CN102563089A - Piloted solenoid valve - Google Patents
Piloted solenoid valve Download PDFInfo
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- CN102563089A CN102563089A CN2010106247387A CN201010624738A CN102563089A CN 102563089 A CN102563089 A CN 102563089A CN 2010106247387 A CN2010106247387 A CN 2010106247387A CN 201010624738 A CN201010624738 A CN 201010624738A CN 102563089 A CN102563089 A CN 102563089A
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Abstract
The invention discloses a solenoid valve and in particular discloses a large-caliber piloted solenoid valve. The valve comprises main valve body components and outlet valve seat components fixed by being matched with the main valve body components, wherein the main valve body components are provided with a piston cavity; the outlet valve seat components are provided with a main valve port; piston components are also arranged opposite to the main valve port of the outlet valve seat components; the piston components are arranged or locally arranged in the piston cavity of the main valve body components; the piston components comprise a seal portion matched with the main valve port and a piston matching portion matched with inner wall of the piston cavity; and when the solenoid valve is closed, at least 2/3 of the piston matching portion is arranged in the piston cavity and are matched with the inner wall of the piston cavity. Therefore, the piston components can not radially deflect during reciprocation and move more reliably.
Description
Technical field
The present invention relates to flow control component, the guide electromagnetic valve that the control fluid refrigerant in particularly a kind of refrigeration technology field flows.
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 the energising or the outage of coil, solenoid valve opens in chiller plant systems such as air-conditioning or cuts out, thus the circulation and the interruption of control refrigerant.Certainly, the Applicable scope of solenoid valve is not limited in above-mentioned refrigeration technology field, such as, also be widely used in Hydraulic Field.It is two-stage or the multistage valve control mode of opening that some bigbore solenoid valves generally adopt leading type control.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of solenoid valve of typical leading type in the existing technology; Fig. 2 is the structural representation of the valve seat of solenoid valve among Fig. 1.
As shown in Figure 1, solenoid valve comprise main valve, pilot valve, inlet tube 4 ', outer pipe 5 ' and be set in the outside electromagnetic coil (not shown in FIG.) of pilot valve.Main valve comprise valve seat 1 ', be arranged in valve seat 1 ' valve pocket piston element 3 ' and be positioned at the end cap 2 of valve seat 1 ' top '.Valve seat 1 ' be provided with primary valve 1 ' 3, along with piston element 3 ' rising or descend, piston element 3 ' unlatchings or close primary valve 1 ' 3, thus realized inlet tube 4 ' and outer pipe 5 ' conducting and interruption.
As shown in Figure 2, valve seat 1 ' be provided with fluid inlet 1 ' 1 and fluid output 1 ' 2, fluid inlet 1 ' 1 and inlet tube 4 ' be communicated with, fluid output 1 ' 2 and outer pipe 5 ' be communicated with.As shown in Figure 2, the axis of fluid inlet 1 ' 1 and fluid output 1 ' 2 all with the axis normal of primary valve 1 ' 3, fluid at the flow direction of solenoid valve inside roughly shown in arrow in scheming.
Shown in arrow among Fig. 2, fluid is flowed through solenoid valve will be through four 90 ° of turnovers when inner, thereby have formed very big flow resistance in solenoid valve inside.Given this, in order to guarantee to obtain needed flow, need to increase the area of primary valve 1 ' 3; After the area of primary valve 1 ' 3 increases, correspondingly, open or close the piston element 3 of primary valve 1 ' 3 ' area also to increase.The two area increases the increase that can cause manufacture cost on the one hand, also is unfavorable for design of miniization on the other hand.In addition, the increase of the two area, when piston element 3 ' close primary valve 1 ' 3, the leakage rate of the two can increase, thereby can reduce the sealability between the two.
Summary of the invention
The technical problem that the present invention will solve provides a kind of solenoid valve; The structural design of this solenoid valve makes fluid when mobile, have less flow resistance; Thereby use less relatively primary valve just can obtain needed flow; And then can use less relatively piston element, and the reliability when guaranteeing the piston element to-and-fro motion, reduce manufacture cost simultaneously and make the structure miniaturization.
For solving the problems of the technologies described above, the present invention provides a kind of solenoid valve of leading type, has fluid inlet and fluid output, and solenoid valve comprises the main valve body assembly, and said main valve body assembly is provided with a piston cavity volume; Said solenoid valve also comprises the fixed outlet valve base part that matches with said main valve body assembly, and said outlet valve base member is provided with primary valve, relatively also is provided with piston element with the primary valve of said outlet valve base member; Said piston element is arranged in or the local piston cavity volume that is positioned at said main valve body assembly; And can carry out axial to-and-fro motion; So that selectively open or close said primary valve, said piston element comprises the sealed department that cooperates with said primary valve, the piston auxiliary section that cooperates with the inwall of said piston cavity volume; When closed electromagnetic valve, said piston auxiliary section has at least 2/3 to be to be positioned at said piston cavity volume and to cooperate with the inwall of said piston cavity volume.When solenoid valve was opened, said piston auxiliary section all was positioned at said piston cavity volume and cooperates with the inwall of said piston cavity volume.Like this, thus the piston element action deflection time can not occur and makes action relatively steadily reliable like this.
