CN102537480B - A kind of guide electromagnetic valve - Google Patents
A kind of guide electromagnetic valve Download PDFInfo
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- CN102537480B CN102537480B CN201010624737.2A CN201010624737A CN102537480B CN 102537480 B CN102537480 B CN 102537480B CN 201010624737 A CN201010624737 A CN 201010624737A CN 102537480 B CN102537480 B CN 102537480B
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Abstract
The invention discloses a kind of solenoid valve, particularly a kind of solenoid valve of heavy caliber leading type, there is fluid inlet and fluid output, described solenoid valve comprises main valve body assembly (1), described main valve body assembly (1) comprises the main valve body (11) of hollow, is arranged in the valve seat (12) having chamber in vain of described main valve body (11), and described interior valve seat (12) is provided with a piston cavity volume (122); Described solenoid valve also comprises the outlet valve component (7) matching fixing with described main valve body assembly (1), described outlet valve component (7) is provided with primary valve (73), relatively with the primary valve (73) of described outlet valve component (7) is also provided with piston element (5).The flow passage structure design of this solenoid valve makes fluid have less flow resistance when flowing, thus uses relatively little primary valve just can obtain required flow, and then reduces manufacture cost and make miniaturized structure.
Description
Technical field
The present invention relates to flow control component, the guide electromagnetic valve of the control fluid cooling medium flowing particularly in a kind of refrigeration technology field.
Background technique
In refrigeration technology field, solenoid valve is the cold medium flux controlling component of chiller plant, and its working procedure is generally: along with energising or the power-off of coil, and solenoid valve opens or cuts out in the chiller plant systems such as air-conditioning, thus controls circulation and the interruption of refrigerant.Certainly, the Applicable scope of solenoid valve is not limited in above-mentioned refrigeration technology field, such as, is also widely used in Hydraulic Field.Some bigbore solenoid valves generally adopt leading type control and two-stage or multistage valve opening control mode.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of the solenoid valve of a kind of typical leading type in prior art; Fig. 2 is the structural representation of the valve seat of solenoid valve in Fig. 1.
As shown in Figure 1, solenoid valve comprises main valve, pilot valve, inlet tube 4 ', outer pipe 5 ' and is set in the electromagnetic coil (not shown in FIG.) of pilot valve outside.Main valve comprises valve seat 1 ', be arranged in the piston element 3 ' of the valve pocket of valve seat 1 ' and be positioned at the end cap 2 ' of valve seat 1 ' top.Valve seat 1 ' is provided with primary valve 1 ' 3, and along with rising or the decline of piston element 3 ', piston element 3 ' is opened or closed primary valve 1 ' 3, thus achieves conducting and the interruption of inlet tube 4 ' and outer pipe 5 '.
As shown in Figure 2, valve seat 1 ' is provided with fluid inlet 1 ' 1 and fluid output 1 ' 2, and fluid inlet 1 ' 1 is communicated with inlet tube 4 ', and fluid output 1 ' 2 is communicated with outer pipe 5 '.As shown in Figure 2, the axis of fluid inlet 1 ' 1 and fluid output 1 ' 2 all with the axes normal of primary valve 1 ' 3, the flow direction of fluid in solenoid valve inside is roughly as shown by arrows in FIG..
As shown by the arrows in Figure 2, through four 90 ° of turnovers, thus very large flow resistance to be defined in solenoid valve inside when fluid flows through solenoid valve inside.Given this, in order to ensure the flow required for acquisition, need the area increasing primary valve 1 ' 3; After the area increase of primary valve 1 ' 3, correspondingly, the area of the piston element 3 ' opened or close primary valve 1 ' 3 also will increase.The two area increases the increase that can cause manufacture cost on the one hand, is also unfavorable for the miniaturization of structure on the other hand.In addition, the increase of the two area, when piston element 3 ' closes primary valve 1 ' 3, the leakage rate of the two can increase, and thus can reduce sealability therebetween.
Given this, how reducing the flow resistance of solenoid valve inside, thus use relatively little primary valve just can obtain required flow, and then reduce manufacture cost and make miniaturized structure, is the problem that those skilled in the art need solution badly.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of solenoid valve, the structural design of this solenoid valve makes fluid have less flow resistance when flowing, thus use relatively little primary valve just can obtain required flow, and then manufacture cost can be reduced and make miniaturized structure.
