CN107542948A - Motor-driven valve - Google Patents
Motor-driven valve Download PDFInfo
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- CN107542948A CN107542948A CN201610525531.1A CN201610525531A CN107542948A CN 107542948 A CN107542948 A CN 107542948A CN 201610525531 A CN201610525531 A CN 201610525531A CN 107542948 A CN107542948 A CN 107542948A
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Abstract
A kind of motor-driven valve, including valve body, core assembly and rotary shaft, valve body is provided with chamber, core assembly includes valve seat and valve block, valve seat is fixedly installed with valve body, valve seat is arranged at the bottom of chamber or set close to the bottom of chamber, valve seat is provided with first through hole, second through hole and third through-hole, valve body includes the first circulation passage through valve body valve wall, second circulation passage, 3rd circulation passage and the 4th circulation passage, first circulation passage, second circulation passage and the 3rd circulation passage wherein one end are located at the bottom of the chamber, first circulation passage, second circulation passage and the 3rd circulation passage respectively with first through hole, second through hole connects with third through-hole；Valve block is limited in rotary shaft, and valve block opposite valve seat when rotary shaft rotates acts, and valve block is provided with groove in the one side relative with valve seat；Motor-driven valve comprises at least the first mode of operation and the second mode of operation.This structure electric valve can change refrigerant flow path, lighter in weight, take small volume, can effectively reduce cost.
Description
Technical field
The invention belongs to valve type technical field, is related to a kind of applied to (such as car air-conditioner system in coolant loop on automobile
System etc.) flow circuit control valve.
Background technology
In refrigerating circulatory device, generally use motor-driven valve is as the control unit for changing refrigerant flow path.Motor-driven valve, one
As using drive device drive rotary shaft move, rotary shaft again band movable valve block slided on valve seat, change import go out with which
Mouth connection.But traditional motor-driven valve, can only accomplish import it is selectable with it is multiple outlet switching connect, without with inlet communication
Outlet then ended.
So the outlet ended is not utilized effectively in the prior art, so that the use range of existing motor-driven valve
Limited, for different systems, either pattern needs to develop different motor-driven valves or needs motor-driven valve to coordinate other valve members
Demand can be reached.
Therefore, it is necessary to prior art is improved, to solve above technical problem.
The content of the invention
Include that various modes, use range be wide and the relatively simple motor-driven valve of structure it is an object of the invention to provide one kind.
Technical scheme provided by the invention includes a kind of motor-driven valve, including valve body, core assembly and rotary shaft, the valve body
Chamber is provided with, the core assembly includes valve seat and valve block, and the valve seat is fixedly installed with the valve body, and the valve seat is arranged at
The bottom of the chamber is set close to the bottom of the chamber, and the valve seat is provided with first through hole, the second through hole and third through-hole,
The valve body includes the first circulation passage, the second circulation passage, the 3rd circulation passage and the 4th of the valve wall through the valve body
Circulation passage, wherein one end of first circulation passage, the second circulation passage and the 3rd circulation passage are located at the bottom of the chamber
Portion, first circulation passage, the second circulation passage and the 3rd circulation passage respectively with first through hole, the second through hole and threeway
Hole connects, and the 4th circulation passage connects with the chamber；
The valve block is limited in the rotary shaft, and the valve block can be rotated and rotated with rotary shaft, and the valve block is described
Relatively described valve seat action when rotary shaft rotates, and the valve block is in the fitting relative with the valve seat of the one side towards the valve seat
Set, the valve block sets fluted in the one side relative with the valve seat；
The motor-driven valve comprises at least the first mode of operation and the second mode of operation,
When motor-driven valve is in the first mode of operation, the valve block covers second through hole and third through-hole, and the described 4th
Circulation passage is connected with first through hole, and second through hole is connected by the groove with the third through-hole；
When motor-driven valve is in the second mode of operation, the valve block covers the first through hole and third through-hole, and the described 4th
Circulation passage is connected with the second through hole, and the first through hole is connected by the groove with third through-hole.
The valve block includes matrix and the flange part being provided projectingly from the lateral radial direction in described matrix periphery, described
Groove is arranged at described matrix, and the flange part is additionally provided with keyway, and the rotary shaft is equipped with the keyway, the rotation
The valve block is driven to act by the keyway when axle rotates；The motor-driven valve also includes drive device, and the one of the rotary shaft
End is set with drive device transmission, and the rotary shaft is driven by the drive device.
The third through-hole is less than or equal to the first through hole from the valve seat from the maximum distance at the center of the valve seat
Center maximum distance, the third through-hole from the center of the valve seat minimum distance be more than or equal to the first through hole from
The minimum distance at the center of the valve seat, the third through-hole and the distance of the first through hole are less than second through hole
With the distance of the first through hole, the distance of the third through-hole and second through hole is less than second through hole and described the
The distance of one through hole；The valve seat is additionally provided with least two fixing hole, in the first mode of operation or the second mode of operation,
In terms of overlook direction, the groove does not cover the fixing hole or a hole is completely covered in the groove.
The valve block is at least made of ceramic materials with the valve seat opposite segments, the valve seat at least with the valve
Block opposite segments are made of ceramic materials, and seal is additionally provided between the valve seat and the bottom of chamber, and seal makes described
First through hole, the second through hole and third through-hole are mutually isolated.