Preferably, said solenoid valve also comprise said piston element and said in set guide structure in the piston cavity volume of valve seat.
Preferably, said guide structure comprises the guide portion that is provided with on the said piston element and the positioning and guiding portion of relative set in the piston cavity volume of valve seat in said;
Preferably, piston element is provided with the piston balance channel that is communicated with between positioning and guiding portion and the piston cavity volume.
Preferably, said guide portion is specially the directional post to said piston cavity volume diapire direction that is provided with on the said piston element, and the positioning and guiding portion of said piston element is specially the recess that cooperates with said directional post that said piston cavity volume diapire is provided with; Piston element is provided with the piston balance channel that is communicated with between said recess and the piston cavity volume.
Preferably, said main valve body assembly comprise hollow outer seat, be positioned at the valve seat in chamber of the hollow of said outer seat, said in valve seat be provided with the piston cavity volume.
Preferably, said piston element comprises piston and is fixed on the piston seal plug on the said piston that the piston seal plug is as the sealed department of said piston element.
Preferably, the piston auxiliary section of said piston radially also be provided with inside groove part, in said groove part, be provided with piston packing ring, can improve cooperating of piston element and piston cavity volume so effectively.Further, make the center of gravity of piston element be positioned at the radial position at this position of piston packing ring, deflection can not occur during piston element reciprocating action like this, the action of piston element, with cooperating of piston cavity volume all can be very steadily reliable.
Preferably, in said groove part, also be provided with the piston tightening hoop, the inside that said piston tightening hoop is arranged on piston packing ring is used for the said piston packing ring of tensioning; Like this, piston element is transferred also more convenient with the tension force that cooperates better and tightening hoop of piston cavity volume.
Preferably, said piston element the opposite one side with said sealed department also be provided with one axial to the recessed circular groove of said sealed department direction; Preferably, said piston element also is provided with piston guide rod in the opposite one side with said sealed department, and piston guide rod extends to form guide portion to the opposite direction of sealed department.
Preferably, the reciprocating axial direction of said piston element is consistent with the axial direction of said solenoid valve fluid inlet or parallel; The resistance that flows of fluid is less relatively like this, thereby can reduce the pressure loss of fluid.
Preferably, the sectional area of the piston auxiliary section (518) of said piston element is more than 1.8 times of sectional area (comprising 1.8 times) that said piston element is used to be provided with said sealed department position.Like this, when solenoid valve is opened, can corresponding increase fluid flow passage, the flow resistance of fluid during through this position of solenoid valve is corresponding less, thereby can reduce flow resistance and realize the design of miniization of solenoid valve; Can also alleviate the weight of piston element in addition, improve solenoid valve low pressure performance, improve the flexibility and the reliability of action.
Can know by said structure; When piston element is opened primary valve; Fluid directly gets in the main valve body assembly runner by fluid inlet and passes through the runner between piston element and the outlet valve base member; And get into primary valve by the runner between said piston element and the outlet valve base member again, and then get in the discharge connection of the solenoid valve that is communicated with fluid output through fluid output.Obviously, will be with respect to fluid in the existing technology through being equivalent to the structural design of 90 ° of turnovers for four times, the present invention has obviously reduced fluid turnover number of times and turning angle, thereby the flow resistance that fluid receives significantly reduces.
Because flow resistance obviously reduces, thereby uses less primary valve just can obtain needed flow; The area of primary valve reduces, thereby the area of closing or open the piston element of primary valve also can reduce accordingly, and then has reduced manufacture cost and made the structure miniaturization.Reciprocating reliability when guaranteeing to adopt the piston element after reducing; When solenoid valve is opened; The piston auxiliary section of piston element be arranged in the piston cavity volume, even when closed electromagnetic valve, make at least 2/3 being arranged in the piston cavity volume of piston auxiliary section of piston element; Piston element deflection radially occurs at the Shi Buhui that moves back and forth like this, and it is reliable to move; And, be arranged so that axially can shortening relatively of solenoid valve like this, thereby guarantee the miniaturization of solenoid valve.