For solving the problems of the technologies described above, the invention provides a kind of solenoid valve, there is fluid inlet and fluid output, described solenoid valve comprises main valve body assembly, described main valve body assembly comprises the valve seat of the main valve body being provided with main receiving cavity, the main receiving cavity being positioned at described main valve body, and described interior valve seat is provided with a piston cavity volume; Described solenoid valve also comprises the outlet valve component matching fixing with described main valve body assembly, and described outlet valve component is provided with primary valve, relatively with the primary valve of described outlet valve component is also provided with piston element; Described piston element is arranged in or is locally positioned at the piston cavity volume of described valve seat, and can carry out axial to-and-fro motion, selectively to open or to close described primary valve; There is between described main valve body with described interior valve seat the main valve body assembly runner being communicated with described fluid inlet.Relative to integrated main valve body modular construction in order to ensure shaping manufacturability requirement, the width of circular arc runner must be widened and entrance point machine shaping more complicated, and form main valve body assembly by the combination of main valve body and interior valve seat, because both are manufacturing respectively, manufacture process is relatively simple and convenient, and main valve body and interior valve seat are combined to form main valve body assembly runner, the circulation path design of such runner more can be optimized and reduce flow resistance, and the width of circular arc runner can reduce as far as possible, and processing uses raw material also can reduce respectively.
Preferably, described main valve body also comprises pilot valve portion, and the pilot valve of described solenoid valve comprises described pilot valve portion and pilot valve parts.
Preferably, described guide electromagnetic valve comprises a hyperbaric chamber be communicated with described fluid inlet, the piston pressure chamber between described piston element and described interior valve seat, fluid output side low-pressure cavity, and described piston pressure chamber to be optionally communicated with fluid output side low-pressure cavity by pilot passage or to cut off.
Preferably, described pilot valve portion is provided with pilot valve mouth, described pilot valve mouth is connected by the fluid output side low-pressure cavity of pilot valve outlet passage and described guide electromagnetic valve that local is positioned at described pilot valve portion; Described piston pressure chamber realizes optionally being communicated with fluid output side low-pressure cavity or cutting off by the open and close of pilot valve mouth.
The minimum cross-sectional flow area of described pilot valve inlet passage is greater than the minimum cross-sectional flow area of described pilot valve outlet passage.
Preferably, described guide electromagnetic valve also comprises a pilot valve pressure chamber, and described main valve body assembly also includes pilot valve inlet passage and is communicated with described piston pressure chamber and described pilot valve pressure chamber.
Preferably, described interior valve seat is also provided with balance channel, described balance channel one end is communicated with described hyperbaric chamber, and the other end is connected with the piston pressure chamber formed between described piston element with described interior valve seat.Preferably, the minimum cross-sectional flow area of described balance channel is not more than 1/2 of the minimum cross-sectional flow area of described pilot passage.
Preferably, described balance channel is arranged at the diapire of the close described fluid inlet side of described interior valve seat.
Preferably, the main valve body assembly runner being communicated with described fluid inlet between the inwall of described fluid inlet and described main valve body and the circumferential side wall of described interior valve seat with or described primary valve axis three wherein direction is consistent or parallel between the two.
Preferably, described piston element direction of motion when opening or close is communicated with the axis being parallel or consistent of the main valve body assembly runner of described fluid inlet with between the inwall of described main valve body and the circumferential side wall of described interior valve seat.
Preferably, described outlet valve component and described main valve body assembly are by being welded and fixed sealing.
Preferably, described interior valve seat and described main valve body are by being welded and fixed.Like this, after being welded and fixed, fine finishing can be carried out further again, as the positioning reference plane of pilot valve inlet passage, main valve body and the fine finishing of piston cavity volume inner wall part etc., thus ensure coaxality.
Preferably, the minimum cross-sectional flow area of described fluid inlet is more than 1.2 times of the minimum cross-sectional flow area of described primary valve.
On the basis of existing technology, the main valve body assembly of solenoid valve provided by the present invention comprises main valve body and interior valve seat, by carrying out stationary positioned and obtain main valve body assembly in the main receiving cavity that interior valve seat loaded main valve body, after again piston element etc. having been assembled, refill and allot a mouthful valve component, outlet valve component obtains location, then between the two again by welding or adopting the mode fixing seals such as screw by the second positioning part that main valve body is arranged.
From said structure, when piston element opens primary valve, fluid directly to be entered in main valve body assembly runner by fluid inlet and by the runner between piston element and outlet valve component 7, and enter primary valve by the runner between described piston element and outlet valve component 7 again, and then entered by fluid output in the discharge connection of the solenoid valve be communicated with fluid output.Obviously, will be equivalent to the structural design of 90 ° of turnovers through four times relative to fluid in prior art, the present invention considerably reduces fluid turnover number of times and turning angle, and the flow resistance that thus fluid is subject to significantly reduces.
Because flow resistance obviously reduces, thus use less primary valve just can obtain required flow; The area of primary valve reduces, and the area of the piston element of thus closing or opening primary valve also reduces accordingly, and then reduces manufacture cost and make miniaturized structure.In addition, the reduction of the area of primary valve and piston element, when piston element closes primary valve, the two leakage rate can corresponding reduction, thus improves sealability therebetween.
