CN110529606A - Electric expansion valve - Google Patents
Electric expansion valve Download PDFInfo
- Publication number
- CN110529606A CN110529606A CN201810517510.4A CN201810517510A CN110529606A CN 110529606 A CN110529606 A CN 110529606A CN 201810517510 A CN201810517510 A CN 201810517510A CN 110529606 A CN110529606 A CN 110529606A
- Authority
- CN
- China
- Prior art keywords
- needle
- electric expansion
- screw rod
- valve
- valve seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Lift Valve (AREA)
Abstract
The present invention provides a kind of electric expansion valves, comprising: valve seat has valve support chamber and valve port；Needle, needle have internal thread part, and at least partly needle is movably disposed at valve support chamber；Screw rod, screw rod have external thread part, and screw rod can be rotated along the axis of itself, and screw rod is matched with needle by internal thread part and external thread part, and needle is under the drive of screw rod close to or far from valve port.Electronic expansion structure can be simplified by applying the technical scheme of the present invention, and reduce production cost.
Description
Technical field
The present invention relates to refrigeration control technical fields, in particular to a kind of electric expansion valve.
Background technique
In electronic expansion valve structure, as shown in Figure 1, by drive part (coil 7, rotor 8) and flow control division point (spiral shell
Mother 3, screw rod 4, shell, needle 5, valve seat 9, adapter tube etc.) composition.Specifically, rotor 8 is connect with the input terminal of retarder, screw rod 4
(screw rod 4 can rotate together with the output end of retarder, and screw rod 4 is in its axial direction with the connection of the output end of retarder
It can change with the relative position of the output end of retarder).Nut 3 is fixed on valve seat 9 and is threadedly coupled with screw rod 4, needle 5
It is fixedly connected with screw rod 4.Below under plain statement the product working principle: rotor 8 by coil 7 driving is rotated, slow down
The input shaft of device rotates under the driving of rotor, after retarder slows down, the output end of retarder will with lesser revolving speed into
Row rotation.Under the action of the output end of retarder, screw rod 4 carries out rotation.Screw rod 4 is by being threadedly engaged realization axis with nut 3
To movement.Under the action of screw rod 4, needle 5 carries out axial go up and down with close to or away from valve port 6.Although the electric expansion valve energy
Enough realize the adjusting purpose of flow, but screw rod 4 has to that needle 5 can be driven by with being threadedly engaged for nut 3 when actuation
Axial elevating movement, electric expansion valve overall structure is complex, high production cost.
Summary of the invention
The main purpose of the present invention is to provide a kind of electric expansion valves, can simplify electronic expansion structure, reduce production
Cost.
To achieve the goals above, the present invention provides a kind of electric expansion valves, comprising: valve seat, have valve support chamber and
Valve port；Needle, needle have internal thread part, and at least partly needle is movably disposed at valve support chamber；Screw rod, screw rod have outer spiral shell
Line portion, screw rod can be rotated along the axis of itself, and screw rod is matched with needle by internal thread part and external thread part, and needle is in silk
Close to or far from valve port under the drive of bar.
It applies the technical scheme of the present invention, the needle of electric expansion valve has internal thread part, and screw rod has external thread part, silk
Bar and needle are cooperated by internal thread part and external thread part.When screw rod rotation, the needle that is threadedly engaged with it can it is close or
Person is far from valve port.Be threadedly engaged since screw rod directly passes through with needle, eliminate the nut part being previously mentioned in background technique and
It is simplified the overall structure of electric expansion valve, can reduce production cost.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram of internal structure of electric expansion valve in the prior art；
Fig. 2 shows the vertical profile structural schematic diagrams of the embodiment of electric expansion valve according to the present invention；
Fig. 3 shows the enlarged structure schematic diagram at the A of the electric expansion valve of Fig. 2；
Fig. 4 shows the vertical profile structural schematic diagram of the part-structure of the electric expansion valve of Fig. 2；
Fig. 5 shows the schematic perspective view of the support frame of the electric expansion valve of Fig. 2；
Fig. 6 shows the vertical profile structural schematic diagram of the support frame of Fig. 5；
Fig. 7 shows the schematic perspective view of the valve seat body of the electric expansion valve of Fig. 2；
Fig. 8 shows the vertical profile structural schematic diagram of the valve seat body of Fig. 7；
Fig. 9 shows the schematic perspective view of the sleeve of the electric expansion valve of Fig. 2；
Figure 10 shows the vertical profile structural schematic diagram of the sleeve of Fig. 9；
Figure 11 shows the schematic perspective view of the needle of the electric expansion valve of Fig. 2；And
Figure 12 shows the vertical profile structural schematic diagram of the needle of Figure 11.