The heavy caliber of the present invention's design, the solenoid valve of big capacity leading type relatively are fit to the guide electromagnetic valve of primary valve latus rectum more than 10mm through stream and structure optimization design; Under the situation of same bore, reduced the flow resistance in the solenoid valve distribution channel, reduced the pressure loss; And the product that requires for same Kv value, solenoid valve profile provided by the present invention can be littler, reduces raw-material use amount.The runner design of solenoid valve of the present invention makes fluid when mobile, have less flow resistance, thereby uses less relatively primary valve just can obtain needed flow, and then has reduced manufacture cost and made the structure miniaturization.And through the matching design between piston element and the piston cavity volume, the to-and-fro motion of piston element is reliably steady.
Description of drawings
Fig. 1 is the structural representation of a kind of solenoid valve of typical leading type in the existing technology;
Fig. 2 is the structural representation of the valve seat of solenoid valve among Fig. 1;
Fig. 3 is the main pseudosection of solenoid valve in an embodiment of the present invention;
Fig. 4 is the local top plan view of solenoid valve among Fig. 3 embodiment;
Fig. 5 is that solenoid valve among Fig. 3 embodiment is in the top plan view of open mode;
Fig. 6 is the structural representation of the main valve body assembly of solenoid valve among Fig. 3 and Fig. 4, Fig. 5;
Fig. 7 is the A-A part sectioned view of main valve body assembly among Fig. 6;
Fig. 8 is the local enlarged diagram of the solenoid valve among Fig. 3 embodiment.
Embodiment
Core of the present invention provides a kind of solenoid valve of leading type; The structural design of this solenoid valve makes piston element steadily reliable relatively when to-and-fro motion; When closed electromagnetic valve, the piston auxiliary section of piston element still has and is positioned at the piston cavity volume more than 2/3 and matches with the inner wall part of piston cavity volume.
In order to make those skilled in the art understand technological scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
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 among Fig. 3 embodiment; Fig. 5 is that solenoid valve among Fig. 3 embodiment is at the fragmentary top pseudosection of open mode; Fig. 6 is the structural representation of the main valve body assembly of solenoid valve among Fig. 3 and Fig. 4, Fig. 5, and Fig. 7 is the A-A part sectioned view of main valve body assembly among Fig. 6, and Fig. 8 is the local enlarged diagram of the solenoid valve among Fig. 3 embodiment.
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 pilot valve parts 2 outsides electromagnetic coil (not drawing among the figure), with said main valve body assembly 1 fixed outlet valve base part 7, outlet valve base member 7 comprises outlet valve seat 71 and discharge connection 72; Outlet valve seat 71 is provided with fluid output and reaches the fluid output 74 that flows out from primary valve 73 with primary valve 73; The pilot valve sleeve pipe 22 of pilot valve parts 2 is fixing with main valve body assembly 1; Solenoid valve also is 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, thereby realizes the unlatching of solenoid valve or close.
Particularly; Main valve body assembly 1 comprise the main valve body 11 of hollow, main receiving cavity 114 internal fixation that are fixedly connected on the hollow of entrance sleeve 13 on the main valve body 11, main valve body 11 be provided with in valve seat 12; In order to reduce the resistance that fluid flows, main receiving cavity 114 is arranged to entrance sleeve 13 coaxial; Main in addition receiving cavity 114 also can be arranged to depart from certain distance and both parallel modes with entrance sleeve 13.Sidepiece radially at main valve body 11 is provided with the pilot valve portion 110 that matches with the pilot valve parts, has pilot valve cavity volume 111 in the pilot valve portion 110, and pilot valve portion 110 is provided with pilot valve mouth 112.Between pilot valve mouth 112 and discharge connection 72, has a pilot valve outlet passage 115 that is communicated with both.Pilot valve outlet passage 115 is that the part is positioned on the guide valve seat in the present embodiment, and connects discharge connection 72 through an adapter, and the main valve body materials used is less relatively like this; Can certainly be other connection conduction mode, as main valve body 11 being arranged to have a male part and passage being set directly on the male part of main valve body 11 or the like.The main receiving cavity 114 of main valve body 11 comprises the fluid inlet 117 near entrance sleeve 13; The position is provided with first positioning part 116 that is used for interior valve seat 12 location therebetween, also is provided with second positioning part 113 that is used for outlet valve base member 7 stationary positioned at the opposite side away from fluid inlet 117; Two positioning parts form through a stepped part respectively is set in the present embodiment particularly; Can certainly adopt other orientation type.Valve seat 12 in being set with in the main receiving cavity 114 of main valve body 11; Valve seat 12 has two protuberances 126 in the present embodiment; Protuberance 126 match with first positioning part 116 of the main receiving cavity 114 of main valve body 11 and obtain axially, location radially; Particularly, through interior valve seat 12 is packed into or be pressed into main receiving cavity 114 make in first positioning part 116 of main receiving cavity 114 of some and main valve body 11 of two protuberances 126 of valve seat 12 connect and obtain axially locating; Two protuberances 126 of interior valve seat 12 can adopt the mode of close-fitting to fix with first positioning part 116 of the main receiving cavity 114 of main valve body 11; In order to make both cooperations more reliable, can also adopt the mode of welding further fixing in both fixing backs, all can realize both secure fixation as adopting modes such as spot welding, stove weldering or soldering.Can also adopt other structure or position mode between interior in addition valve seat and the main valve body, like both disalignments but both axis parallel, adopt eccentric the setting particularly as with interior valve seat; Between the two the location inner wall part that can also be employed in the main receiving cavity of main valve body is provided with the guide-localization groove in addition; And the mode that corresponding protuberance is located is set on interior valve seat, the shape of groove can have the multiple shape that realizes and process easily like dihedral, square etc.; For reducing the use of material, corresponding guide-localization groove can also be set also on interior valve seat in addition, adopt guide-localization spare to snap in main valve body or interior valve seat then, valve seat or main valve body in reinstalling; And then further use mode such as welding to carry out fixing of three.