In sum, the heavy caliber of the present invention's design, the solenoid valve of Large Copacity leading type are by the optimal design of stream, and when same bore, design of the present invention reduces the flow resistance of solenoid valve vent latus rectum, reduces the pressure loss; And for the product that same Kv value requires, solenoid valve profile provided by the present invention can be less, and can reduce raw-material use amount.The runner design of solenoid valve of the present invention, makes fluid have less flow resistance when flowing, thus uses relatively little primary valve just can obtain required flow, and then reduces manufacture cost and make miniaturized structure.The heavy caliber of the present invention's design, the solenoid valve of Large Copacity leading type are relatively applicable to the guide electromagnetic valve of primary valve circulation latus rectum at more than 10mm.In addition, solenoid valve of the present invention forms main valve body assembly by being assembled by interior valve seat and main valve body, and manufacturing is convenient, reduces manufacture cost and improves working life simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the solenoid valve of a kind of typical leading type in prior art;
Fig. 2 is the structural representation of the valve seat of solenoid valve in Fig. 1;
Fig. 3 is the main pseudosection of solenoid valve in an embodiment of the present invention;
Fig. 4 is the top plan view of the local of solenoid valve in Fig. 3 embodiment;
Fig. 5 is the top plan view of the solenoid valve in Fig. 3 embodiment in the local of open mode;
Fig. 6 is the structural representation of the main valve body assembly of solenoid valve in Fig. 3 and Fig. 4, Fig. 5;
Fig. 7 is the A-A part sectioned view of main valve body assembly in Fig. 6;
Fig. 8 is the structural representation of the main valve body in Fig. 6.
Embodiment
Core of the present invention is to provide a kind of solenoid valve of leading type, the structural design of this solenoid valve makes fluid in identical bore situation have less flow resistance when flowing, thus use relatively little primary valve just can obtain required flow, and then manufacture cost can be reduced and make miniaturized structure.Or onesize primary valve can obtain the lower pressure loss, improve the efficiency of system.
In order to make those skilled in the art understand technological scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, wherein Fig. 3 is the main pseudosection of the solenoid valve of leading type in an embodiment of the present invention, Fig. 4 is the top plan view of solenoid valve in Fig. 3 embodiment, Fig. 5 is the partial top sectional view of the solenoid valve in Fig. 3 embodiment in open mode, Fig. 6 is the structural representation of the main valve body assembly of solenoid valve in Fig. 3 and Fig. 4, Fig. 5, Fig. 7 is the A-A part sectioned view of main valve body assembly in Fig. 6, and Fig. 8 is the structural representation of the main valve body in Fig. 6.
As shown in the figure, the solenoid valve of leading type provided by the present invention, comprise main valve body assembly 1, pilot valve parts 2, be fixed on the electromagnetic coil (not shown in FIG.) outside pilot valve parts 2, the outlet valve component 7 fixing with described main valve body assembly 1, outlet valve component 7 comprises outlet valve seat 71 and discharge connection 72; The fluid output 74 that outlet valve seat 71 is provided with fluid output primary valve 73 and flows out from primary valve 73; The pilot valve sleeve pipe 22 of pilot valve parts 2 is fixed with main valve body assembly 1; Solenoid valve is also provided with reciprocating piston element 5, and piston element 5 to-and-fro motion under the control of fluid opens or closes primary valve 73, thus realizes unlatching or the closedown of solenoid valve.