Wherein, the above drawings include the following reference numerals:
1, valve support chamber；2, accommodating chamber；10, valve seat；11, valve seat body；111, the second roof；112, second sidewall；113,
Second guide cylinder；114, annular groove；12, valve core case；121, valve port；20, needle；21, needle ontology；211, the second hole；
212, threaded hole；22, sealing；30, screw rod；40, support frame；41, the first roof；411, the first hole；412, the first guide cylinder；
42, the first side wall；421, groove；50, driving mechanism；51, rotor；52, coil；60, position limiting structure；70, raised；80, it seals
Structure；90, sleeve；91, barrel；92, annular convex edge；100, shell；200, needle chamber.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Fig. 2 to Fig. 4, Figure 11 and Figure 12, in the present embodiment, electric expansion valve include valve seat 10, needle 20 with
And screw rod 30.Valve seat 10 has valve support chamber 1 and valve port 121.Needle 20 has internal thread part, and at least partly needle 20 is removable
Ground is arranged in valve support chamber 1.Screw rod 30 has external thread part, and screw rod 30 can be rotated along the axis of itself, screw rod 30 and needle 20
It is matched by internal thread part and external thread part, needle 20 is under the drive of screw rod 30 close to or far from valve port 121.
Using the technical solution of the present embodiment, the needle 20 of electric expansion valve has internal thread part, and screw rod 30 has outer spiral shell
Line portion, screw rod 30 and needle 20 are cooperated by internal thread part and external thread part.When screw rod 30 rotates, the valve that is threadedly engaged with it
Needle 20 can adjust the cold medium flux of valve port 121 close to or far from valve port 121 to realize the opening and closing of valve port.Due to screw rod 30
With needle 20 directly by being threadedly engaged, the nut part being previously mentioned in background technique is eliminated, components, therefore electricity are reduced
The assembly efficiency of sub- expansion valve can greatly improve, while greatly reduce production cost.
It should be noted that in the present embodiment, the position of screw rod 30 in axial direction remains unchanged.It is above-mentioned along axial side
To position remain unchanged and refer to two kinds of situations: the first situation, in the axial direction, the position of screw rod 30 are completely fixed；
Second situation, the in the axial direction very small-scale movement since tolerances are able to carry out of upper screw rod 30.In the present embodiment,
Needle 20 is without rotation.Above-mentioned 20 not rotation of needle refers to two kinds of situations: the first situation, and needle 20 is completely without certainly
Turn；Second situation, in circumferential direction needle 20 since tolerances are able to carry out very small-scale rotation (rotation angle
It is small).
Screw rod 30 be it is elongated rod-shaped, there may be beats in rotation for screw rod 30, so that needle connected to it
20 also generate beat, ultimately cause needle 20 and are easy to generate impingement phenomenon with valve seat 10.To solve the above-mentioned problems, such as Fig. 2, figure
Shown in 4 and Fig. 6, in the present embodiment, electric expansion valve further includes support frame 40, and support frame 40 is fixedly connected with valve seat 10, branch
Support 40 is equipped with the first guide part, and the first guide part provides guiding role to screw rod 30.Above-mentioned first guide part can make screw rod
30 axis is held in a predetermined position, thus avoid screw rod 30 rotation when beat, finally solve needle 20 be easy and valve seat
The problem of 10 shock.