The assembly of main valve body described in the present embodiment is the solid of rotation of general cylindrical, and fluid inlet 117 is axially offered along main valve body assembly 1.Need to prove that at this profile of main valve body assembly 1 also can be other shape such as square or hexagon.
Solenoid valve also comprises piston element 5, and piston element 5 is the solid of rotation of general cylindrical in the present embodiment, and piston element 5 comprises piston 51, piston seal plug 52, sealing plug pad 53, fastening piece,, piston seal plug 52 is just as the sealed department of piston element; Fastening piece is to have adopted fastening screw trip bolt 54 in the present embodiment, in addition, also can adopt other means of fixation, as fixing etc. through the crimping mode.In addition, piston 51 also can be that one constitutes with the piston seal plug, does not so just need fastening piece to fix.Wherein, piston 51 comprises piston auxiliary section 518, than the less minor diameter part 517 of the relative external diameter in piston auxiliary section, and the sealed department of piston element is the piston seal plug 52 that is arranged on the said minor diameter part 517 in the present embodiment; Match with piston cavity volume 122 inwalls basically in the piston auxiliary section 518 of piston 51, thereby thereby piston 51 can carry out axially reciprocating along piston cavity volume 122 separates or contact opening and closing primary valve 73 piston seal plug 52 to drive the piston element to-and-fro motion mutually with primary valve 73; In order to guarantee the reliable of reciprocating motion of the pistons, piston auxiliary section 518 great majority of piston 51 are arranged in the piston cavity volume 122 of valve seat, and the piston auxiliary section 518 that wherein is arranged in the piston cavity volume 122 of valve seat at least will be more than 2/3.In order to make piston 51 and piston cavity volume 122 that the better seal performance arranged, also on the piston auxiliary section 518 of piston 51, be provided with piston packing ring 55 and piston tightening hoop 56 in the present embodiment.Particularly; Be that the outside wall portions position that the inwall with piston cavity volume 122 at piston 51 cooperates is provided with inside groove part; Piston tightening hoop 56 and piston packing ring 55 are placed groove part, make piston tightening hoop 56 conflict piston packing rings 55 make piston packing ring 55 outwards contact and seal with the inner wall part of piston cavity volume 122 to the inner wall part direction of piston cavity volume; Piston packing ring can adopt PTFE or add other compound as gathering the PTFE mixture of stupid ester, graphite fiber etc., also can adopt the rubber-like sealing material in addition.For the to-and-fro motion that makes piston element 5 is more flexible, be provided with circular groove 511 at piston 51 towards a side of the piston cavity volume of interior valve seat in the present embodiment, the weight of piston 51 can obviously alleviate like this, and makes piston motion flexible; And make piston 51 be slightly less than the piston auxiliary section near the position of said piston cavity volume bottom wall portion, reduce both area of contact like this, reciprocating resistance is corresponding in the piston cavity volume reduces for piston.Reliable when making piston motion, also be provided with piston guide rod 512 in middle of piston, also be provided with elastic member between piston element 5 and the interior valve seat 12, particularly like piston spring 6, piston spring 6 specifically is set on the piston guide rod 512 in the present embodiment.Head at piston guide rod 512 specifically is provided with positioning section 57, is used for cooperating the location with the positioning and guiding portion 123 of interior valve seat 12; Between the positioning and guiding portion 123 of piston 51 and interior valve seat 12, form sealed cavity; The head positioning section 57 of piston guide rod 512 is provided with an axial bore that is communicated with the positioning and guiding portion 123 of interior valve seat 12 516, a piston equalizing orifice 515 that is communicated with piston cavity volume 122 in the present embodiment; Piston equalizing orifice 515 is communicated with axial bore 516 simultaneously; Just can not form the cavity of relative closure between the positioning and guiding portion 123 of piston 51 and interior valve seat 12 like this, thereby can not influence the left and right sides reciprocating action of piston element; Certainly the piston balance channel is not limited to this mode, like the mode that adopts the inclined hole conducting or inwardly recessed conduction trough mode conducting or the like is set on the positioning section 57 of piston.Guide structure between piston element and the interior valve seat can also be an alternate manner in addition, as between the inner wall part of the outside wall portions of piston element and the piston cavity volume of interior valve seat, setting up corresponding guiding groove or guiding rib or the like separately.