Particularly, main valve body assembly 1 comprise the main valve body 11 of hollow, the entrance sleeve 13 be fixedly connected on main valve body 11, main valve body 11 main receiving cavity 114 internal fixtion of hollow be provided with interior valve seat 12, in order to reduce the resistance of fluid flowing, main receiving cavity 114 is arranged to entrance sleeve 13 coaxial; Main receiving cavity 114 also can be arranged to depart from certain distance with entrance sleeve 13 and both parallel modes, as being set directly on main valve body in addition.Be provided with the pilot valve portion 110 matched with pilot valve parts at the sidepiece of the radial direction of main valve body 11, have pilot valve cavity volume 111 in pilot valve portion 110, pilot valve portion 110 is provided with pilot valve mouth 112.Have between pilot valve mouth 112 with discharge connection 72 one be communicated with both pilot valve outlet passage 115.In the present embodiment, pilot valve outlet passage 115 is that local is positioned on guide valve seat, and by an adapter connection outlet adapter 72, can certainly be other connection conduction mode.The main receiving cavity 114 of main valve body 11 comprises the fluid inlet 117 near entrance sleeve 13, position is provided with the first positioning part 116 for locating with interior valve seat 12 therebetween, is also provided with for the second positioning part 113 with outlet valve component 7 stationary positioned at the opposite side away from fluid inlet 117; Two positioning parts arrange a stepped part formation by each in the present embodiment particularly; Other orientation type can certainly be adopted.Interior valve seat 12 is fixedly installed in the main receiving cavity 114 of main valve body 11, in in the present embodiment, valve seat 12 has two protuberances 126, protuberance 126 matches with the first positioning part 116 of the main receiving cavity 114 of main valve body 11 and obtains axial, radial location, particularly, the first positioning part 116 of the some of two protuberances 126 of interior valve seat 12 and the main receiving cavity 114 of main valve body 11 is abutted against by interior valve seat 12 being loaded or being pressed into main receiving cavity 114 and obtains axially locating; Two protuberances 126 of interior valve seat 12 can adopt the mode of close-fitting to fix with the first positioning part 116 of the main receiving cavity 114 of main valve body 11; More reliable in order to make both coordinate, can also after both are fixing, adopting the mode of welding to fix further, all can realize both reliable fixing as adopted the modes such as spot welding, stove weldering or soldering.Other structure or position mode can also be adopted in addition between interior valve seat and main valve body, as both disalignments but both axis parallel, particularly as interior valve seat is adopted eccentric setting; Location between the two can also adopt the inner wall part of the main receiving cavity at main valve body to arrange guide-localization groove in addition, and the mode of corresponding protuberance location is set on interior valve seat, the shape of groove can have the multiple shape easily realizing as dihedral, square etc. and process; In addition for reducing the use of material, corresponding guide-localization groove also can also be set on interior valve seat, then adopt guide-localization part to snap in main valve body or interior valve seat, reinstalling interior valve seat or main valve body; And then use the modes such as welding to carry out the fixing of three further.
Interior valve seat 12 is provided with piston cavity volume 122 in the side away from entrance sleeve 13, the bottom of piston cavity volume 122 is also provided with positioning and guiding portion 123, and interior valve seat 12 is also provided with the balance channel 121 of hyperbaric chamber 1141 connection that piston cavity volume 122 is communicated with entrance sleeve 13.On main valve body assembly 1, be also provided with the pilot valve inlet passage 14 being communicated with piston pressure chamber 1221 and pilot valve pressure chamber 1111 simultaneously, for making solenoid valve action more reliable, the through-current capacity of pilot valve inlet passage 14 is greater than balance channel 121, the through-current capacity of pilot valve outlet passage 115, therefore be preferably and reach above-mentioned through-current capacity requirement, the minimum cross-sectional flow area of pilot valve inlet passage 14 is greater than the minimum cross-sectional flow area of pilot valve outlet passage 115, and the minimum cross-sectional flow area of pilot valve outlet passage 115 is more than 2 times of the minimum cross-sectional flow area of balance channel 121, if the cross-sectional flow area of pilot valve outlet passage 115 is less than 2 times of cross-sectional flow area of balance channel 121, when solenoid valve is opened, the pressure in piston pressure chamber 1221 can not effectively be reduced, thus affect the foundation of the pressure difference of piston pressure chamber 1221 and piston assembly opposite side, cause solenoid valve can not reliablely and stablely opening action.
The assembly of main valve body described in the present embodiment is the solid of rotation of general cylindrical, and fluid inlet 117 is offered along the axis of main valve body assembly 1.It should be noted that at this, the profile of main valve body assembly 1 also can be that other shape is as square or hexagon.
Solenoid valve also comprises piston element 5, piston element 5 comprises piston 51, piston seal plug 52, sealing plug pad 53, fastening piece, and in the present embodiment, fastening piece specifically have employed fastening screw trip bolt 54, in addition, also other means of fixation can be adopted, as fixed by crimping mode.In addition, piston 51 and piston seal plug also can be that one is formed, and so just do not need fastening piece to fix.Wherein, piston 51 matches with piston cavity volume 122, piston 51 can carry out axially reciprocating to drive piston element to-and-fro motion thus make piston seal plug 52 separate with primary valve 73 phase or contact thus opening and closing primary valve 73, in order to make piston 51 and piston cavity volume 122 have good sealability, being also provided with piston packing ring 55 and piston tightening hoop 56 on piston 51 in the present embodiment along piston cavity volume 122.Particularly, that the outside wall portions position coordinated with piston cavity volume 122 of piston 51 is provided with inside groove part, piston tightening hoop 56 and piston packing ring 55 are placed in groove part, make piston tightening hoop 56 conflict inner wall part direction from piston packing ring 55 to piston cavity volume and make piston packing ring 55 outwards contact with the inner wall part of piston cavity volume 122 and seal.Also elastic member is provided with, particularly as piston spring 6 between piston element 5 and interior valve seat 12.Piston 51 is also provided with a supporting portion, and for support piston spring 6, particularly, in the present embodiment, supporting portion is the bottom wall portion at piston 51 inner chamber, and certainly, supporting portion can also be other structure.