As shown in Figures 2 to 6, in the present embodiment, support frame 40 includes the first roof 41 and the first side wall 42, at least
Another part needle 20 is located at the inside of the first side wall 42, and the first guide part is for being arranged on the first roof 41 and extending downwardly
One guide cylinder 412, screw rod 30 are pierced by from the first guide cylinder 412 and cooperate with needle 20.Specifically, since support frame 40 is fixed
On valve seat 10, therefore the axis of the first guide cylinder 412 of support frame 40 is fixed.Since screw rod 30 is threaded through the first guide cylinder
412, the outer wall of screw rod 30 is adapted to the inner wall of the first guide cylinder 412, and the axis of screw rod 30 is fixed.Therefore, silk
Bar 30 will not generate beat phenomenon in rotation.
As shown in Figures 2 to 6, in the present embodiment, support frame 40 is fixedly connected with valve seat 10, support frame 40 and needle 20
One of setting fluted 421, the other of support frame 40 and needle 20 be provided with protrusion 70, raised 70 side wall with it is recessed
The cell wall of slot 421 contacts.Specifically, in the present embodiment, the internal thread part of needle 20 and the external thread part of screw rod 30 are matched
It closes.Screw rod 30 can rotation, and position in axial direction remains unchanged.Needle 20 in axial direction upper can move, and not
It can rotation.When screw rod 30 rotates, needle 20 has the trend of rotation under the drive of screw rod 30, at this time needle 20 and support frame
The side wall of protrusion 70 between 40 will be abutted by the cell wall of groove 421, so that needle 20 is unable to rotation.But in interior spiral shell
Under the cooperation of line portion and external thread part, needle 20 can be moved in axial direction, to realize the opening and closing of valve port.Above structure letter
It is single, it is easy to process.It should be noted that position limiting structure 60 is collectively formed to realize 20 not rotation of needle in groove 421 and protrusion 70.
As shown in Figures 2 to 6, Figure 11 and Figure 12, in the present embodiment, support frame 40 include the first roof 41 and first
Side wall 42, part needle 20 are located at 42 inside of the first side wall, are provided with the first hole 411, screw rod 30 from first on the first roof 41
Hole 411 is pierced by and cooperates with needle 20, and groove 421 is set to the bottom of the first side wall 42 and upwardly extends, the side wall of needle 20
On be provided with the second hole 211, protrusion 70 be the pin in the second hole 211 of insertion.Above structure is simple, easy to process.Preferably, In
In the present embodiment, support frame 40 can be formed by stretching integral, and the first guide cylinder 412 is formed by flanging process.Support frame 40
Press-fitting is packed into the upper end of valve seat 10 and is fixedly mounted by spot welding.
In the present embodiment, valve seat 10 is an integral molding structure and/or needle 20 is an integral molding structure, and/or support
Frame 40 is an integral molding structure.Above structure is simple, easy to process, high production efficiency.Specifically, valve seat 10 can by stamping,
Cold-heading part or tensioning member are integrally machined molding.
Needle 20 is in long tubular, and needle 20 is moved axially by the drive of screw rod 30, since there may be slight for screw rod 30
Beat phenomenon, it is thus possible to cause needle 20 to generate slight beat, ultimately cause needle 20 be easy with valve seat 10 generate hit
It hits.To solve the above-mentioned problems, as shown in Fig. 2 to Fig. 4, Fig. 7 and Fig. 8, in the present embodiment, it is provided with second on valve seat 10 and leads
To portion, the second guide part provides guiding role to needle 20.Above-mentioned second guide part can make the axis of needle 20 be maintained at pre-
Positioning is set, to avoid the beat when moving of needle 20, finally solves the problems, such as that needle 20 is easy to hit with valve seat 10.