In first mode of operation, in terms of overlook direction, the groove is overlapped with the second throughhole portions formed with
One coincidence part and part connects, the groove partially overlaps to form the second coincidence part and partly connect with third through-hole, described the
Two through holes are connected by first coincidence part, groove and the second coincidence part with the third through-hole；
In second mode of operation, in terms of overlook direction, the groove and first through hole partially overlap formed with the
Three coincidence parts, the groove and third through-hole partially overlap formed with passing through described the with the 4th coincidence part, the first through hole
Three coincidence parts, groove and the 4th coincidence part connect with the third through-hole.
The chamber has openend, and the chamber has stair-stepping structure, and chamber includes the first chamber, the second chamber and the 3rd chamber,
4th circulation passage connects with the first chamber, first step portion of the inwall formed with relatively close openend of the chamber, with
And the second step portion of the bottom of relatively close chamber, the first step portion is between the first chamber and the second chamber, and described second
For stepped portions between the second chamber and the 3rd chamber, the second step portion is in substantially semi-annular shape structure, and the valve body is in institute
A part of inwall for stating the second chamber forms the first stop part and the second stop part of the restricted valve block actuating length；
The valve block also includes the limiting section and flange part being provided projectingly from the lateral radial direction in described matrix periphery, described
The relatively described limiting section of flange part is close to the center of the valve body, and the limiting section is with respect to described matrix away from the flange
Portion；The limiting section includes first end, the second end in the first mode, the first end of the limiting section and the described first resistance
Stopper abuts against or relatively close first stop part.
Described matrix thickness d, the second chamber depth d2 and limiting section thickness d 1 meet：D ＞ d2 ＞ d1；The side of the limiting section
Edge is less than the inwall of second chamber between the center of the flange part to the ultimate range between the center of the flange part
Ultimate range, described matrix edge to the ultimate range between the center of the flange part be less than the 3rd chamber inwall arrive described in
Ultimate range between the center of flange part.
Support member is additionally provided with the valve body, the support member is fixedly mounted with the first step portion, from vertical view side
To see the support member include one be substantially in fan shape plate body, and both sides have a recess, the recess and the first chamber
Kept at a distance between inwall, and the space structure between the recess and the inwall of the first chamber connects with second chamber, institute
Stating plate body includes the first axis hole, the rotary shaft through the first axis hole and can relative support rotate and set, first axis hole
The rotary shaft is limited to move radially.
The valve block is additionally provided with least one spacing hole close to the side of the support member, and the spacing hole is blind hole,
The motor-driven valve is provided with a flexible member and spheroid in the spacing hole, and the spheroid is at least partially disposed at the spacing hole,
The spheroid is between the valve block and support member and abuts support member, one end of the spring and the bottom of the positioning hole
Abut against, the other end of the spring abuts against with the spheroid, and the spring is in compressive state；
Or the support member has elastic component in the setting close to the side of the valve block, the flexible member side abuts
In the support member, opposite side abuts against with the valve block, and the flexible member is located at the support member and the valve block
Between.
The Single port of first circulation passage and the Single port of the second circulation passage are positioned at relative with the bottom of the chamber
The 3rd side, the Single port of the 3rd circulation passage and the Single port of the 4th circulation passage are respectively positioned at the side with the chamber
Wall relative second side and first side, the 3rd circulation passage include one it is generally vertically extending straight to passage and one
The interconnection extended generally transverse；
The flow area of the first through hole and the second through hole is more than the flow area of the third through-hole, the 3rd stream
The internal diameter that circulation passage is located at the port in the valve body is less than the internal diameter positioned at the port of the second side；
First circulation passage, the second circulation passage, the 3rd circulation passage and the 4th circulation passage include stepped
Structure；And at least one in the first side of the valve body, second side and the 3rd side is provided with screw hole.
The motor-driven valve also includes the 3rd mode of operation and the 4th mode of operation,
When motor-driven valve is in three mode of operations, the second end of the limiting section is abutted against with second stop part or institute
Relatively close second stop part in the second end of limiting section is stated, the valve block does not cover the second through hole and third through-hole, described
The endless all standing first through hole of valve block, the 4th circulation passage respectively with the first through hole, the second through hole and third through-hole
Connection；
When motor-driven valve is in four mode of operations, the valve block covers third through-hole, valve block portion point covering first through hole or
Person's valve block does not cover first through hole, and valve block portion point the second through hole of covering or valve block do not cover the second through hole, the first through hole,
Second through hole and the 4th circulation passage all do not connect with third through-hole, the 4th circulation passage respectively with the first through hole and
Second through hole connects.
Using the motor-driven valve of this spline structure, Single port that can not only be selective connects with other port, additionally it is possible to realizes
It is connected between remaining port, including multiple patterns, can have a wide range of application, and it is simple in construction.
Brief description of the drawings
Fig. 1 is a kind of diagrammatic cross-section of embodiment of motor-driven valve of the present invention；
Fig. 2 is diagrammatic cross-section of the motor-driven valve shown in Fig. 1 at the first circulation passage and second this position of circulation passage；
Fig. 3 is the schematic perspective view of electric valve body in Fig. 1；
Fig. 4 is the diagrammatic cross-section of valve body in Fig. 3；
Fig. 5 is the structural representation of motor-driven valve support member in Fig. 1；
Fig. 6 is electric valve body schematic perspective view in Fig. 1；
Fig. 7 is the schematic top plan view of Fig. 6 valve bodies；
Fig. 8 is the structural representation of the valve seat of motor-driven valve shown in Fig. 1；
Fig. 9 is the structural representation of the valve block of motor-driven valve shown in Fig. 1；
Figure 10 is the inverted structure schematic diagram of Fig. 9 valve blocks；
Figure 11 is the sectional view of line A-A in Fig. 9；
Figure 12 is the diagrammatic cross-section of the rotary shaft of motor-driven valve in Fig. 1；
Figure 13 is motor-driven valve in Fig. 1 in the first mode of operation valve block and seating position relation schematic diagram；
Figure 14 is motor-driven valve in Fig. 1 in the second mode of operation valve block and the schematic diagram of seating position relation；
Figure 15 is motor-driven valve in Fig. 1 in the 3rd mode of operation valve block and the schematic diagram of seating position relation；
Figure 16 is motor-driven valve in Fig. 1 in the 4th mode of operation valve block and the schematic diagram of seating position relation；
Wherein dotted line is illustrated as invisible part.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment of the present invention is illustrated.