Piston pressure chamber 1221 is defined between such solenoid valve inner carrier parts 5 and interior valve seat 12, there is balance channel 121 in piston pressure chamber 1221 respectively towards the hyperbaric chamber 1141 be communicated with high pressure adapter 13 between main valve body 11 with interior valve seat 12, namely piston pressure chamber 1221 is communicated with hyperbaric chamber 1141 by balance channel 121, and be communicated with pilot valve pressure chamber 1111 by pilot valve inlet passage 14, thus be optionally connected with outlet side low-pressure cavity by pilot valve mouth, pilot valve outlet passage further.
Sealability during in order to ensure closed electromagnetic valve between piston element and primary valve 73, at piston 51, primary valve 73 side of outlet valve seat 71 is provided with a circular groove in the present embodiment, for placing piston seal plug 52, in addition in order to ensure the reliability that piston seal plug 52 is fixing with piston 51, be partial to primary valve side at piston seal plug 52 and be also provided with sealing plug pad 53, and by fastening screw trip bolt 54, piston seal plug 52, sealing plug pad 53 are fixed on piston 51.Certainly, piston seal plug 52 and piston 51 can also be wholely set, and so just can not otherwise fix.
Relative with described piston element 5 is export valve component 7, outlet valve component 7 comprises outlet valve seat 71 and discharge connection 72, both are fixed together by welding, outlet valve seat 71 is provided with primary valve 73, primary valve 73 is oppositely arranged with the piston seal plug 52 of piston element 5, and the present embodiment middle outlet valve component 7 and main valve body assembly 1 are fixed together by welding, like this, both eliminate the mode of to be fixed by flange and utilizing seal ring to seal, and connect more reliable; And owing to eliminating the use of seal ring, such working life also can improve; And use material also can reduce, thus reduce the use amount of material.Certainly, be yet fine by other means of fixation between outlet valve component 7 and main valve body assembly 1, as fixed etc. by flange-type with original the same.
Like this, piston element 5 under control to-and-fro motion time, just selectively open or close primary valve 73, namely achieve unlatching or the closedown of solenoid valve.
The sidepiece of main valve body 11 radial direction of main valve body assembly 1 is provided with pilot valve portion 110, the pilot valve of solenoid valve comprises pilot valve portion 110 and pilot valve parts 2, pilot valve parts 2 by pilot valve sleeve pipe 22 and the pilot valve portion 110 of main valve body 11 be weldingly connected connect fixing, particularly as being fixed by argon welding or soldering or other welding manners.There is in pilot valve portion 110 pilot valve cavity volume 111, pilot valve mouth 112, have between pilot valve mouth 112 and the low-pressure cavity of the outlet side of solenoid valve one be communicated with both conductive channel, be provided with pilot valve outlet passage 115 between pilot valve mouth 112 and discharge connection 72 in the present embodiment, also the outlet valve seat 71 be connected with discharge connection 72 can be connected in addition, equally also object of the present invention can be reached.
The pilot valve sleeve pipe 22 that pilot valve parts 2 comprise with pilot valve portion is welded and fixed, away from pilot valve mouth 112 and and pilot valve sleeve pipe 22 be tightly connected end socket 21, core iron part 24 in pilot valve sleeve pipe 22, be arranged on core iron returning spring 23 between end socket 21 and core iron part 24, core iron sealing plug 27, the sealing plug stop pad 28 for fixing core iron sealing plug 27, damping spring 26 that relative pilot valve mouth 112 is arranged; Core iron sealing plug 27 is fixed on core iron part 24 substantially, namely in the present embodiment, core iron sealing plug 27 can do little movement relative to core iron part 24 in axis is axially fixing relatively movably, can alleviate the impact of core iron sealing plug 27 pairs of pilot valve mouths 112 like this when core iron part 24 does axial motion.Like this, pilot valve portion 110 just defines a pilot valve pressure chamber 1111 after completing with pilot valve assembling parts, in addition, main valve body assembly 1 is also provided with the pilot valve inlet passage 14 of the pilot valve pressure chamber 1111 of a conducting piston pressure chamber 1221 and pilot valve.Pilot valve pressure chamber 1111 is connected with the discharge connection 72 of solenoid valve when pilot valve mouth 112 is opened and becomes relatively low pressure chamber, and be connected with the piston pressure chamber 1221 of solenoid valve again, like this, piston pressure chamber 1221 also becomes relatively low pressure chamber simultaneously; Then cut off when pilot valve mouth 112 is closed and being communicated with of the discharge connection 72 of solenoid valve, and be only connected with the piston pressure chamber 1221 of solenoid valve.
In order to ensure to export the coaxality between valve component 7 and piston element 5, the main valve body 11 of main valve body assembly is also provided with positioning reference plane 118, such outlet valve component 7 can have good coaxality when coordinating with main valve body assembly 1, like this, when the coaxality of main valve body 11, interior valve seat 12, piston element 5 is ensured, coaxality between the primary valve 73 of piston element 5 and outlet valve component 7 have also been obtained guarantee, and positioning reference plane 118 coordinates with outlet valve component 7 peripheral side; Preferably, positioning reference plane processes after interior valve seat and main valve body have been assembled again.This structural design achieves location diametrically between outlet valve component 7 and main valve body assembly 1 easily, and reliability is higher.
Interior valve seat 12 is also provided with positioning and guiding portion 123 in the bottom of piston cavity volume 122, and accordingly, piston element 5 is provided with the positioning section 57 matched with positioning and guiding portion 123.This structural design can make piston element 5 in movement process vertically, moves more stable, and piston element 5 generally can not be offset diametrically, thus ensures coordinating between piston element 5 and the primary valve 73 of outlet valve seat 71.In addition, radial location between piston element 5 and interior valve seat 12 can also adopt other orientation types, as arranged guiding rib at the inwall of interior valve seat 12, the guiding groove or contrary setting etc. that match correspondingly are set at the outer wall of piston element 5, the positioning requirements of the radial direction between both can be met.
Particularly, the working principle of solenoid valve is substantially as follows, and pilot valve inlet passage 14, pilot valve mouth 112, pilot valve outlet passage 115 define the pilot passage of solenoid valve.When solenoid valves, core iron part 24 moves to end socket 21 direction under the effect of electromagnetic force, core iron part 24 drives core iron sealing plug 27 to leave pilot valve mouth 112, and pilot valve mouth 112 is opened, and piston pressure chamber 1221 is communicated with discharge connection 72 by above-mentioned pilot passage.Bore due to above-mentioned pilot passage is obviously greater than the bore of balance channel 121, the through-current capacity of pilot passage is obviously greater than the through-current capacity of balance channel 121, the pressure in the piston pressure chamber 1221 thus now on the left of piston element 5 is closer to the pressure in discharge connection 72, because discharge connection 72 place is relatively low pressure end, the pressure thus in piston pressure chamber 1221 is relatively little.Now, the fluid of being come in by fluid inlet adapter 13 enters the valve pocket between main valve body 11 with interior valve seat 12 and becomes relative hyperbaric chamber 1141, and enter and be positioned at primary valve 73 outer circumferential and piston element 5 and main valve body assembly 1, cavity between outlet valve seat 71, as Fig. 5, because fluid inlet adapter 13 place is relatively high pressure end, thus the right side of piston element 5 is relative high voltage terminal, the pressure of the hyperbaric chamber on the right side of piston element 5 overcomes the pressure in the piston pressure chamber 1221 on the left of piston element 5 and the elastic force of piston spring 6, promote piston element 5 to left movement, thus achieve primary valve 73 and open.The elementary process of fluid flowing is: the fluid of being come in by fluid inlet adapter 13, by the fluid inlet 117 of main valve body assembly, main valve body assembly runner 119 between main valve body 11 and interior valve seat 12, enter primary valve 73, and then flow in the discharge connection 72 that is communicated with primary valve 73.
When solenoid valve no electric circuit, core iron part 24 moves to the direction away from end socket 21 under the effect of the spring force of returning spring 23, core iron part 24 drives core iron sealing plug 27 guide valve port 112 direction to move, pilot valve mouth 112 is closed, and the pilot passage that piston pressure chamber 1221 is communicated with discharge connection 72 is cut off because pilot valve outlet passage 115 is cut off.Piston pressure chamber 1111 interruption is communicated with discharge connection 72 low voltage terminal, under the effect of balance channel 121, pressure in piston pressure chamber 1221 slowly raises, the last pressure close to equaling fluid inlet adapter 13 high voltage terminal, thus under the acting in conjunction of the spring force of pressure difference and piston spring 6, piston element 5 moves right, and primary valve 73 is closed.
From said structure, when piston element 5 opens primary valve 73, fluid directly enters the main valve body assembly runner 119 between the circumferential side wall of main valve body 11 and the outer wall of described interior valve seat 12 by fluid inlet adapter 13, and enter primary valve 73 by main valve body assembly runner 119 again, and then enter in the discharge connection 72 of the solenoid valve be communicated with primary valve 73.Obviously, will through the structural design of four 90 ° of turnovers relative to fluid in prior art, the present invention considerably reduces fluid turnover number of times and angle, and the flow resistance that thus fluid is subject to when identical flow area can significantly reduce.
Like this, in identical fluid resistance situation, relatively can reduce the design latus rectum of primary valve 73.Because flow resistance obviously reduces, less primary valve 73 thus can be used just can to obtain required flow when requiring same through-current capacity and flow resistance; The area of primary valve 73 reduces, and the area of the piston element 5 of thus closing or opening primary valve 21 also can reduce accordingly, and then reduces manufacture cost and make miniaturized structure.In addition, the area of primary valve 73 and piston element 5 reduces, and when piston element 5 closes primary valve 73, leakage rate therebetween also can correspondingly reduce, and thus can improve sealability therebetween, thus improves the performance of solenoid valve.
On the basis of above-described embodiment, resistance when flowing to make refrigerant is less, the position of convection cell import can also make concrete setting.Such as, by making the axis collinear of the primary valve 73 of entrance sleeve 13 and outlet valve seat 71, or both axis being parallel, and spacing is less.Obviously, this structural design can reduce flow resistance further.In addition, as shown in the figure, in the present embodiment, the sectional shape of main valve body assembly runner 119 is roughly the combination of 2 curved circular ring-types, also can be set to a curved circular ring-type in addition; In order to reduce flow resistance further, the aperture A of fluid inlet 117 is preferably more than the internal diameter of circular runner 119, and in other words, the aperture A of fluid inlet 117 needs the external diameter B being greater than interior valve seat 12.In addition, the axis of fluid inlet 117 and the axis of primary valve 73 can be arranged in parallel, particularly, outlet valve seat 71 and fluid inlet 117 are deviated, makes fluid inlet 117 can reduce to the resistance of main valve body assembly runner equally.
As can be seen from also upper, heavy caliber guide electromagnetic valve of the present invention completes by main valve body and interior valve seat are carried out assembling due to main valve body assembly, such manufacture processing is simple and convenient, use material also relatively less, in addition, main valve body and interior valve seat can also be fixed together by welding, and carry out precision machining after welding, thus the coaxality both ensureing, and piston element is made to be ensured with the coaxality of the primary valve of outlet valve component further; By weld, to carry out sealing fixing with between main valve body assembly 1 to export valve component 7 in addition, eliminate flange connection of the prior art, be fixedly connected with more reliable like this, also there will be no the problem causing because seal ring is aging and leak outside, in addition, simplify design, decrease amount of parts.
It should be noted that, in the above-described embodiments, only make a kind of concrete setting for realizing piston element 5 reciprocating structure in piston cavity volume, and the other structure that can realize this function also should within protection scope of the present invention.The various orientation word mentioned in specification of the present invention such as upper and lower, inside and outside, left, right, front and rear etc. is for convenience of description, and should not be limitation of the present invention.
Above a kind of solenoid valve provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (10)
1. the solenoid valve of a leading type, there is fluid inlet and fluid output, it is characterized in that: described solenoid valve comprises main valve body assembly (1), the solid of rotation that described main valve body assembly (1) is general cylindrical, it comprises the main valve body (11) being provided with main receiving cavity, the main receiving cavity being positioned at described main valve body (11) with described main valve body (11) by the valve seat assembled or welding manner fixes (12), described interior valve seat (12) is provided with a piston cavity volume (122); Described solenoid valve also comprises the outlet valve component (7) matching fixing with described main valve body assembly (1), described outlet valve component (7) is provided with primary valve (73), relatively with the primary valve (73) of described outlet valve component (7) is also provided with piston element (5); Described piston element (5) is arranged in or is locally positioned at the piston cavity volume (122) of described valve seat (12), and carries out axial to-and-fro motion, selectively to open or to close described primary valve (73); There is between described main valve body (11) with described interior valve seat (12) the main valve body assembly runner being communicated with described fluid inlet.
2. guide electromagnetic valve as claimed in claim 1, it is characterized in that, described main valve body (11) also comprises pilot valve portion (110), the pilot valve of described solenoid valve comprises described pilot valve portion (110) and pilot valve parts, described guide electromagnetic valve also comprises a hyperbaric chamber (1141) be communicated with described fluid inlet (117), piston pressure chamber (1221) between described piston element (5) and described interior valve seat (12), fluid output side low-pressure cavity, described piston pressure chamber (1221) to be optionally communicated with fluid output side low-pressure cavity by pilot passage or to cut off.
3. guide electromagnetic valve as claimed in claim 2, it is characterized in that, described pilot valve portion (110) is provided with pilot valve mouth (112), and described pilot valve mouth is connected by the fluid output side low-pressure cavity of the pilot valve outlet passage (115) and described guide electromagnetic valve that are positioned at or are locally positioned at described pilot valve portion (110); Described piston pressure chamber (1221) realizes optionally being communicated with fluid output side low-pressure cavity or cutting off by the open and close of pilot valve mouth (112).
4. guide electromagnetic valve as claimed in claim 3, it is characterized in that, described guide electromagnetic valve also comprises a pilot valve pressure chamber (1111), described main valve body assembly (1) also includes pilot valve inlet passage (14), and it is communicated with described piston pressure chamber (1221) and described pilot valve pressure chamber (1111); The minimum cross-sectional flow area of described pilot valve inlet passage is greater than the minimum cross-sectional flow area of described pilot valve outlet passage.
5. guide electromagnetic valve as claimed in claim 2, it is characterized in that, described interior valve seat (12) is also provided with balance channel (121), described balance channel (121) one end is communicated with described hyperbaric chamber (1141), and the other end is connected with the piston pressure chamber (1221) formed between described piston element (5) with described interior valve seat (12); The minimum cross-sectional flow area of described balance channel (121) is not more than 1/2 of the minimum cross-sectional flow area of described pilot passage.
6. guide electromagnetic valve as claimed in claim 5, it is characterized in that, described balance channel (121) is arranged at the diapire of the close described fluid inlet side of described interior valve seat (12).
7. the guide electromagnetic valve as described in any one of claim 1-6, it is characterized in that, the axis of described fluid inlet be communicated with between the inwall of described main valve body (11) and the circumferential side wall of described interior valve seat (12) axis of main valve body assembly runner of described fluid inlet and/or the axis three of described primary valve wherein direction is consistent or parallel between the two.
8. the guide electromagnetic valve as described in any one of claim 1-6, it is characterized in that, described piston element (5) direction of motion when opening or close is communicated with the axis being parallel or consistent of the main valve body assembly runner of described fluid inlet with between the inwall of described main valve body (11) and the circumferential side wall of described interior valve seat (12).
9. the guide electromagnetic valve as described in any one of claim 1-6, it is characterized in that, described outlet valve component (7) and described main valve body assembly (1) by be welded and fixed seal and/or described interior valve seat (12) and described main valve body (11) by being welded and fixed.
10. the guide electromagnetic valve as described in any one of claim 1-6, is characterized in that, the minimum cross-sectional flow area of described fluid inlet is more than 1.2 times of the minimum cross-sectional flow area of described primary valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010624737.2A CN102537480B (en) | 2010-12-25 | 2010-12-25 | A kind of guide electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010624737.2A CN102537480B (en) | 2010-12-25 | 2010-12-25 | A kind of guide electromagnetic valve |
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| Publication Number | Publication Date |
|---|---|
| CN102537480A CN102537480A (en) | 2012-07-04 |
| CN102537480B true CN102537480B (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010624737.2A Active CN102537480B (en) | 2010-12-25 | 2010-12-25 | A kind of guide electromagnetic valve |
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| CN (1) | CN102537480B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751417A (en) * | 2017-11-01 | 2019-05-14 | 浙江三花制冷集团有限公司 | A kind of guide electromagnetic valve |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6031931B2 (en) | 2012-10-03 | 2016-11-24 | 株式会社デンソー | Refrigeration cycle equipment |
| CN110735929A (en) * | 2018-07-18 | 2020-01-31 | 浙江三花制冷集团有限公司 | pilot-operated solenoid valve |
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| CN2591359Y (en) * | 2002-12-04 | 2003-12-10 | 曾庆贵 | Damping wear resisting non-return valve |
| CN201215210Y (en) * | 2008-04-28 | 2009-04-01 | 浙江新三荣制冷有限公司 | Piston type solenoid valve |
| CN201354853Y (en) * | 2009-02-11 | 2009-12-02 | 赵旭 | High pressure electromagnetic valve |
| CN101893098A (en) * | 2009-05-22 | 2010-11-24 | 浙江三花股份有限公司 | Pilot-operated type two-way circulated solenoid valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7341236B2 (en) * | 2006-03-07 | 2008-03-11 | Husco International, Inc. | Pilot operated valve with a pressure balanced poppet |
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| CN2591359Y (en) * | 2002-12-04 | 2003-12-10 | 曾庆贵 | Damping wear resisting non-return valve |
| CN201215210Y (en) * | 2008-04-28 | 2009-04-01 | 浙江新三荣制冷有限公司 | Piston type solenoid valve |
| CN201354853Y (en) * | 2009-02-11 | 2009-12-02 | 赵旭 | High pressure electromagnetic valve |
| CN101893098A (en) * | 2009-05-22 | 2010-11-24 | 浙江三花股份有限公司 | Pilot-operated type two-way circulated solenoid valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109751417A (en) * | 2017-11-01 | 2019-05-14 | 浙江三花制冷集团有限公司 | A kind of guide electromagnetic valve |
| CN109751417B (en) * | 2017-11-01 | 2020-03-06 | 浙江三花制冷集团有限公司 | Pilot-operated type electromagnetic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102537480A (en) | 2012-07-04 |
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