As shown in Fig. 2 to Fig. 4, Fig. 7 and Fig. 8, in the present embodiment, valve seat 10 includes valve seat body 11 and valve core case
12, valve seat body 11 is integrated drawing and forming, and the bottom of valve seat body 11 is provided with opening, and valve core case 12 is arranged in opening,
Valve port 121 is set to valve core case 12, and the space that valve seat body 11 and valve core case 12 are surrounded forms valve support chamber 1, valve seat body 11
Including the second roof 111 and second sidewall 112, the second guide part is second for being set to the second roof 111 and extending downwardly
Guide cylinder 113, needle 20 penetrate valve support chamber 1 from the second guide cylinder 113, and opening is formed on the bottom of second sidewall 112.In this implementation
In example, the second guide cylinder 113 is structure as a whole with the second roof 111, it is preferable that the second guide cylinder 113 passes through flanging process shape
At.Above structure is simple, easy to process, does not have to that individual guide cylinder is arranged, and on the one hand improves production efficiency, on the other hand not
It must re-mold, reduce production cost.It should be noted that in the present embodiment, valve seat body 11 is integrated drawing and forming,
Above structure makes valve seat body 11 easy to process, at low cost.In addition, in the present embodiment, needle 20 is the side by upside-down mounting
Formula press-fitting is fitted into the second guide cylinder 113.
As shown in Fig. 2 to Fig. 4 and Fig. 8, in the present embodiment, annular groove 114, needle are provided on the second roof 111
Sealing structure 80 is provided between 20 and annular groove 114.Specifically, it is provided with first interface and second interface on valve seat 10,
First interface is connected to valve port 121, is had the needle chamber 200 being connected to valve port 121 in needle, is set between valve seat 10 and needle 20
It is equipped with sealing structure 80, is provided with friction-reducing structure between sealing structure 80 and needle 20.Above-mentioned sealing structure 80 can prevent
One interface and second interface are by the gap area between valve seat 10 and needle 20, and prevent 10 inside of valve seat from connecting with extraneous
It is logical, so as to be effectively isolated the transmitting of about 20 pressure difference of needle, guarantee that needle 20 can be supported under the action of difference force
At valve port 121.
When being moved due to needle 20 along its axial direction, it can be moved up and down relative to valve seat 10, therefore, over time, if
The sealing structure 80 set between is prone to wear, so that leakproofness is deteriorated.To solve the above-mentioned problems, such as Fig. 3 and Fig. 4 institute
Show, is provided with friction-reducing structure between sealing structure 80 and needle 20.Above structure can reduce the abrasion to sealing structure 80, from
And guarantee the sealing performance of sealing structure 80.
As shown in Figures 2 to 4, in the present embodiment, electric expansion valve further include: shell 100, the bottom position of shell 100
It is fixedly connected in annular groove 114 and with valve seat 10, there is accommodating chamber 2 in shell 100, screw rod 30 is located in accommodating chamber 2.On
It states the structure that structure enables screw rod 30, support frame 40 etc. more accurate to be contained in accommodating chamber 2, to improve electronic expansion
The service life of valve.
It should be noted that if accommodating chamber 2 and needle chamber 200 are disconnected, when needle 20 is supported in valve port
At 121, and when refrigerant enters needle chamber 200 from first interface (interface of vertical tube), the pressure of needle chamber 200 is much larger than accommodating chamber
2 pressure, such needle 20 will will receive upward difference force, may cause needle 20 far from valve port 121, so that needle
20 cannot keep detent position (needle 20 is connected to the position at valve port 121).At this point, only increasing driving force just can guarantee
Needle 20 is maintained at detent position.In order to avoid increasing driving force, in example 1, accommodating chamber 2 is connected to needle chamber 200.
Above structure to support at valve port 121 when needle 20, and when refrigerant enters needle chamber 200 from first interface, needle chamber 200
Pressure it is close with the pressure of accommodating chamber 2, such needle 20 will be greatly reduced by upward difference force, so that need not
Guarantee that needle 20 is maintained at detent position by increasing driving force.
As shown in Fig. 2, in the present embodiment, accommodating chamber 2 and needle chamber 200 pass through between internal thread part and external thread part
Gap connection.Above structure is simple, easy to process.