Thereby the sectional area of piston auxiliary section 518 forms a step surface 519 greater than the sectional area of the minor diameter part 517 that is used to be provided with piston seal plug 52 relatively; As in the present embodiment; The sectional area of the piston auxiliary section 518 of piston element is more than 1.8 times of sectional area that said piston element is used to be provided with minor diameter part 517 positions of said sealed department; Preferentially, the sectional area of the piston auxiliary section 518 of piston element is more than 2 times of sectional area that said piston element is used to be provided with minor diameter part 517 positions of said sealed department.Like this; The piston element two ends form pressure reduction Driving force (pressure P * area S) easily when low pressure; Thereby improve the low pressure performance, as shown in Figure 5, when solenoid valve is opened; Piston auxiliary section 518 all is arranged in the piston cavity volume; Thereby thereby and make solenoid valve not have tangible flow resistance at piston seal plug 52 positions and do not have bigger pressure and fall the flow resistance that makes solenoid valve and concentrate on the primary valve position from the flow fluid come of fluid inlet, thereby obtain fluid passage preferably, and make the solenoid movement reliable and stable.
Formed piston pressure chamber 1221 between solenoid valve inner carrier parts 5 and the interior valve seat 12 like this; Piston pressure chamber 1221 has balance channel 121 to lead to the hyperbaric chamber 1141 that is communicated with high aluminium hydraulic pressed connecting pipe 13 between main valve body 11 and the interior valve seat 12 respectively; Be that piston pressure chamber 1221 is communicated with hyperbaric chamber 1141 through balance channel 121; And be communicated with pilot valve pressure chamber 1111 through pilot valve inlet passage 14, thereby further optionally be connected with the outlet side low pressure chamber through pilot valve mouth, pilot valve outlet passage.
Sealability when guaranteeing closed electromagnetic valve between piston element and the primary valve 73; Be provided with a circular groove at piston 51 near primary valve 73 sides that export valve seat 71 in the present embodiment; Be used to place piston seal plug 52; In order to guarantee piston seal plug 52 and piston 51 reliability of fixation, also be provided with sealing plug pad 53 in piston seal plug 52 deflection primary valves one side, and piston seal plug 52, sealing plug pad 53 be fixed on the piston 51 in addition through fastening screw trip bolt 54.Certainly, piston seal plug 52 can also be wholely set with piston 51, so just can be otherwise unfixing.
Relative with said piston element 5 is outlet valve base member 7; Outlet valve base member 7 comprises outlet valve seat 71 and discharge connection 72; Both are fixed by welding in together, and outlet valve seat 71 is provided with primary valve 73, also is provided with an inner fovea part 711 in the outside of primary valve 73; From outlet valve seat 71 be streamline design near the main valve side basically to the inner wall part the inner fovea part 711, thereby reduce fluid flow resistance.Primary valve 73 is oppositely arranged with the piston seal plug 52 of piston element 5; Present embodiment middle outlet valve base part 7 is to be fixed by welding in main valve body assembly 1; Like this, both have cancelled the mode of fixing and utilize the seal ring sealing through flange, connect more reliable; And, also can improve working life like this owing to cancelled the use of seal ring; And materials used also can reduce, thereby reduces the use amount of material.Certainly, the means of fixation through other between outlet valve base member 7 and the main valve body assembly 1 is also still passable, as fixing or the like through flange-type with the same originally.
Like this, piston element 5, is just selectively opened perhaps and is closed primary valve 73 down during to-and-fro motion in control, has promptly realized the unlatching of solenoid valve or closes.