The present embodiment discloses a kind of motor-driven valve, can apply to the refrigerating circuits such as automotive air-conditioning system.It refer to Fig. 1 extremely
Fig. 3, motor-driven valve 100 include valve body 1, rotary shaft 2, core assembly and drive device 3.Wherein valve body 1 has chamber 101, valve element group
Part is arranged in chamber 101.The one end of chamber 101 is hatch frame, and the valve body 1 can be made up of metal material, such as aluminium.
Valve body 1 includes the valve body 1011 with hatch frame and the cover plate 1012 with the fixed setting of above-mentioned valve body 1011
Form, cover plate 1012 is arranged at the openend of valve body 1, and central position is provided with mounting hole 1012', the valve body 1011 and
Cover plate 1012 can carry out assembling fixation by modes such as riveting or screws, and the cover plate 1012 can also be by metal material system
Into.
In order to improve the sealing of valve body 1, refrigerant is avoided to be leaked out from chamber 101, can also be in above-mentioned valve body 1011
Set between the end 1012a that the end 1011a being in contact with cover plate 1012 is in contact with cover plate 1012 with valve body 1011 close
Seal.
The valve body 1 is fixedly installed with drive device 3, is such as connected by attachment means or solid by screw
It is fixed.One end of the rotary shaft 2 is driven by the actuating unit of drive device 3, and the other end passes through the mounting hole on cover plate 1012
1012' is connected with core assembly, and drive device 3 can drive rotary shaft 2 to act, and the action of rotary shaft 2 can be with movable valve plug group
Part acts, so as to which drive device 3 can drive core assembly action by rotary shaft 2 to change the position of core assembly, so as to
Realize the conversion of the different working modes of motor-driven valve.
The valve body 1 can be cuboid, it include first side 010 (being in the illustrated embodiment right flank),
The second side 020 (be in the illustrated embodiment front) adjacent with the first side 010 and described first, second
The 3rd vertical side 030 (being in the illustrated embodiment downside) of side 010,020 and the 4th side 040 (are being schemed
It is upper side in the embodiment shown), the openend of valve body 1 is located at the 4th side 040.
The valve body 1 includes being located at the 4th circulation passage 11 of the first side 010 through valve wall and one end port, passing through
Wear valve wall and one end port is located at the first circulation passage 12 and the second circulation passage 13 and through valve of the 3rd side 030
Wall and one end port are located at the 3rd circulation passage 14 of the second side 020, and the 4th circulation passage 11 connects with chamber 101, lead to
Refrigerant can be imported by crossing the 4th circulation passage 11, and in the present embodiment, the 4th circulation passage 11 is used as refrigerant introduction channel.At this
In embodiment, the first circulation passage 12, the second circulation passage 13, the 3rd circulation passage 14 and the 4th circulation passage 11 arrangement compared with
To be reasonable so that do not produce interference between each circulation passage, be also beneficial to the installation of motor-driven valve and the installation of external pipeline.
As shown in figure 4, the 3rd circulation passage 14 is bending communicating passage in present embodiment, the 3rd circulation passage 14 includes
One generally vertically extending straight to passage 141, interconnection 142 extended generally transverse, it is described directly to passage 141 and horizontal stroke
Connected to passage 142, illustrated with the orientation of accompanying drawing here；So as to realize the one of the 3rd circulation passage 14
End be located at the bottom of chamber 101 positioned at second side and the other end, makes each circulation passage connection and reasonable arrangement, and processes simply, and
One end port being located at due to circulation passage in valve body is taken over without setting, and need to set and connect positioned at one end port of second side
Pipe, this setup, the internal diameter of interconnection 142 can be made to be more than directly to the internal diameter of passage 141.It is first-class in the present embodiment
Circulation passage 12, the second circulation passage 13, the 3rd circulation passage 14 and the 4th circulation passage 11 include shoulder hole, to outside
Pipeline crimps；And may be used also positioned at the first side 010, the wherein at least one side of the side 030 of second side 020 and the 3rd
To set screw hole to be fixed with outer plane system, so as to realize stabilization of the motor-driven valve in system, be reliably connected.
The chamber 101 has stair-stepping structure, and chamber 101 includes the first chamber 1013, the second chamber 1014 and the 3rd chamber 1015,
4th circulation passage 11 connects 1013 with the first chamber, first step portion of the inwall formed with relatively close openend of chamber 101
101a and the second step portion 101b of the bottom of relatively close chamber 101, first step portion 101a are located at the first chamber 1013 and second
Between chamber 1014, second step portion 101b is between the second chamber 1014 and the 3rd chamber 1015, the first circulation passage 12, second
Wherein one end of the circulation passage 14 of circulation passage 13 and the 3rd is located at the bottom of the 3rd chamber 1015.