As shown in Fig. 2 to Fig. 4, Fig. 9 and Figure 10, in the present embodiment, sleeve 90 is provided on valve seat 10, sleeve 90 includes
Barrel 91 and the annular convex edge 92 being arranged on the inner wall of barrel 91, the lower surface of annular convex edge 92, sleeve 90 it is interior
Accommodation space is formed between wall and the upper surface of valve seat 10, sealing structure 80 is set to accommodation space.Above structure is simple, is easy to
Processing and assembly.It should be noted that in the present embodiment, sleeve 90 is packed into 10 upper end step of valve seat by press-fitting, and logical
Spot welding is crossed to be fixed on the step of valve seat 10.
As shown in Fig. 2, in the present embodiment, needle 20 is including needle ontology 21 and is set to 21 bottom of needle ontology
Sealing 22, the threaded hole 212 cooperated with screw rod 30 is provided on needle ontology 21, and the size of sealing 22 is greater than valve port 121
Latus rectum, the outer diameter of needle ontology 21 is equal to the latus rectum of valve port 121.Specifically, first interface (standpipe connection) and needle chamber 200
Formation runs through, and when needle 20 is located at detent position, and refrigerant enters needle chamber 200 from first interface, needle 20 is by downward
Difference force and the downward driving force of driving mechanism 50 block at valve port 121, and are maintained at detent position.Above-mentioned difference force is
It is formed by the effect of difference in areas and pressure between the sectional area of needle ontology 21 and the sectional area of valve port 121.Due to needle
The outer diameter of ontology 21 is equal to the latus rectum of valve port 121, therefore, difference force zero, and therefore above structure is no longer needed through spring to core
Body component apply it is downward support power, so even the latus rectum of valve port 121 becomes larger, driving force need not also become larger therewith.
In addition, needle 20 is by upward difference force when refrigerant enters 10 inside of valve seat from second interface (transverse tube interface)
And downward driving force, so that needle 20 blocks at valve port 121, and it is maintained at detent position.Above-mentioned difference force is by valve
What the effect of difference in areas and pressure between the sectional area of needle ontology 21 and the sectional area of valve port 121 was formed.Due to needle ontology
21 outer diameter is equal to the latus rectum of valve port 121, therefore, difference force zero.Since difference force is zero, the demand to driving force is big
It is big to reduce.
As shown in Fig. 2, in the present embodiment, electric expansion valve further include: driving mechanism 50, including rotor 51 and coil
52, rotor 51 is fixedly connected with screw rod 30, and rotor 51 drives screw rod 30 to rotate by coil 52.Above structure is simple, is easy to real
It is existing.Electric expansion valve by the valve port 121 of big orifice in this present embodiment is smaller to driving force demand, therefore, driving mechanism
50 coil need not hugeization design, to greatly reduce volume.
As shown in Fig. 2, be provided with the connection frame being connected between rotor 51 and screw rod 30 in shell 100, rotor 51 with
Connection frame is integrally formed.Screw rod 30 is fixed by connection frame and rotor 51.
In the following, specifically introducing the course of work of electric expansion valve:
Under the excitation effect for being arranged the coil 52 for being installed on the peripheral part of shell 100, rotor 51 carries out rotation to band
Dynamic screw rod 30 follows rotation, and screw rod 30 is only rotated, without actuation on axial direction.Because of the external thread part and valve of screw rod 30
The internal thread part of needle 20 screws togather effect, so that screw rod 30 drives needle 20 to move in the axial direction.Needle 20 is only in axial direction
Upper progress elevating movement and without rotation, so that the sealing 22 of needle 20 is gradually distance from valve port 121, be fixed on the pin of needle 20
When being abutted with the groove top wall of the groove 421 of support frame 40, the sealing 22 of needle 20 is maximum with respect to the distance of valve port 121,
It is also maximum for flowing through the cold medium flux of valve port 121 at this time.When the excitation effect rotor 51 by coil 52 is reversely rotated, In
The internal thread part of the external thread part and needle 20 of screw rod 30 screws togather under effect, and needle 20 can be transported downwards in the axial direction
It is dynamic.The sealing 22 of needle 20 moves closer to valve port 121 at this time, recessed when the relatively close support frame 40 of pin for being fixed on needle 20
When the lower end of slot 421, sealing 22 is abutted with valve port 121.