The pilot valve sleeve pipe 22 that pilot valve parts 2 comprise and pilot valve portion welding is fixing, away from pilot valve mouth 112 and and the end socket 21 that is tightly connected of pilot valve sleeve pipe 22, in the pilot valve sleeve pipe 22 core iron parts 24, be arranged on core iron returning spring 23 between end socket 21 and the core iron parts 24, pilot valve mouth 112 settings relatively core iron sealing plug 27, be used for fixing sealing plug stop pad 28, the damping spring 26 of core iron sealing plug 27; Core iron sealing plug 27 basic fixed are on core iron parts 24; Core iron sealing plug 27 promptly is axially fixing relatively movably with respect to core iron parts 24 axially doing little moving in the present embodiment, the impact that when core iron parts 24 are done axial motion, can alleviate 27 pairs of pilot valve mouths 112 of core iron sealing plug like this.Like this, pilot valve portion 110 has just formed a pilot valve pressure chamber 1111 after accomplishing with the pilot valve component-assembled, in addition, on main valve body assembly 1, also is 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 the relatively low pressure chamber, is connected with the piston pressure chamber 1221 of solenoid valve again simultaneously, and like this, piston pressure chamber 1221 also becomes the relatively low pressure chamber; When pilot valve mouth 112 is closed, then cut off and being communicated with of the discharge connection 72 of solenoid valve, and only be connected with the piston pressure chamber 1221 of solenoid valve.
In order to guarantee the coaxality between outlet valve base member 7 and the piston element 5; Also be provided with positioning reference plane 118 on the main valve body 11 of main valve body assembly; Can have coaxality preferably when outlet valve base member 7 cooperates with main valve body assembly 1 like this; Like this; Under the situation that the coaxality of main valve body 11, interior valve seat 12, piston element 5 is able to guarantee, the coaxality between the primary valve 73 of piston element 5 and outlet valve base member 7 also is guaranteed, and positioning reference plane 118 cooperates with outlet valve base member 7 peripheral side.This structural design has realized between outlet valve base member 7 and the main valve body assembly 1 location diametrically easily, and reliability is higher.
Particularly, the working principle of solenoid valve is following basically, and pilot valve inlet passage 14, pilot valve mouth 112, pilot valve outlet passage 115 have formed the pilot valve passage of solenoid valve.When solenoid valve is switched on; Core iron parts 24 move to end socket 21 directions under the effect of electromagnetic force; Core iron parts 24 drive core iron sealing plug 27 and leave pilot valve mouth 112, and pilot valve mouth 112 is opened, and piston pressure chamber 1221 is communicated with discharge connection 72 through above-mentioned pilot valve passage.Because the bore of above-mentioned pilot valve passage is obviously greater than the bore of balance channel 121; The through-current capacity of pilot valve passage is obviously greater than the through-current capacity of balance channel 121; Thereby the pressure ratio in the piston pressure chamber 1221 in piston element 5 left sides approaches the pressure in the discharge connection 72 at this moment; Because discharge connection 72 places are the relatively low pressure end, thereby the pressure in the piston pressure chamber 1221 is less relatively.At this moment; The fluid of being come in by fluid inlet adapter 13 gets into the valve pocket between main valve body 11 and the interior valve seat 12 and becomes relative hyperbaric chamber 1141; And get into 73 weeks of primary valve laterally and the cavity between piston element 5 and main valve body assembly 1, the outlet valve seat 71, like Fig. 5, taking over 13 places owing to fluid inlet is the relatively high pressure end; Thereby the right side of piston element 5 is relative high voltage terminal; The pressure of the hyperbaric chamber on piston element 5 right sides overcomes pressure and the elastic force of piston spring 6 in the piston pressure chamber 1221 in piston element 5 left sides, promotes piston element 5 to left movement, thereby has realized that primary valve 73 opens.The elementary process that fluid flows is: take over 13 fluids of coming in by fluid inlet; Through the main valve body assembly runner 119 between fluid inlet 117, main valve body 11 and the interior valve seat 12 of main valve body assembly; Get into primary valve 73, and then in inflow and the discharge connection 72 that primary valve 73 is communicated with.
When the solenoid valve no electric circuit; Core iron parts 24 move to the direction away from end socket 21 under the effect of the spring force of returning spring 23; Core iron parts 24 drive core iron sealing plug 27 guide valve ports 112 directions and move; Pilot valve mouth 112 is closed, and the pilot valve passage that piston pressure chamber 1221 is communicated with discharge connection 72 is owing to pilot valve outlet passage 115 is cut off.1111 interruptions of piston pressure chamber are communicated with discharge connection 72 low voltage terminals; Under the effect of balance channel 121; Pressure in the piston pressure chamber 1221 slowly raises, and is last near equaling the pressure that fluid inlet is taken over 13 high voltage terminals, thereby 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.
