth is the diameter or equivalent diameter D2 for being connected to chamber to the vertical outlet section of export direction, and the upper end diameter d1 of protrusion is
The diameter d1 at the starting position of protrusion and lower end diameter d2, that is, protrusion distal portion of protrusion are from connection chamber
Wall diameter d2 most nearby, the effective stroke h of the second core assembly, the distal portion A of diversion division 331 and the inner wall for being connected to chamber
The horizontal distance L1 in portion, the height h1 of the transition structure in valve port portion 211, valve port portion cooperation sealing sealing C be connected to chamber
The horizontal distance L2 of inner wall part, effective length L, that is, protrusion 36 end 310 of 36 vertical direction of protrusion is from valve port matching piece
The height L, L1 of 32 vertical direction meet the following conditions:
The structure of diversion division 331 above is arc structure, and from the sealing fit portion of valve port matching piece to locating part
The distance of end, second core assembly to the valve port portion progressively increases, and entire flow passage structure is made to be involutory in this way
Reason, it is also relatively small to the resistance of fluid.In addition it is also possible to other structures such as linear structure, as shown in figure 11.Solenoid valve
Other structures and working principle can refer to embodiments described above, and embodiments described above solenoid valve is normally closed electromagnetism
Valve, in addition this altered technical solution also can be applied to normally open solenoid valve.The technical program can be used for guide type electromagnetic
Valve or say step-by-step solenoid valve.It changes so relatively small, protrusion only is set on the second core assembly, that is, main valve plug
Portion makes the pressure of the upside of the second core assembly closer to the connection chamber i.e. pressure of first interface side, and the second core assembly
The pressure of the periphery of downside makes the pressure difference of the two sides up and down of the second core assembly then close to pressure at the second interface of solenoid valve
Closer to the pressure difference of inlet and outlet, reduce the operating pressure difference of solenoid valve suitably, relative to traditional distributed electromagnetic
Valve or guide electromagnetic valve, some is poor using the operating pressure that the height for reducing main valve events reduces solenoid valve, but reduces main valve
The height of movement can be such that the pressure drop of runner increases；And some reduces solenoid valve by the way of the area for increasing seal face
Operating pressure is poor, and the volume of solenoid valve can in this way increased.And embodiments described above uses the core assembly in main valve
The mode of upper setting protrusion changes smaller, opposite can to reduce solenoid valve and be operating normally pressure difference, but not will increase electricity substantially
Magnet valve, the pressure drop for also enabling flow through solenoid valve are held essentially constant.
In addition the structure of valve port matching piece is relatively simple in techniques as described above scheme, but valve port matching piece may be used also
To be other structures, i.e., above-mentioned locating part is integrated to valve port matching piece together, components can be reduced in this way, as shown in figure 12
Embodiment.Second valve hole part also may include class piston piece, valve port matching piece 32 ', and valve port matching piece 32 ' passes through class piston
Part is fixed or is limited, and without locating part presented hereinbefore is arranged again, correspondingly, protrusion includes the one of the valve port matching piece
A part of part and class piston piece；Valve port accessory part cooperates as with valve port portion, is in addition also used as fluid guide.Valve port
The inner wall part of portion to connection chamber is similarly the structure to smoothly transit；Valve port matching piece 32 ' includes sealing fit portion and be located relatively at
Flow-guiding structure or transition structure on the inside of sealing fit portion, sealing fit portion and valve port portion cooperation seal and realize solenoid valve
It opens or closes；The flow-guiding structure of valve port matching piece or the distal portion A of transition structure and the inner wall part that is connected to chamber it is horizontal away from
From L1, meet:
Wherein:
D2: the diameter or equivalent diameter of the connection chamber:
L1: the flow-guiding structure of valve port matching piece or the distal portion A of transition structure and the water of the inner wall part for being connected to chamber
Flat distance；
L2: valve port portion cooperates the sealing C of sealing and the horizontal distance for the inner wall part for being connected to chamber；
H: the stroke that second core assembly can act.
The other structures and operating principle of the present embodiment are referred to embodiments described above, no longer repeat here.
Technical solution of the present invention is described in a manner of specific embodiment above, applies specific herein
Example is expounded working principle and embodiment, and the explanation of embodiment of above is merely used to help understand the technology of the present invention
The method and its core concept of scheme.The orientation such as upper and lower in this specification are described based on orientation corresponding with attached drawing
, it is not construed as the limitation to corresponding technical solution of the present invention.It should be pointed out that coming for those skilled in the art
Say, under the premise of not departing from relative theory, can also to technical solution of the present invention carry out it is several improve, modification, combination or
Replacement, these should also fall into the protection scope of the claims in the present invention.