In the following, simply introducing the installation step of the electric expansion valve of the present embodiment:
Step 1: A10 valve seat body 11 is integrally machined after molding and obtains corresponding step dimension by simple Vehicle Processing, and
The first adapter tube has been welded and fixed at the first interface of valve seat body 11；
Step 2: needle 20 is press-fitted in the second guide cylinder 113 being fitted into valve seat body 11 by A20 in a manner of upside-down mounting；
Step 3: the lower end that valve core case 12 is welded and fixed with the second adapter tube afterwards with valve seat body 11 is welded and fixed A30；
Step 4: pin is packed into the second hole 211 of needle 20 (guarantee has second hole 211) by A40；
Step 5: press-fitting is packed into sleeve 90 after sealing structure 80 is packed into the upper end step portion of valve seat body 11 by A50, will cover
The upper end step portion spot welding of cylinder 90 and valve seat body 11 is fixed；
Step 6: support frame 40 is press-fitted by A60 to be packed into the stage portion of sleeve 90 and is welded and fixed；
Step 7: A70 is packed into rotor 51, and shell 100 and valve seat 10 are welded and fixed.
It should be noted that installing order except other step interchangeables outside A10-A30 in above step.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (14)
1. a kind of electric expansion valve characterized by comprising
Valve seat (10) has valve support chamber (1) and valve port (121)；
Needle (20), the needle (20) have internal thread part, and at least partly described needle (20) is movably disposed at described
Valve support chamber (1)；
Screw rod (30), the screw rod (30) have external thread part, and the screw rod (30) can rotate along the axis of itself, the silk
Bar (30) is matched with the needle (20) by the internal thread part and the external thread part, and the needle (20) is in the silk
Close to or far from the valve port (121) under the drive of bar (30).
2. electric expansion valve according to claim 1, which is characterized in that the electric expansion valve further include:
Support frame (40) is fixedly connected with the valve seat (10), and support frame as described above (40) is equipped with the first guide part, and described first leads
Guiding role is provided to the screw rod (30) to portion.
3. electric expansion valve according to claim 2, which is characterized in that support frame as described above (40) includes the first roof (41)
And the first side wall (42), at least needle described in another part (20) are located on the inside of the first side wall (42), described first leads
It is the first guide cylinder (412) for being arranged on first roof (41) and extending downwardly, screw rod (30) Cong Suo to portion
One guide cylinder (412) is pierced by and cooperates with the needle (20).
4. electric expansion valve according to claim 2, which is characterized in that support frame as described above (40) and the valve seat (10) are solid
Fluted (421) are arranged in fixed connection, one of support frame as described above (40) and the needle (20), support frame as described above (40) and institute
It states the other of needle (20) to be provided with raised (70), the cell wall of the side wall and the groove (421) of the protrusion (70) supports
Connect cooperation.
5. electric expansion valve according to claim 4, which is characterized in that support frame as described above (40) includes the first roof (41)
And the first side wall (42), at least needle described in another part (20) are located on the inside of the first side wall (42), first top
It is provided on wall (41) the first hole (411), the screw rod (30) is pierced by from first hole (411) and matches with the needle (20)
It closes, the groove (421) is set to the bottom of the first side wall (42) and upwardly extends, sets on the side wall of the needle (20)
It is equipped with the second hole (211), the protrusion (70) is the pin in insertion second hole (211).
6. electric expansion valve according to claim 2, which is characterized in that the valve seat (10) is an integral molding structure, and/
Or the needle (20) is an integral molding structure and/or support frame as described above (40) is an integral molding structure.
7. electric expansion valve according to claim 1, which is characterized in that be provided with the second guiding on the valve seat (10)
Portion, second guide part provide guiding role to the needle (20).