Can know by said structure; When piston element 5 is opened primary valve 73; Fluid is taken over the 13 main valve body assembly runners 119 that directly get between the outer wall of circumferential side wall and said interior valve seat 12 of main valve body 11 by fluid inlet; And get into primary valves 73 by main valve body assembly runner 119 again, and then in the discharge connection 72 of the solenoid valve that is communicated with primary valve 73 of entering.Obviously; Will be with respect to fluid in the existing technology through the structural design of four 90 ° of turnovers; The present invention has obviously reduced fluid turnover number of times and angle, and flow passage resistance of the present invention obviously reduces, thereby the flow resistance that fluid receives under the situation of identical flow area can significantly reduce.Perhaps under the situation of uniform pressure loss, can obviously reduce the design size of solenoid valve.
Like this, under identical fluid resistance situation, can reduce the design latus rectum of primary valve 73 relatively.Because flow resistance obviously reduces, thereby under the situation that requires same through-current capacity and flow resistance, can use less primary valve 73 just can obtain needed flow; The area of primary valve 73 reduces, thereby the area of closing or open the piston element 5 of primary valve 21 also can reduce accordingly, and then has reduced manufacture cost and made the structure miniaturization.In addition, the area of primary valve 73 and piston element 5 reduces, and when piston element 5 was closed primary valve 73, the leakage rate between the two also can correspondingly reduce, thereby can improve the sealability between the two, thereby improves the performance of solenoid valve.
On the basis of the foregoing description, the resistance when refrigerant is flowed is littler, and concrete setting is made in position that can also the convection cell import.Such as, through making the axis conllinear of entrance sleeve 13 and the primary valve 73 of outlet valve seat 71, perhaps both parallel axes, and spacing is less.Obviously, this structural design can further reduce flow resistance.In addition, as shown in the figure, the sectional shape of main valve body assembly runner 119 is roughly the combination of 2 curved circular ring-types in the present embodiment, also can be set to a curved circular ring-type in addition; In order further to reduce flow resistance, 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 need be greater than the external diameter B of interior valve seat 12.In addition, the axis of the axis of fluid inlet 117 and primary valve 73 can laterally arrange, and particularly, outlet valve seat 71 is departed from mutually with fluid inlet 117, and fluid inlet 117 can be reduced to the resistance of main valve body assembly runner.
Also can find out from last, heavy caliber guide electromagnetic valve of the present invention since the main valve body assembly through main valve body and interior valve seat are assembled completion, manufacturing is processed simple and convenient like this; Materials used is also less relatively; In addition, main valve body can also be fixed by welding in interior valve seat, and after welding, carries out precision machining; Thereby guarantee both coaxalitys, and make the coaxality of the primary valve of piston element and outlet valve base member be able to guarantee further; Carry out sealing and fixing through welding between outlet valve base member 7 and the main valve body assembly 1 in addition; Cancelled flange connection of the prior art; Fixed connection is more reliable like this, does not also have again because of seal ring is aging to cause the problem that leaks outside, in addition; Simplify design, also reduced amount of parts.
Need to prove, in the above-described embodiments, only make a kind of concrete setting for realization piston element 5 reciprocating structure in the piston cavity volume, and the other structure that can realize this function also should be within protection scope of the present invention.Various orientation word of mentioning in the specification of the present invention such as upper and lower, inside and outside, left, right, front and rear etc. and should not be limitations of the present invention just for convenience of description.
More than a kind of solenoid valve provided by the present invention has been carried out detailed introduction.Used concrete example among this paper principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (11)
1. the solenoid valve of a leading type has fluid inlet and fluid output, it is characterized in that: said solenoid valve comprises main valve body assembly (1), and said main valve body assembly (1) is provided with a piston cavity volume (122); Said solenoid valve also comprises the fixed outlet valve base part (7) that matches with said main valve body assembly (1), and said outlet valve base member (7) is provided with primary valve (73), relatively also is provided with piston element (5) with the primary valve (73) of said outlet valve base member (7); Said piston element (5) is arranged in or the local piston cavity volume that is positioned at said main valve body assembly; And can carry out axial to-and-fro motion; So that selectively open or close said primary valve (73), said piston element (5) comprises the sealed department that cooperates with said primary valve, the piston auxiliary section that cooperates with the inwall of said piston cavity volume (122); When closed electromagnetic valve, said piston auxiliary section has at least 2/3 to be to be positioned at said piston cavity volume (122) and to cooperate with the inwall of said piston cavity volume (122).
2. guide electromagnetic valve as claimed in claim 1; It is characterized in that; Said main valve body assembly (1) comprise hollow outer seat (11), be positioned at the valve seat (12) in chamber of the hollow of said outer seat (11), said in valve seat (12) be provided with piston cavity volume (122).
3. guide electromagnetic valve as claimed in claim 2 is characterized in that, said solenoid valve also comprises set guide structure in the piston cavity volume of interior valve seat (12) of said piston element (5) and said main valve body assembly.
4. guide electromagnetic valve as claimed in claim 3 is characterized in that, said guide structure comprises that the last guide portion that is provided with of said piston element (5) reaches the positioning and guiding portion of the middle relative set of piston cavity volume (122) of valve seat (12) in said; Preferably, piston element (5) is provided with the piston balance channel that is communicated with between positioning and guiding portion and the piston cavity volume.
5. like the wherein arbitrary described guide electromagnetic valve of claim 4; It is characterized in that; Said guide portion is specially said piston element (5) and goes up the directional post to said piston cavity volume (122) diapire direction that is provided with, and the positioning and guiding portion of said piston element is specially the recess that cooperates with said directional post that said piston cavity volume (122) diapire is provided with; Piston element (5) is provided with the piston balance channel that is communicated with between said recess and the piston cavity volume.
6. like the wherein arbitrary described guide electromagnetic valve of claim 1-5, it is characterized in that said piston element comprises piston and be fixed on the piston seal plug on the said piston that the piston seal plug is as the sealed department of said piston element.
7. guide electromagnetic valve as claimed in claim 6 is characterized in that, the piston auxiliary section of said piston radially also be provided with inside groove part, in said groove part, be provided with piston packing ring.
8. guide electromagnetic valve as claimed in claim 7 is characterized in that, in said groove part, also is provided with the piston tightening hoop, and the inside that said piston tightening hoop is arranged on piston packing ring is used for the said piston packing ring of tensioning.
9. as the arbitrary described guide electromagnetic valve of above-mentioned claim, it is characterized in that, said piston element the opposite one side with said sealed department also be provided with one axial to the recessed circular groove of said sealed department direction; Preferably, said piston element also is provided with piston guide rod in the opposite one side with said sealed department, and piston guide rod extends to form guide portion to the opposite direction of sealed department.
10. as the arbitrary described guide electromagnetic valve of above-mentioned claim, it is characterized in that the reciprocating axial direction of said piston element (5) is consistent with the axial direction of said solenoid valve fluid inlet or parallel.
11., it is characterized in that the sectional area of the piston auxiliary section (518) of said piston element is more than 1.8 times of sectional area (comprising 1.8 times) that said piston element is used to be provided with said sealed department position like the arbitrary described guide electromagnetic valve of above-mentioned claim.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010624738.7A CN102563089B (en) | 2010-12-25 | 2010-12-25 | Piloted solenoid valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010624738.7A CN102563089B (en) | 2010-12-25 | 2010-12-25 | Piloted solenoid valve |
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| CN102563089A true CN102563089A (en) | 2012-07-11 |
| CN102563089B CN102563089B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010624738.7A Active CN102563089B (en) | 2010-12-25 | 2010-12-25 | Piloted solenoid valve |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6505812B1 (en) * | 2000-11-17 | 2003-01-14 | Mks Instruments, Inc. | Solenoid valve |
| CN2559839Y (en) * | 2002-07-31 | 2003-07-09 | 李汉宝 | Piston guiding electromagnetic valve with high sealing performance |
| CN2753926Y (en) * | 2004-11-16 | 2006-01-25 | 浙江三花股份有限公司 | Large-diameter pilot electromagnetic valve |
| CN201100423Y (en) * | 2007-11-16 | 2008-08-13 | 浙江盾安人工环境设备股份有限公司 | Piston electromagnetic valve |
| CN201215210Y (en) * | 2008-04-28 | 2009-04-01 | 浙江新三荣制冷有限公司 | Piston type solenoid valve |
| CN201344266Y (en) * | 2009-03-15 | 2009-11-11 | 蒋可贞 | Piston type pilot-operated solenoid valve with large aperture |
-
2010
- 2010-12-25 CN CN201010624738.7A patent/CN102563089B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6505812B1 (en) * | 2000-11-17 | 2003-01-14 | Mks Instruments, Inc. | Solenoid valve |
| CN2559839Y (en) * | 2002-07-31 | 2003-07-09 | 李汉宝 | Piston guiding electromagnetic valve with high sealing performance |
| CN2753926Y (en) * | 2004-11-16 | 2006-01-25 | 浙江三花股份有限公司 | Large-diameter pilot electromagnetic valve |
| CN201100423Y (en) * | 2007-11-16 | 2008-08-13 | 浙江盾安人工环境设备股份有限公司 | Piston electromagnetic valve |
| CN201215210Y (en) * | 2008-04-28 | 2009-04-01 | 浙江新三荣制冷有限公司 | Piston type solenoid valve |
| CN201344266Y (en) * | 2009-03-15 | 2009-11-11 | 蒋可贞 | Piston type pilot-operated solenoid valve with large aperture |
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| Publication number | Publication date |
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| CN102563089B (en) | 2015-06-10 |
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