Core assembly includes valve seat 5 and valve block 6, and one end of valve block 6 is limited in one end of rotary shaft 2, the other end of valve block 6
Be slidably matched between valve seat 5, being slidably matched here refer to valve block 6 under the dynamic action of rotary shaft can opposite valve seat 5 can
Slidably act and rotate in other words.Between the mating part of valve block 6 and valve seat 5 gap can with relatively small and refrigerant can not be from valve
Interior leakage in other words is directly flowed through between block 6 and the mating part of valve seat 5 can be smaller.In order to limit the rotation process of rotary shaft 2
Middle 6 issuable axial displacement of valve block, make the plane base for being engaged part of plane and the valve seat 5 of the mating part of valve block 6
This fitting, support member 4 can also be set in intracavitary, the main body of support member 4 can be located at the first chamber 1013.Specifically, support member 4
It is fixedly mounted with the first step portion 101a, the support member 4 can be fixed by screw and the phase of valve body 1.As shown in figure 5, branch
Support member 4 can be platy structure, including one be substantially in fan shape plate body 41, and both sides have a recess 42, recess 42 with
Kept at a distance between the inwall of first chamber 1013 space structure formed with cooling matchmaker circulation, and recess 42 and the first chamber is interior
Space structure between wall connects with the second chamber.The plate body 41 also may pass through including rotary shaft 2 and limit rotary shaft 2 and radially moves
The first dynamic axis hole 411, rotary shaft 2 can pass through the first axis hole 411 and freely rotate.Other support member 4 also include to
The screw mounting hole 412 of fixed support portion, screw mounting hole quantity here can be set according to actual conditions, as long as can
Satisfaction is fixed on above-mentioned support member 4 in valve body 1011, and in present embodiment, screw mounting hole is 5, also may be used in addition
To be that two or screw mounting hole are realized along with positioning hole and fixed.Other support member can also have stage portion, make it
Protruded with the part that valve block 6 coordinates to valve Block direction, and set flexible member such as flat spring to abut valve block 6 at a position, or
Person directly or indirectly abuts valve block 6 using structures such as helical springs, valve block 6 is bonded substantially in mating part with valve seat.
Fig. 6, Fig. 7 are refer to, Fig. 6 is electric valve body schematic perspective view, and Fig. 7 is Fig. 6 top view.It can be seen by Fig. 6
Go out, the second chamber 1014 and the 3rd chamber 1015 are set for concentric circles, and the first chamber 1013 is set for the eccentric with the 3rd chamber 1015, so set
Put, on the one hand can increase the contact area of support member 4 and first step portion 101a, so as to improve the stability of support member, separately
On the one hand the space that cooling matchmaker between the inwall of the chamber 1013 of support member recess 42 and first circulates can be increased, improve refrigerant stream
Dynamic speed, prevent from increasing the flow resistance of refrigerant.
In said structure, second step portion 101b can be half circular ring, and a part of inwall shape of the second chamber
As the first stop part 101b' and the second stop part 101b ", the two of the second chamber end is as the first stop part in other words
101b' and the second stop part 101b ", because at least a portion of valve block 6 is located at the second chamber 1014, valve block 6 turns with rotary shaft
During dynamic, the first stop part 101b' and the second stop part 101b " can limit the motion row of the both direction of valve block 6 respectively
Journey.
The bottom wall part of chamber 101 of valve seat 5 and valve body is fixedly mounted, and the material of valve seat 5 here can be ceramic material, and logical
Screw is crossed to fix with the phase of valve body 1011.The structure of valve seat 5 is as shown in figure 8, the valve seat 5 includes circular body 51, body
51 include the second axis hole 52 and at least two screw mounting holes 53 with the interference fit of locating shaft 7, the second axis hole 52 of body 51
Can also be interference fits with locating shaft 7, locating shaft 7 can be interference fitted and fix with valve body 1011.Present embodiment
Middle screw mounting hole 53 is arranged to 3, and in contrast, three screws both can be with fixed valve base 5, and and can ensures that ceramic valve seat 5 exists
In one plane, when avoiding that stress is larger or vibration is larger, ceramic valve seat 5 easily cracks and have impact on making for refrigerant valve
Use the life-span.Screw mounting hole 53 is counterbore, and screw can sink to screw mounting hole 53, can so prevent screw from influenceing valve block and valve
Sealing between seat.Can also be fixed by modes such as rivetings on other valve seat, riveting can be set to use in such valve seat
Hole, and it is not limited to screw mounting hole.
The body 51 is additionally provided with the first through hole 511 connected with first circulation passage 12 and the second circulation passage
The second through hole 512 and the third through-hole 513 with the 3rd circulation passage 14 of 13 connections.The present embodiment first through hole 511, second is logical
Hole 512 and third through-hole 513 are circular port, and the third through-hole is between the first through hole and the second through hole,
Distance phase of the center at the center of first through hole 511, the center of the second through hole 512 and third through-hole 513 to the center of body 51
Together.This setup is not only convenient for processing, and first through hole 511, the second through hole 512 and third through-hole 513 can be made to exist
On the premise of not interfering so that first through hole 511 and the distance between third through-hole 513 are relatively small, the second through hole 512 and
The distance between three through holes 513 are relatively small, so as to relatively reduced valve block 6, reduce the contact between valve block 6 and valve seat 5
Area, so as to reduce the frictional force between valve block 6 and valve seat 5, reduce the torque demand to drive device 3.Certainly, actually set
When putting, it is for example oval, square etc. that first through hole 511, the second through hole 512 and third through-hole 513 can also be set to other shapes
It is possible；In addition to the requirement of flow control, can also be various abnormally-structured.