8. electric expansion valve according to claim 7, which is characterized in that the valve seat (10) include valve seat body (11) with
And valve core case (12), the integrated drawing and forming of the valve seat body (11), the bottom of the valve seat body (11) is provided with opening, institute
It states valve core case (12) to be arranged in the opening, the valve port (121) is set to the valve core case (12), the valve seat body
(11) space surrounded with the valve core case (12) is formed the valve support chamber (1), and the valve seat body (11) includes the second top
Wall (111) and second sidewall (112), second guide part are set to second roof (111) and extend downwardly
Second guide cylinder (113), the needle (20) penetrate the valve support chamber (1), described second side from second guide cylinder (113)
The opening is formed on the bottom of wall (112).
9. electric expansion valve according to claim 8, which is characterized in that be provided with annular on second roof (111)
Groove (114) is provided with sealing structure (80) between the needle (20) and the annular groove (114).
10. electric expansion valve according to claim 9, which is characterized in that the electric expansion valve further include:
Shell (100), the bottom of the shell (100) are located in the annular groove (114) and fix with the valve seat (10)
Connection, the shell (100) is interior to have accommodating chamber (2), and the screw rod (30) is located in the accommodating chamber (2).
11. electric expansion valve according to claim 1, which is characterized in that the valve seat (10) and the needle (20) it
Between be provided with sealing structure (80).
12. electric expansion valve according to claim 10, which is characterized in that be provided with sleeve on the valve seat (10)
(90), the sleeve (90) includes the annular convex edge of barrel (91) and setting on the inner wall of the barrel (91)
(92), shape between the lower surface of the annular convex edge (92), the inner wall of the sleeve (90) and the upper surface of the valve seat (10)
At accommodation space, the sealing structure (80) is set to the accommodation space.
13. electric expansion valve according to claim 1, which is characterized in that the needle (20) includes needle ontology (21)
And it is set to the sealing (22) of needle ontology (21) bottom, it is provided with and the screw rod on the needle ontology (21)
(30) threaded hole (212) cooperated, the helicitic texture in the threaded hole (212) form the internal thread part, the sealing
(22) size is greater than the latus rectum of the valve port (121), and the outer diameter of the needle ontology (21) is equal to the logical of the valve port (121)
Diameter.
14. electric expansion valve according to claim 1, which is characterized in that the electric expansion valve further include:
Driving mechanism (50), including rotor (51) and coil (52), the rotor (51) are fixedly connected with the screw rod (30),
The rotor (51) drives screw rod (30) rotation by the coil (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810517510.4A CN110529606B (en) | 2018-05-25 | 2018-05-25 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810517510.4A CN110529606B (en) | 2018-05-25 | 2018-05-25 | Electronic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110529606A true CN110529606A (en) | 2019-12-03 |
| CN110529606B CN110529606B (en) | 2022-04-29 |
Family
ID=68657070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810517510.4A Active CN110529606B (en) | 2018-05-25 | 2018-05-25 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110529606B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1219699A (en) * | 1969-01-16 | 1971-01-20 | Controls Co Of America | Improvements in and relating to temperature responsive valves |
| FR2065813A5 (en) * | 1969-10-01 | 1971-08-06 | Sno Trik Co | |
| JP2000346225A (en) * | 1999-03-26 | 2000-12-15 | Saginomiya Seisakusho Inc | Motor-operated valve |
| JP2003222260A (en) * | 2002-01-29 | 2003-08-08 | Saginomiya Seisakusho Inc | Electric control valve |