Claims (9)
1. a kind of solenoid valve, including pedestal, valve component, core assembly；The core assembly includes movable core, the first valve
Core, the core assembly are set to the chamber of the valve component, and the movable core can be under external force along axial direction certain
Movement in the distance of range i.e. its stroke；The solenoid valve further includes the second core assembly, and second core assembly includes the
Two valve hole parts, the solenoid valve have at least two interfaces, two of them interface respectively as the solenoid valve import with
Outlet, the solenoid valve further include connection chamber, the connection chamber and one of orifice, the second core assembly setting
There are protrusion, valve opening, position or the protrusion of the protruding part in the relatively described connection chamber of second core assembly
Portion is arranged towards the connection chamber or the protrusion partially protrudes into the connection chamber setting, and the protrusion is less than the company
Cavity；The valve opening perforation setting, a part of the valve opening close to this side of protrusion are located on the inside of the protrusion, the valve
Hole is located at the connection chamber towards the connection chamber or the valve opening part；In one of work shape of the solenoid valve
State, the protruding part are predominantly located in the connection chamber in the connection chamber or the protrusion；Second valve hole part
Including class piston piece, valve port matching piece；The valve port matching piece is realized by position-limit mechanism with the class piston piece relatively fixed
Or limit, the protrusion and valve port matching piece fixed setting or relative limit are arranged；The solenoid valve includes valve port portion,
The valve port matching piece, which has to cooperate with the valve port portion, to be sealed and realizes the sealing fit portion that solenoid valve opens or closes, described
Protruding part is in the inside of the sealing fit portion, and the relatively described sealing fit portion of the protrusion is provided projectingly；The valve
The sealing fit portion of mouth matching piece is arranged with respect to valve port portion, defines the protrusion headed by the position of the valve port matching piece
End, the protrusion be relatively distant from the valve port matching piece position be end, the distal portion of the protrusion be connected to chamber
The distance L0 of inner wall part be greater than or equal to the stroke h that can act of second core assembly, and meet: 4*D1*h <
(D22-d22)；
D1: the valve port portion corresponds to the diameter that valve port matching piece realizes effective sealing of cooperation sealing position；
D2: the diameter or equivalent diameter of the connection chamber:
D2: the diameter of the inner wall of the lower end diameter of the protrusion or the distal portion of protrusion from connection chamber most nearby；
L0: the distal portion of the protrusion and the horizontal distance of the inner wall part that is connected to chamber or the distal portion of the protrusion with
It is connected to the minimum range of the inner wall part of chamber；
H: the stroke that second core assembly can act.
2. solenoid valve according to claim 1, which is characterized in that define the stroke that the movable core can move axially
For first stroke, defining the stroke that second core assembly can act is second stroke, and the second stroke is described
With a distance from axial direction of the valve port matching piece from the valve port portion, the second stroke of second core assembly is less than the activity
The first stroke of iron core；And the effective length of the protrusion axial direction, that is, protrusion end cooperates from the valve port
The height of the axial direction of part is greater than or equal to a distance from axial direction of the valve port matching piece from the valve port portion.
3. solenoid valve according to claim 2, which is characterized in that the position-limit mechanism includes locating part, the locating part
It limits the valve port matching piece or the fixed valve port matching piece, the locating part is fixed or limited by bending part or pressure contact portion
Position, the protrusion include locating part or including part locating part；The locating part includes flow-guiding structure or transition knot outwardly
Structure；The inner wall part of the valve port portion to the connection chamber is the structure to smoothly transit；The flow-guiding structure of the locating part or transition
The horizontal distance L1 of the distal portion of structure and the inner wall part for being connected to chamber meets:
Wherein:
L1: the distal portion of the flow-guiding structure of locating part or transition structure and the horizontal distance of the inner wall part for being connected to chamber；
L2: valve port portion cooperates effective sealing of sealing and the horizontal distance for the inner wall part for being connected to chamber.
4. solenoid valve according to claim 2, which is characterized in that the protrusion includes one of the valve port matching piece
Divide a part with position-limit mechanism；
The inner wall part of the valve port portion to the connection chamber is the structure to smoothly transit；
The valve port matching piece includes sealing fit portion and flow-guiding structure or transition structure, sealing fit portion and the valve outwardly
Oral area cooperation seals and realizes solenoid valve and open or close；
The distal portion of the flow-guiding structure of the valve port matching piece or transition structure and the inner wall part for being connected to chamber it is horizontal away from
From L1, meet:
Wherein:
L1: the distal portion of the flow-guiding structure of valve port matching piece or transition structure and the inner wall part for being connected to chamber it is horizontal away from
From；
L2: valve port portion cooperates effective sealing of sealing and the horizontal distance for the inner wall part for being connected to chamber.
5. solenoid valve according to claim 3 or 4, which is characterized in that second core assembly has relative smooth
Flow-guiding structure, from the sealing fit portion of the valve port matching piece to the end of locating part, second core assembly to the valve
The distance of oral area progressively increases.
6. solenoid valve according to claim 5, which is characterized in that second core assembly further includes elastomeric element, bullet
Property component includes elastic element and split ring, the split ring include opening portion and at least one towards inner opening groove, it is described
Split ring has the outside wall portions of relative smooth, and the elastic element is set to the groove of the split ring；The second spool group
The side of part is additionally provided with outside groove, and the elastomeric element is limited in the groove of second core assembly.
7. solenoid valve according to claim 6, which is characterized in that the valve component includes casing, is used for and the seat
Body cooperation or fixed lid, with described sleeve pipe by being welded and fixed, the movable core is located in described sleeve pipe the lid,
The movable core and the inner wall part of described sleeve pipe are slidably matched in the axial direction, and the valve component and pedestal are connected by screw thread
It connects and fixes or by being welded and fixed or setting fixation by circlip card；The lid has a chamber, second core assembly
For main body section in the chamber of the lid, the main part of second core assembly can be under external force in the intracavitary of the lid
Sliding, second valve hole part are less than the chamber of the lid, and the elastomeric element is contacted with the inner wall part of the chamber of the lid
Or localized contact.
8. solenoid valve described according to claim 1 or 2 or 3 or 4 or 6 or 7, which is characterized in that on second core assembly
It is provided with the first valve seat with the cooperation of the first spool of the core assembly, first valve seat is located at the opposite of the protrusion
Side, the valve opening penetrates through first valve seat and protrusion, first valve seat are oppositely arranged with first spool；It is described
Pedestal includes two interfaces: first interface, second interface, and wherein first interface is connected to chamber connection with described, and the pedestal includes
Main valve chamber, the main valve chamber are connected to the second interface；In addition pedestal further includes main valve seat, and main valve seat is equipped with the valve port
Portion；The axis of the connection chamber is parallel with the axis of the valve opening or substantially overlaps.
9. solenoid valve according to claim 5, which is characterized in that be provided on second core assembly and the iron core
First valve seat of the first spool cooperation of component, first valve seat are located at the opposite side of the protrusion, and the valve opening passes through
Lead to first valve seat and protrusion, first valve seat is oppositely arranged with first spool；The pedestal includes two and connects
Mouthful: first interface, second interface, wherein first interface is connected to chamber connection with described, and the pedestal includes main valve chamber, the main valve
Chamber is connected to the second interface；In addition pedestal further includes main valve seat, and main valve seat is equipped with the valve port portion；The axis of the connection chamber
Line is parallel with the axis of the valve opening or substantially overlaps.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610895826.8A CN107956911B (en) | 2016-10-14 | 2016-10-14 | A kind of solenoid valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610895826.8A CN107956911B (en) | 2016-10-14 | 2016-10-14 | A kind of solenoid valve |
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| Publication Number | Publication Date |
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| CN107956911A CN107956911A (en) | 2018-04-24 |
| CN107956911B true CN107956911B (en) | 2019-10-15 |
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| CN201610895826.8A Active CN107956911B (en) | 2016-10-14 | 2016-10-14 | A kind of solenoid valve |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735928B (en) * | 2018-07-18 | 2022-02-18 | 浙江三花制冷集团有限公司 | Pilot-operated type electromagnetic valve |
| CN111120667B (en) * | 2018-10-30 | 2021-10-22 | 浙江三花智能控制股份有限公司 | Electromagnetic valve |
| CN111734876B (en) * | 2020-08-19 | 2020-12-22 | 广东三方利精密技术有限公司 | Pilot-operated high-pressure electromagnetic valve |
| EP4112984A1 (en) | 2021-06-30 | 2023-01-04 | Danfoss A/S | Pilot controlled solenoid valve |
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| CN204437420U (en) * | 2015-01-13 | 2015-07-01 | 浙江春晖智能控制股份有限公司 | A kind of flow proportional solenoid valve of piston valve mouth structure |
| EP3018434A1 (en) * | 2014-11-06 | 2016-05-11 | TGK CO., Ltd. | Electromagnetic valve |
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| JP2012154381A (en) * | 2011-01-25 | 2012-08-16 | Saginomiya Seisakusho Inc | Electromagnetic valve and pilot type electromagnetic valve |
| CN202252253U (en) * | 2011-08-29 | 2012-05-30 | 宁波开灵气动元件制造有限公司 | Large-caliber direct-acting piston type solenoid valve |
| CN202182240U (en) * | 2011-09-07 | 2012-04-04 | 浙江中宝自控元件有限公司 | Electromagnetic valve |
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| Publication number | Publication date |
|---|---|
| CN107956911A (en) | 2018-04-24 |
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Effective date of registration: 20201126 Address after: 312500 Technology Center building of Sanhua Industrial Park, Meizhu Town, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: ZHEJIANG SANHUA INTELLIGENT CONTROLS Co.,Ltd. Address before: 310018 No. 289-2, No. 12, Hangzhou economic and Technological Development Zone, Zhejiang Patentee before: Hangzhou Sanhua Research Institute Co.,Ltd. |