The flow area of the through hole 512 of first through hole 511 and second is more than the flow area of third through-hole 513, in this implementation
Example, the diameter of the through hole 512 of first through hole 511 and second are more than the diameter of third through-hole 513.In systems, because third through-hole
513 connect with the 3rd circulation passage 14, then are connected with compressor, and the setting of the diameter of third through-hole 513 is smaller, and refrigerant can be made slow
Be back to compressor, therefore the demand that refrigerant slowly reclaims can be realized.
The bottom of valve seat 5 and chamber 101 is fixedly mounted by screw, in order to prevent refrigerant in valve seat 5 and the contact portion of chamber 101
Seepage is produced, at least three sealing rings are additionally provided between the bottom of valve seat 5 and chamber 101, (the 3rd circulation is logical as shown in Figure 2
Road is not shown), at least one sealing ring crowds around first through hole 511, and at least another sealing ring crowds around the second through hole 512, at least
Another sealing ring crowds around third through-hole 513.This setup can effectively reduce interior leakage.In addition can also be different using one
Type seal, make separated from each other between three circulation passages.
Fig. 9 to Figure 11 is refer to, Fig. 9 is the axonometric schematic diagram of valve block, and Figure 10 is structure when valve block is inverted shown in Fig. 9
Schematic diagram, Figure 11 are sectional views of the Fig. 9 along A-A directions, and the valve block 6 is similar to a sector structure, including matrix 61, Yi Jicong
The flange part 62 and limiting section 63 that the lateral radial direction in the periphery of matrix 61 is provided projectingly, flange part 62 and limiting section 63 are located at phase
To position.The second end face 632 of the limiting section 63 including relatively close second step face, be relatively distant from second step face the
End face 631 and positioned at the end 634 of first end 633 and second of opposite sides, when limiting section first end 633 and first stops
Portion 101b' is abutted, or the second end 634, with the second stop part 101b " when abutting, the stopping of valve block 6 acts.It is spacing in the present embodiment
Portion is convex structure, and first end 633 links together with the second end 634, and limiting section can also be two set respectively in addition
It is individual it is spacing use end, i.e., respectively from the first end that matrix protrudes laterally and the second end, both can be not attached to together.
The flange part 62 may be at same plane, the flange with the upper surface of limiting section 63 and the upper surface of matrix
The thickness in portion 62 can be identical with the thickness of matrix 61, and the thickness d 1 of the limiting section 63 is less than or equal to the thickness of described matrix 61
D, the depth d2 of second chamber is smaller than matrix thickness d, and the depth d2 of the second chamber is more than or equal to the thickness d 1 of the limiting section 63.
It can so make the depth d2 of the second chamber 1014 relatively small, so as to be advantageous to the Milling Machining of the second chamber 1014, so as to drop
Low difficulty of processing.Other limiting section lower surface 632 can not contact with second step portion 101b, upper surface 631 not with First
The support member 4 installed on rank portion 101a contacts, and reduces the frictional force in the motion process of valve block 6.The flange part 62 is additionally provided with
Keyway 622 and the through hole 623 of insertion keyway 622 bottom, rotary shaft 2 are engaged fixation, described matrix portion with keyway 622
The 612a of a groove is additionally provided with 61 lower surfaces 612.As shown in figure 9, the upper surface 611 in described matrix portion is also provided with two
Individual spacing hole 611a.Here it should be noted that spacing hole 611a and groove 612a are blind hole structure.
The edge of limiting section 63 is less than the inwall of the second chamber to through hole to the ultimate range between the center of through hole 623
Ultimate range between 623 center, the edge of matrix 61 are less than the 3rd chamber to the ultimate range between the center of through hole 623
Inwall to the ultimate range between the center of through hole 623.Valve block can be so set not connect in action with the inwall of chamber
Touch, reduce the abrasion of valve block, can also reduce friction.
Figure 12 is refer to, Figure 12 is the schematic diagram of rotary shaft 2, and rotary shaft 2 includes a generally cylindrical shaft body
21 and the auxiliary section 22 of one end that is connected with valve block 6 of the rotary shaft 2, and the rotary shaft its be connected with valve block 6 one
End is provided inwardly with location indentations 24 from its end face 23, and the location indentations 24 are fitted with locating shaft 7, the locating shaft 7 it is another
Hold the through hole 623 through valve block 6, the second axis hole 52 of valve seat 5 is realized with the interference fit of valve body 1 and fixed；Rotary shaft 2 by with
Conjunction portion 22 is crimped on the cooperation realized in keyway 622 with valve block 6, when drive device 3 drives rotary shaft 2 to act, the energy of rotary shaft 2
Enough band movable valve blocks 6 and the relative motion of valve seat 5.In the present embodiment, valve block 6 is that ceramic material is made with valve seat 5, compared to it
For his material, the valve block and bottom plate of ceramic material, frictional force is smaller, not easy to wear, also being capable of relatively reduced interior leakage.And institute
It can be a similar sector structure to state ceramic valve block 6, thus relatively small with the contact area of valve seat 5, can reduce both
Frictional force in sliding process, so as to reduce the requirement to moment of torsion, the size of drive device can be reduced, advantageously reduced into
Originally the installing space of product weight and reduction in systems, is mitigated.
With regard to valve block, sliding process just further describes on valve seat below, and the action process of core assembly includes the first work
Pattern, the second mode of operation, the 3rd mode of operation and the 4th mode of operation.It is the first mode of operation of motor-driven valve as shown in figure 13
When valve block and valve seat position relationship schematic diagram, now valve block 6 and the first stop part 101b ' abut against, the matrix 61 of valve block 6 covers
The second through hole 512 and third through-hole 513 have been covered, the refrigerant of chamber 101 is flowed into by the recess of support member 4 from the 4th circulation passage 11
42 connect with first through hole 511, and export motor-driven valve through the first circulation passage 12.And the second through hole 512 and third through-hole 513 by
Stop in by valve block 6, the second through hole 512 does not connect with third through-hole 513 with the 4th circulation passage.Valve block in this specification
Matrix covering through hole refer to that its matrix covers the through hole on the valve seat, it may also be said to be in terms of overlook direction through hole by valve
The situation that block blocks.
The groove 612a of the bottom of valve block 6 connects with the part of the second through hole 512 and third through-hole 513 as can be seen from Fig.,
Pass through in terms of overlook direction formed with the first coincidence part 5121 and the second coincidence part 5131, i.e. the second through hole 512 with groove 612a
First coincidence part 5121 is connected, and third through-hole 513 is connected with groove 612a by the second coincidence part 5131 so that the second through hole
512 can be connected by groove 612a with third through-hole 513.So, refrigerant can be logical by the second circulation passage 13, second
Compressor is flowed into after hole, groove 612a, the 3rd circulation passage 14, recovery section refrigerant can be played a part of.This is logical simultaneously
The circulation area in road is relatively small, and in the present embodiment, the first coincidence part 5121 and the sectional area of the second coincidence part 5131 are smaller, keep away
Exempt from moment a large amount of refrigerants inflows to impact valve block 6, influence the sealing of valve block 6 and valve seat 5, additionally it is possible to make refrigerant slow
Flow to the 3rd circulation passage from the second circulation passage through groove.And now, groove 612a does not connect with screw mounting hole 53,
Or screw mounting hole 53 is completely covered in groove 612a, so it can prevent refrigerant from passing through between screw mounting hole 53 and valve block 6
Gap flow into groove 612a, interior leakage can be reduced.
When drive device 3 drives rotary shaft 2 to act, rotary shaft 2 is acted to position as shown in figure 14 with movable valve block 6, and this is
The position relationship schematic diagram of valve block and valve seat during the second mode of operation of motor-driven valve.As illustrated, the matrix 61 of valve block 6 covers
First through hole 511 and third through-hole 513, from the 4th circulation passage 11 flow into the refrigerant of chamber 101 by support member 4 and cavity wall it
Between space connected with the second through hole 512, and export motor-driven valve, and first through hole 511 and threeway through the second circulation passage 13
By being stopped by valve block 6, first through hole 511 does not connect with third through-hole 513 with the 4th circulation passage in hole 513.
The groove 612a of the bottom of valve block 6 partially overlaps and formed with first through hole 511 and third through-hole 513 as can be seen from Fig.
There are the 3rd coincidence part 5113 and the 4th coincidence part 5134 of the refrigerant that can circulate, first through hole 511 and groove 612a passes through the 3rd
Coincidence part 5113 is connected, and third through-hole 513 is connected with groove 612a by the 4th coincidence part 5134 so that first through hole 511 can
To be connected by groove 612a with third through-hole 513.So, the refrigerant connected through first through hole 511 can pass through first through hole
The first circulation passage 12, first through hole, groove 612a, third through-hole, then by the 3rd circulation passage 14 flow into compressor, energy
Enough play a part of recovery section refrigerant.Under such a mode of operation, the coincidence part 5113 of first through hole and overlapping for third through-hole
The sectional area of portion 5134 is smaller, and effect is identical with the first mode of operation, just repeats no more here.
The position relationship schematic diagram of valve block and valve seat when Figure 15 shows three mode of operation of motor-driven valve, now, valve block 6
Abutted against with the second stop part 101b ", the matrix 61 of valve block 6 does not cover first through hole 511, the second through hole 512 and third through-hole
513；It is a part of cold so as to flow into the refrigerant of chamber 101 from the 4th circulation passage 11 by the space between support member 4 and cavity wall
Matchmaker connects with first through hole 511, and a part of refrigerant connects with the second through hole 512, and a part of refrigerant connects with third through-hole 513.
Or the second end of the limiting section is relatively close but do not abut the second stop part, the valve block does not cover the second through hole and the 3rd
Through hole, the endless all standing first through hole of valve block are valve block covering part first through hole.
It is the 4th mode of operation of motor-driven valve as shown in figure 16, the matrix 61 of valve block 6 covers third through-hole 513, valve block 6
The part of matrix 61 covering the through hole 512 of first through hole 511 and second or valve block 6 matrix 61 do not cover first through hole 511 and
Second through hole 512, now the groove 612a of valve block bottom completely covers third through-hole 513, the 4th circulation passage 11 and the 3rd
Through hole 513 is not connected, and the 3rd circulation passage 14 is closed；So as to the 4th circulation passage 11 and first through hole 511, the second through hole 512
Uncovered the first breakthrough part 5112, the second breakthrough part 5122 are connected, and the refrigerant point of chamber 101 is flowed into from the 4th circulation passage 11
Is not flowed to by first breakthrough part 5112 uncovered with first through hole 511, the second through hole 512, the second breakthrough part 5122
One circulation passage 12 and the second circulation passage 13.
In addition, operating mode is complex in the process of running for automobile, vibration inevitably occurs, so as to cause motor-driven valve
Phenomena such as vibration causes valve block 6 and valve seat 5 to seal.In the present embodiment, can be in the spacing hole 611a above valve block 6
Position limiting structure 8 is set, as shown in figure 1, the position limiting structure 8 includes a spring 81 and spheroid 82, the spring 81 are placed on
Spacing hole 611a or other counterbores, the spheroid 82 is between valve block 6 and support member 4, and the spheroid 82 and the phase of spring 81
Abut, spring 81 is in compressive state.So there is certain spring force between support member and valve block, in valve block 6 with rotary shaft 2
In motion process, limitation axial movement, the effect of venting valve block 6 is served, ensure that valve block 6 is bonded with valve seat 5 all the time；And
It is rolling friction between spheroid 82 and support member 4, frictional force is also smaller.
Embodiments described above, electric valve include four kinds of mode of operations, and it is specifically used when can be selected according to system needs
Select the mode of operation wherein more than any two to use, such as the first mode of operation and the second mode of operation, such as only select two kinds of works
Operation mode, the status requirement of three through holes can reduce；And such set-up mode, the valve block of motor-driven valve can be located at not at present
Same position work, such motor-driven valve go for different systems, meet different needs.
It should be noted that：Above example is merely to illustrate the present invention and not limits technical side described in the invention
Case, although this specification with reference to the above embodiments to present invention has been detailed description, the common skill of this area
Art personnel should be appreciated that person of ordinary skill in the field still can modify or equivalent substitution to the present invention, and
All do not depart from the technical scheme of the spirit and scope of the present invention and its improvement, all should cover in scope of the presently claimed invention
It is interior.
Claims (11)
1. a kind of motor-driven valve, including valve body, core assembly and rotary shaft, the valve body is provided with chamber, and the core assembly includes
Valve seat and valve block, the valve seat are fixedly installed with the valve body, and the valve seat is arranged at the bottom of the chamber or close to the chamber
Bottom set, the valve seat is provided with first through hole, the second through hole and third through-hole, and the valve body includes running through the valve body
Valve wall the first circulation passage, the second circulation passage, the 3rd circulation passage and the 4th circulation passage, it is described it is first-class all
The wherein one end in road, the second circulation passage and the 3rd circulation passage is located at the bottom of the chamber, first circulation passage, second
Circulation passage and the 3rd circulation passage connect with first through hole, the second through hole and third through-hole respectively, the 4th circulation passage
Connected with the chamber；
The valve block is limited in the rotary shaft, and the valve block can be rotated and rotated with rotary shaft, and the valve block is in the rotation
Relatively described valve seat action when axle rotates, and the valve block is set in the fitting relative with the valve seat of the one side towards the valve seat
Put, the valve block sets fluted in the one side relative with the valve seat；
The motor-driven valve comprises at least the first mode of operation and the second mode of operation,
When motor-driven valve is in the first mode of operation, the valve block covers second through hole and third through-hole, the 4th circulation
Passage is connected with first through hole, and second through hole is connected by the groove with the third through-hole；
When motor-driven valve is in the second mode of operation, the valve block covers the first through hole and third through-hole, the 4th circulation
Passage is connected with the second through hole, and the first through hole is connected by the groove with third through-hole.
2. motor-driven valve according to claim 1, it is characterised in that the valve block includes matrix and outside described matrix
The flange part that the week side of boss is provided projectingly to radial direction, the groove are arranged at described matrix, and the flange part is additionally provided with keyway, institute
State rotary shaft to be equipped with the keyway, drive the valve block to act by the keyway when rotary shaft rotates；It is described
Motor-driven valve also includes drive device, and one end of the rotary shaft is set with drive device transmission, and the rotary shaft passes through institute
State drive device driving.
3. motor-driven valve according to claim 2, it is characterised in that the third through-hole is farthest from the center of the valve seat
Distance is less than or equal to the first through hole from the maximum distance at the center of the valve seat, and the third through-hole is from the valve seat
The minimum distance of the heart be more than or equal to the first through hole from the center of the valve seat minimum distance, the third through-hole with it is described
The distance of first through hole is less than second through hole and the distance of the first through hole, the third through-hole and described second
The distance of through hole is less than second through hole and the distance of the first through hole；The valve seat is additionally provided with least two fixations use
Hole, in the first mode of operation or the second mode of operation, in terms of overlook direction, the groove do not cover the fixing hole or
A hole is completely covered in the groove.
4. motor-driven valve according to claim 3, it is characterised in that the valve block at least with the valve seat opposite segments by
Ceramic material is made, and the valve seat is at least made of ceramic materials with the valve block opposite segments, in the valve seat and chamber
Seal is additionally provided between bottom, seal is mutually isolated the first through hole, the second through hole and third through-hole.
5. according to any described motor-driven valves of claim 1-4, it is characterised in that in first mode of operation, from vertical view
Direction sees that the groove is overlapped formed with the first coincidence part with the second throughhole portions and partly connected, the groove and threeway
Bore portion overlaps to form the second coincidence part and partly connect, and second through hole passes through first coincidence part, groove and second
Coincidence part connects with the third through-hole；
In second mode of operation, in terms of overlook direction, the groove partially overlaps triple formed with first through hole
Conjunction portion, the groove and third through-hole partially overlap formed with triple by described the with the 4th coincidence part, the first through hole
Conjunction portion, groove and the 4th coincidence part connect with the third through-hole.
6. according to the motor-driven valve described in any one of claim 1 to 5, it is characterised in that the chamber has openend, the chamber tool
There is stair-stepping structure, chamber includes the first chamber, the second chamber and the 3rd chamber, and the 4th circulation passage connects with the first chamber, described
The second step portion of the bottom in first step portion and relatively close chamber of the inwall of chamber formed with relatively close openend, institute
First step portion is stated between the first chamber and the second chamber, the second step portion is described between the second chamber and the 3rd chamber
Second step portion in substantially semi-annular shape structure, and the valve body formed in a part of inwall of second chamber it is restricted described
The first stop part and the second stop part of valve block actuating length；
The valve block also includes the limiting section and flange part being provided projectingly from the lateral radial direction in described matrix periphery, the flange
The relatively described limiting section in portion is close to the center of the valve body, and the limiting section is with respect to described matrix away from the flange part；
The limiting section includes first end, the second end in the first mode, and the first end of the limiting section stops with described first
Portion abuts against or relatively close first stop part.
7. motor-driven valve according to claim 6, it is characterised in that described matrix thickness d, the second chamber depth d2 and limiting section
Thickness d 1 meets：D ＞ d2 ＞ d1；The edge of the limiting section is less than described to the ultimate range between the center of the flange part
The inwall of second chamber to the ultimate range between the center of the flange part, described matrix edge to the center of the flange part it
Between ultimate range be less than the inwall of the 3rd chamber to the ultimate range between the center of the flange part.
8. motor-driven valve according to claim 7, it is characterised in that support member, the support are additionally provided with the valve body
Part is fixedly mounted with the first step portion, and the support member includes one substantially in the plate of fan shape in terms of overlook direction
Body, and both sides have recess, are kept at a distance between the recess and the inwall of the first chamber, and the recess and the first chamber is interior
Space structure between wall connects with second chamber, and the plate body includes the first axis hole, and the rotary shaft passes through the first axis hole
And can relative support rotate and set, first axis hole limits the rotary shaft and moved radially.
9. motor-driven valve according to claim 8, it is characterised in that：
The valve block is additionally provided with least one spacing hole close to the side of the support member, and the spacing hole is blind hole, described
Motor-driven valve is provided with a flexible member and spheroid in the spacing hole, and the spheroid is at least partially disposed at the spacing hole, described
Spheroid is between the valve block and support member and abuts support member, and one end of the spring and the bottom of the positioning hole offset
Connect, the other end of the spring abuts against with the spheroid, and the spring is in compressive state；
Or the support member has elastic component in the setting close to the side of the valve block, the flexible member side is connected to institute
State support member and opposite side abuts against with the valve block, the flexible member be located at the support member and the valve block it
Between.
10. motor-driven valve according to claim 9, it is characterised in that the Single port and second of first circulation passage
The Single port of circulation passage is located at threeth side relative with the bottom of the chamber, the Single port and the 4th of the 3rd circulation passage
The Single port of circulation passage is located at the second side and first side relative with the side wall of the chamber respectively, and the 3rd circulation is logical
Road includes a generally vertically extending straight interconnection extended generally transverse to passage and one；
The flow area of the first through hole and the second through hole is more than the flow area of the third through-hole, and the 3rd circulation is logical
The internal diameter that road is located at the port in the valve body is less than the internal diameter positioned at the port of the second side；
First circulation passage, the second circulation passage, the 3rd circulation passage and the 4th circulation passage include step structure；
And at least one in the first side of the valve body, second side and the 3rd side is provided with screw hole.
11. according to the motor-driven valve described in any one of claim 1 to 10, it is characterised in that the motor-driven valve also includes the 3rd work
Operation mode and the 4th mode of operation,
When motor-driven valve is in three mode of operations, the second end of the limiting section is abutted against with second stop part or the limit
Relatively close second stop part in second end in position portion, the valve block do not cover the second through hole and third through-hole, the valve block
Endless all standing first through hole, the 4th circulation passage connect with the first through hole, the second through hole and third through-hole respectively；
When motor-driven valve is in four mode of operations, the valve block covers third through-hole, valve block portion point covering first through hole or valve
Block does not cover first through hole, and valve block portion point the second through hole of covering or valve block do not cover the second through hole, the first through hole, second
Through hole and the 4th circulation passage all do not connect with third through-hole, the 4th circulation passage respectively with the first through hole and second
Through hole connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610525531.1A CN107542948B (en) | 2016-06-29 | 2016-06-29 | Electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610525531.1A CN107542948B (en) | 2016-06-29 | 2016-06-29 | Electric valve |
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| CN107542948A true CN107542948A (en) | 2018-01-05 |
| CN107542948B CN107542948B (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610525531.1A Active CN107542948B (en) | 2016-06-29 | 2016-06-29 | Electric valve |
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| CN (1) | CN107542948B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110735958A (en) * | 2018-07-20 | 2020-01-31 | 杭州三花研究院有限公司 | electronic expansion valve and thermal management assembly |
| CN111677681A (en) * | 2020-07-23 | 2020-09-18 | 浙江大自然户外用品股份有限公司 | Built-in type inflatable pump body |
| CN112443672A (en) * | 2019-08-30 | 2021-03-05 | 浙江三花智能控制股份有限公司 | Valve device |
| CN113117399A (en) * | 2019-12-30 | 2021-07-16 | 浙江三花智能控制股份有限公司 | Filter piece and have motorised valve of this filter piece |
| US11686512B2 (en) | 2018-07-20 | 2023-06-27 | Zhejiang Sanhua Intelligent Controls Co., Ltd | Electronic expansion valve, manufacturing method thereof, and thermal management assembly |
| EP4001711A4 (en) * | 2019-07-18 | 2023-08-16 | Zhejiang Sanhua Automotive Components Co., Ltd. | Control valve |
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| CN111677681A (en) * | 2020-07-23 | 2020-09-18 | 浙江大自然户外用品股份有限公司 | Built-in type inflatable pump body |
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|---|---|
| CN107542948B (en) | 2020-04-28 |
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