| JP2009275895A (en) * | 2008-05-19 | 2009-11-26 | Fuji Koki Corp | Flow control valve |
| JP2010043727A (en) * | 2008-07-16 | 2010-02-25 | Saginomiya Seisakusho Inc | Motor valve |
| CN102252119A (en) * | 2010-05-21 | 2011-11-23 | 浙江三花股份有限公司 | Electrically operated valve and heat exchange device comprising same |
| CN102297189A (en) * | 2010-06-25 | 2011-12-28 | 株式会社不二工机 | Female screw member, motor operated valve using same, and method for producing female screw member for motor operated valve |
| CN102853597A (en) * | 2011-06-27 | 2013-01-02 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN103867789A (en) * | 2012-12-11 | 2014-06-18 | 浙江三花股份有限公司 | Flow regulating valve |
| JP2014137127A (en) * | 2013-01-18 | 2014-07-28 | Fuji Koki Corp | Motor-operated valve |
| CN203926811U (en) * | 2014-06-13 | 2014-11-05 | 浙江升宏机械有限公司 | Modulating valve |
| JP2017227265A (en) * | 2016-06-22 | 2017-12-28 | 株式会社鷺宮製作所 | Electric operated valve |
-
2018
- 2018-05-25 CN CN201810517510.4A patent/CN110529606B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1219699A (en) * | 1969-01-16 | 1971-01-20 | Controls Co Of America | Improvements in and relating to temperature responsive valves |
| FR2065813A5 (en) * | 1969-10-01 | 1971-08-06 | Sno Trik Co | |
| JP2000346225A (en) * | 1999-03-26 | 2000-12-15 | Saginomiya Seisakusho Inc | Motor-operated valve |
| JP2003222260A (en) * | 2002-01-29 | 2003-08-08 | Saginomiya Seisakusho Inc | Electric control valve |
| JP2009275895A (en) * | 2008-05-19 | 2009-11-26 | Fuji Koki Corp | Flow control valve |
| JP2010043727A (en) * | 2008-07-16 | 2010-02-25 | Saginomiya Seisakusho Inc | Motor valve |
| CN102252119A (en) * | 2010-05-21 | 2011-11-23 | 浙江三花股份有限公司 | Electrically operated valve and heat exchange device comprising same |
| CN102297189A (en) * | 2010-06-25 | 2011-12-28 | 株式会社不二工机 | Female screw member, motor operated valve using same, and method for producing female screw member for motor operated valve |
| CN102853597A (en) * | 2011-06-27 | 2013-01-02 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN103867789A (en) * | 2012-12-11 | 2014-06-18 | 浙江三花股份有限公司 | Flow regulating valve |
| JP2014137127A (en) * | 2013-01-18 | 2014-07-28 | Fuji Koki Corp | Motor-operated valve |
| CN203926811U (en) * | 2014-06-13 | 2014-11-05 | 浙江升宏机械有限公司 | Modulating valve |
| JP2017227265A (en) * | 2016-06-22 | 2017-12-28 | 株式会社鷺宮製作所 | Electric operated valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110529606B (en) | 2022-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114483980B (en) | Electric valve and refrigeration cycle system | |
| US9366353B2 (en) | Control valve driven by stepping motor | |
| US9038659B2 (en) | Relief valve device | |
| US20110107998A1 (en) | Engine With Variable Compression Ratio | |
| KR102408886B1 (en) | Valve Core Assembly | |
| CN208252794U (en) | A kind of motor-driven valve | |
| CN102951200A (en) | Integral power steering apparatus | |
| CN109751428B (en) | Electronic expansion valve | |
| CN101135386A (en) | Electric valve | |
| KR20200066709A (en) | Solenoid valve | |
| KR20200125993A (en) | Electronic expansion valve | |
| WO2018062376A1 (en) | Motor-operated valve | |
| CN102252119A (en) | Electrically operated valve and heat exchange device comprising same | |
| CN110094525B (en) | Electrically operated valve and manufacturing method thereof | |
| CN111765288A (en) | Electronic expansion valve | |
| CN109538772B (en) | Electronic expansion valve | |
| CN110345267A (en) | A kind of motor-driven valve | |
| KR20200128568A (en) | Electronic expansion valve | |
| CN110296267B (en) | Electronic expansion valve | |
| CN110529606A (en) | Electric expansion valve | |
| CN110529605B (en) | Electronic expansion valve | |
| CN102788457A (en) | Electronic expansion valve | |
| KR102276928B1 (en) | electronic expansion valve | |
| CN111188912A (en) | Electromagnetic valve | |
| CN204175082U (en) | A kind of door operating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |