CN110529605A - Electric expansion valve - Google Patents
Electric expansion valve Download PDFInfo
- Publication number
- CN110529605A CN110529605A CN201810516848.8A CN201810516848A CN110529605A CN 110529605 A CN110529605 A CN 110529605A CN 201810516848 A CN201810516848 A CN 201810516848A CN 110529605 A CN110529605 A CN 110529605A
- Authority
- CN
- China
- Prior art keywords
- needle
- section
- screw rod
- electric expansion
- support frame
- 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
- 238000007789 sealing Methods 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000306 component Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 210000000664 rectum Anatomy 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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 seat includes installing port and valve port；Support frame, support frame are fixedly connected with valve seat, and at least partly support frame protrudes into valve support chamber by installing port, and support frame includes first section and second section；Needle, the outer wall of needle are adapted to the inner wall of second section, and at least partly needle is movably arranged at support frame, and first is provided with position limiting structure between section and needle；Screw rod can be rotated along the axis of itself, and screw rod is matched with needle by helicitic texture, and needle is under the drive of screw rod close to or far from valve port.The structure of electric expansion valve can be simplified by applying the technical scheme of the present invention, and improve assembly efficiency, 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, by drive part (coil 7, rotor 8) and flow control division point (nut 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 and retarder
Output end connection (screw rod 4 can rotate together with the output end of retarder, and screw rod 4 in its axial direction with retarder
The relative position of output end can change).Nut 3 is fixed on valve seat 9 and is threadedly coupled with screw rod 4, and needle 5 and screw rod 4 are solid
Fixed connection.Below under plain statement the product working principle: rotor 8 by coil 7 driving is rotated, the input shaft of retarder
It is rotated under the driving of rotor, after retarder slows down, the output end of retarder will be rotated with lesser revolving speed.Subtracting
Under the action of the output end of fast device, screw rod 4 carries out rotation.Screw rod 4 is by being threadedly engaged realization axial movement with nut 3.In silk
Under the action of bar 4, needle 5 carries out axial go up and down with close to or away from valve port 6.Although the electric expansion valve can be realized flow
Purpose is adjusted, but the structure of above-mentioned electric expansion valve 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 the structure of electric expansion valve, reduce
Production cost.
To achieve the goals above, the present invention provides a kind of electric expansion valves, comprising: valve seat has valve support chamber, valve seat
Including installing port and valve port；Support frame, support frame are fixedly connected with valve seat, and at least partly support frame protrudes into valve by installing port
Seat chamber, support frame include first section and second section；Needle, the outer wall of needle are adapted to the inner wall of second section, at least
Part needle is movably arranged at support frame, and first is provided with position limiting structure between section and needle；Screw rod, can be along itself
Axis rotation, screw rod matched with needle by helicitic texture, and needle is under the drive of screw rod close to or far from valve port.
It applies the technical scheme of the present invention, when screw rod rotation, the needle being threadedly engaged with it can be close or separate
Valve port is to realize the opening and closing of valve port.It is threadedly engaged since screw rod directly passes through with needle, without going through institute in background technique
The nut mentioned is attached, and reduces components, is simplified so that electric expansion valve product overall structure is realized, is reduced 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 structures when needle of the embodiment of electric expansion valve according to the present invention is connected to valve port to show
It is intended to；
Fig. 3 shows the enlarged structure schematic diagram at the A of the electric expansion valve of Fig. 2；
Fig. 4 shows the enlarged structure schematic diagram at the B of the electric expansion valve of Fig. 2；
Fig. 5 shows the vertical profile structural schematic diagram when needle evacuation valve port of the electric expansion valve of Fig. 2；
Fig. 6 shows the needle of the electric expansion valve of Fig. 2 and the vertical profile structural schematic diagram of support frame cooperation；
Fig. 7 shows the schematic perspective view of the support frame of the electric expansion valve of Fig. 2；
Fig. 8 shows the vertical profile structural schematic diagram of the support frame of Fig. 7；
Fig. 9 shows the schematic perspective view of the support frame lid of the electric expansion valve of Fig. 2；
Figure 10 shows the vertical profile structural schematic diagram of the support frame lid of Fig. 9；
Figure 11 shows the schematic perspective view of the needle of the electric expansion valve of Fig. 2；
Figure 12 shows the vertical profile structural schematic diagram of the needle of Figure 11；
Figure 13 shows the vertical profile structural schematic diagram of the valve seat of the electric expansion valve of Fig. 2；
Figure 14 shows the schematic perspective view of the valve seat body of the valve seat of Figure 13；
Figure 15 shows the schematic perspective view of the valve core case of the valve seat of Figure 13；And
Figure 16 shows the vertical profile structural schematic diagram of the valve core case of Figure 15.
Wherein, the above drawings include the following reference numerals:
1, valve support chamber；2, accommodating chamber；10, valve seat；11, valve seat body；12, valve core case；121, valve port；20, needle；21,
Needle ontology；211, needle roof；212, needle side wall；213, the first mounting hole；214, the second mounting hole；22, the first sealing
Structure；30, screw rod；32, step surface；50, driving mechanism；51, rotor；52, coil；60, position limiting structure；100, shell；130,
Support frame；135, first section；136, second section；137, annular groove；138, annular convex edge；140, second seals structure；
150, bulge-structure；160, the first groove；190, connection frame；200, needle chamber；230, installing port；240, support frame lid；242,
Guide cylinder.
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, Fig. 5 to Fig. 8 and Figure 13, in the present embodiment, electric expansion valve includes: valve seat 10, support frame
130, needle 20 and screw rod 30.Wherein, valve seat 10 has valve support chamber 1, and valve seat 10 includes installing port 230 and valve port 121.Branch
Support 130 is fixedly connected with valve seat 10, and at least partly support frame 130 protrudes into valve support chamber 1 by installing port 230, and support frame 130 wraps
Include first section 135 and second section 136.The outer wall of needle 20 is adapted to the inner wall of second section 136, at least partly needle
20 are movably arranged at support frame 130, are provided with position limiting structure 60 between first section 135 and needle 20, the not edge of needle 20
The axis rotation of itself.Screw rod 30 can be rotated along the axis of itself, and the position of screw rod 30 in the axial direction is constant, silk
Bar 30 is matched with needle 20 by helicitic texture, and 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, when screw rod 30 rotates, the needle 20 that is threadedly engaged with it can it is close or
Person realizes the opening and closing of valve port far from valve port.It is threadedly engaged since screw rod 30 directly passes through with needle 20, without going through back
The nut being previously mentioned in scape technology is attached, and reduces components, so that the assembly efficiency of electric expansion valve can be big
Big to improve, production cost substantially reduces.In addition, apply the technical scheme of the present invention, the outer wall of needle 20 and second section 136
Inner wall adaptation, is provided with position limiting structure 60 between needle 20 and first section 135.In said structure, the second of support frame 130
Cylinder section 136 can play guiding role to needle 20, so that needle 20 be avoided to generate beat phenomenon when moving；Positioned at first
Position limiting structure 60 between section 135 and needle 20 is restricted the rotation of needle 20 in circumferential direction, to guarantee valve
Needle 20 can move axially under the action of screw rod 30.Therefore, support frame 130 can play the work of guiding and limit simultaneously
With further reducing components, improve the assembly efficiency of electric expansion valve.
It should be noted that above-mentioned " position of screw rod 30 in the axial direction is constant " refers to two kinds of situations: the first
Situation, in the axial direction, the position of screw rod 30 are completely fixed；Second situation, upper screw rod 30 is due to tolerance in the axial direction
Influence is able to carry out very small-scale movement.In the present embodiment, above-mentioned " needle 20 is not rotated along the axis of itself " refers to
Two kinds of situations: the first situation, needle 20 is completely without rotation；Second situation, needle 20 is due to public affairs in circumferential direction
Difference influences to be able to carry out very small-scale rotation (rotation angle is small).
As shown in Fig. 2, Fig. 4, Fig. 5 to Fig. 8, in the present embodiment, support frame 130 is integrated machine-shaping structure, and first
Cylinder section 135 is located at outside valve support chamber 1, and second section 136 is located in valve support chamber 1, the setting of one of first section 135 and needle 20
There is bulge-structure 150, the other of first section 135 and needle 20 are provided with the first groove 160, bulge-structure 150 and
One groove 160 forms position limiting structure 60, and bulge-structure 150 can be moved axially along the first groove 160.Specifically, at this
In embodiment, needle 20 is threadedly engaged with screw rod 30.Screw rod 30 can rotation, and position in axial direction remains unchanged.Valve
Needle 20 in axial direction upper can move, and be unable to rotation.When screw rod 30 rotates, needle 20 has under the drive of screw rod 30
The trend of rotation, the side wall of the bulge-structure 150 between needle 20 and first section 135 will be by the first groove 160 at this time
Cell wall abuts, so that needle 20 is unable to rotation.But inside under externally threaded cooperation, needle 20 can be moved in axial direction
It is dynamic, to realize the opening and closing of valve port.Above structure is simple, easy to process.
As shown in Fig. 2, Fig. 5 to Fig. 8, in the present embodiment, the top of first section 135 is provided with the length extended downwardly
Slot, elongated slot form the first groove 160.Above structure is simple, easy to process and assembly.
As is illustrated by figs. 11 and 12, in the present embodiment, the first mounting hole 213 is provided at the top of the side wall of needle 20,
Bulge-structure 150 be pin, pin insertion the first mounting hole 213, part pin protrude from needle 20 side wall and with 160 phase of the first groove
Cooperation.Above structure is simple, easy to process.
As shown in Fig. 2, Fig. 5 and Figure 12, in the present embodiment, needle 20 includes needle ontology 21 and is arranged in needle sheet
First sealing structure 22 of 21 bottom of body, needle 20 are in full off state, and the first sealing structure 22 is contacted with valve port 121,
Needle ontology 21 includes needle roof 211 and needle side wall 212, and the second peace extended downwardly is provided on needle roof 211
Hole 214 is filled, helicitic texture is provided on the inner wall of the second mounting hole 214, screw rod 30 is threaded through in the second mounting hole 214 and and spiral shell
Line structure matches, and the first mounting hole 213 is set to the top of needle side wall 212 and extends internally.Above structure is simple, is easy to
It realizes.
Preferably, as shown in Figure 2 and Figure 5, in the present embodiment, it is provided with first interface and second interface on valve seat 10,
First interface is connected to valve port 121, has the needle chamber 200 be connected to valve port 121 in needle, first interface (standpipe connection) and
The formation of needle chamber 200 runs through, and the outer diameter of needle ontology 21 is equal to the latus rectum of valve port 121.When needle 20 is located at detent position, and it is cold
When matchmaker enters needle chamber 200 from first interface, needle 20 is blocked by downward difference force and downward driving force in valve port 121
Place, and it is maintained at detent position.Above-mentioned difference force is by the face between the sectional area of needle ontology 21 and the sectional area of valve port 121
What the effect of product moment and pressure was formed.Since the outer diameter of needle ontology 21 is equal to the latus rectum of valve port 121, difference force zero,
Therefore above structure no longer need by spring to core component apply it is downward support power, so even the latus rectum of valve port 121 becomes
Greatly, 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.
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, extremely such as Fig. 2
Shown in Fig. 6, in the present embodiment, electric expansion valve further include: support frame lid 240, lid are located at the top of first section 135, branch
Guide part is provided on support lid 240, guide part provides guiding role to screw rod 30.Above-mentioned guide part can make the axis of screw rod 30
Line is held in a predetermined position, to avoid the beat in rotation of screw rod 30, is finally solved needle 20 and is easy to hit with valve seat 10
The problem of.
As shown in Fig. 3, Fig. 9 and Figure 10, in the present embodiment, guide part is to be set to support frame lid 240 and upwardly extend
Guide cylinder 242, part screw rod 30 is arranged in guide cylinder 242, and step surface 32, guide cylinder are provided on the side wall of screw rod 30
242 top surface is contacted with step surface 32.Above structure is simple, easy to process.In addition, support frame lid 240 and first section
135 top is fixedly connected, and the gravity of support frame 130 is undertaken by valve seat 10.Since the top surface of guide cylinder 242 being capable of support level
Face 32, therefore the gravity of screw rod 30 and the needle 20 being threadedly coupled with screw rod 30 is undertaken by support frame 130, support frame 130 is again
By in above-mentioned weight transfer to valve seat 10, finally undertaken by valve seat 10.Therefore above structure can be avoided screw rod 30 in the axial direction
On move down.
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；Shell 100, it is fixed with valve seat 10
The top of valve seat 10 is connected and be located at, there is accommodating chamber 2, rotor 51, screw rod 30 and first equal position of section 135 in shell 100
In in accommodating chamber 2, the top of screw rod 30 and the roof of shell 100 are contacted.Above structure enables more accurate component
Inside shell 100, dust, steam are avoided contact with, to improve service life.In addition, the top of screw rod 30 and shell 100
Roof contact, can be avoided the upward play in rotation of screw rod 30.
As shown in fig. 6, in the present embodiment, being provided with second seals structure 140 between second section 136 and needle 20.
Above-mentioned second seals structure 140 can prevent first interface and second interface from passing through the seam between second section 136 and needle 20
Gap connection, and prevent from being in communication with the outside inside valve seat 10, so as to be effectively isolated the transmitting of about 20 pressure difference of needle, protect
Card needle 20 can be supported at valve port 121 under the action of difference force.
As shown in Figure 6 and Figure 8, in the present embodiment, the bottom of the inner wall of second section 136 is provided with annular groove 137, the
Two sealing structures 140 are the sealing ring being arranged in annular groove 137.Above structure is simple, easy to process and assembly.
As shown in Figure 6 to 8, in the present embodiment, annular convex edge 138, convex annular are provided on the outer wall of support frame 130
The junction for being located at first section 135 and second section 136 along 138, the lower surface of annular convex edge 138 and the upper surface of valve seat 10
It abuts.In said structure, the upper surface of valve seat 10 can play a supporting role to the lower surface of annular convex edge 138, to make
The gravity of support frame 130 can be undertaken by obtaining valve seat 10.Above structure is simple, easy to process.
In the present embodiment, support frame 130 is an integral molding structure.Above structure is simple, easy to process and production cost
It is low.
As shown in figure 13 to figure 16, in the present embodiment, valve seat 10 includes valve seat body 11 and valve core case 12, valve seat sheet
The bottom of body 11 is provided with opening, and valve core case 12 is arranged in opening, and valve port 121 is set to valve core case 12, valve seat body 11 with
The space that valve core case 12 is surrounded forms valve support chamber 1.Valve seat body 11, which stretches, to be formed.Above structure is simple, enables needle 20
It is enough to be smoothly filled on valve seat 10.It should be noted that valve seat body 11 in other embodiments can also by flushing technology or
Person's cold heading technique is integrally machined molding.
As shown in Figure 2 and Figure 5, in the present embodiment, rotor 51 is fixedly connected by connection frame 190 with screw rod 30, wherein
Rotor 51 and connection frame 190 are integrally formed.
The concrete scheme of the present embodiment is illustrated below with reference to actuation principle:
In the case where being arranged the excitation for being installed on the coil 52 of 100 peripheral part of shell effect, rotor 51 rotate driving
Screw rod 30 follows rotation, because the internal screw thread of the external screw thread and needle 20 of screw rod 30 screws togather effect, so that screw rod 30 drives
Needle 20 is moved axially upward.Needle 20 only carries out elevating movement without rotation in the axial direction, keeps the first of needle 20 close
Seal structure 22 is gradually distance from valve port 121.When being fixed on the pin of needle 20 and being abutted with support frame lid 240, the first of needle 20
Sealing structure 22 is maximum with respect to the distance of valve port 121, and it is also maximum for flowing through the cold medium flux of valve port 121 at this time；When by coil 52
Excitation effect rotor 51 when being reversely rotated, effect is screwed togather by the external screw thread and internal screw thread of screw rod 30, needle 20 is made to exist
It is moved downward on axial direction, the first sealing structure 22 of needle 20 moves closer to valve port 121 at this time, when being fixed on needle 20
When selling the lower end of the first groove 160 of relatively close first section 135, the first sealing structure 22 will be supported with valve port 121
It connects.
It following is a brief introduction of the installation steps of the electric expansion valve:
Step 1: 10 machine-shaping of A10 valve seat is simultaneously welded with the adapter tube of valve core case 12, first and the second adapter tube respectively
Connect fixation；
Step 2: A20 needle 20 is press-fitted by the lower end opening portion upside-down mounting of support frame 130 and is packed into
Step 3: after A30 is packed into valve seat 10 by second section 136 press-fitting of support frame 130, by support frame 130 and valve
Seat 10 is welded and fixed；
Step 4: A40 installs shell 100 and other component.
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 (12)
1. a kind of electric expansion valve characterized by comprising
Valve seat (10) has valve support chamber (1), and the valve seat (10) includes installing port (230) and valve port (121)；
Support frame (130), support frame as described above (130) are fixedly connected with the valve seat (10), at least partly support frame as described above (130)
It is protruded into the valve support chamber (1) by the installing port (230), support frame as described above (130) includes first section (135) and second
Cylinder section (136)；
Needle (20), the outer wall of the needle (20) are adapted to the inner wall of second section (136), at least partly described needle
(20) it is movably arranged at support frame as described above (130), is arranged between first section (135) and the needle (20) limited
Bit architecture (60)；
Screw rod (30) can be rotated along the axis of itself, and the screw rod (30) and the needle (20) are matched by helicitic texture
It closes, the needle (20) is under the drive of the screw rod (30) close to or far from the valve port (121).
2. electric expansion valve according to claim 1, which is characterized in that first section (135) is located at the valve seat
Outside, second section (136) is located in the valve support chamber (1) chamber (1), first section (135) and the needle (20)
One of be provided with bulge-structure (150), the other of first section (135) and the needle (20) are provided with
One groove (160), the bulge-structure (150) and first groove (160) form the position limiting structure (60), the protrusion
Structure (150) can be moved axially along first groove (160).
3. electric expansion valve according to claim 2, which is characterized in that be provided at the top of first section (135)
The elongated slot extended downwardly, the elongated slot form first groove (160).
4. electric expansion valve according to claim 2, which is characterized in that be provided at the top of the side wall of the needle (20)
First mounting hole (213), the bulge-structure (150) are pin, the pin insertion first mounting hole (213), described in part
Pin protrudes from the side wall of the needle (20) and matches with first groove (160).
5. electric expansion valve according to claim 4, which is characterized in that the needle (20) include needle ontology (21) with
And setting, in the first sealing structure (22) of needle ontology (21) bottom, the needle (20) is in full off state, described
First sealing structure (22) is contacted with the valve port (121), the needle ontology (21) include needle roof (211) and
Needle side wall (212) is provided with the second mounting hole (214) extended downwardly, second installation on the needle roof (211)
Be provided with the helicitic texture on the inner wall in hole (214), the screw rod (30) be threaded through in second mounting hole (214) and with
The helicitic texture matches, and first mounting hole (213) is set to the top of the needle side wall (212) and inwardly prolongs
It stretches.
6. electric expansion valve according to claim 1, which is characterized in that the electric expansion valve further include:
Support frame lid (240), lid are located at the top of first section (135), and support frame as described above lid is provided with guiding on (240)
Portion, the guide part provide guiding role to the screw rod (30).
7. electric expansion valve according to claim 6, which is characterized in that the guide part is to be set to support frame as described above lid
(240) and the guide cylinder (242) that upwardly extends, the part screw rod (30) are arranged in the guide cylinder (242), the screw rod
(30) it is provided on side wall step surface (32), top surface and the step surface (32) of the guide cylinder (242) contact.
8. 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)；
Shell (100), is fixedly connected with the valve seat (10) and is located at the top of the valve seat (10), and the shell (100) is interior
With accommodating chamber (2), the rotor (51), the screw rod (30) and first section (135) are respectively positioned on the accommodating chamber
(2) in, the top of the screw rod (30) and the roof of the shell (100) are contacted.
9. electric expansion valve according to claim 1, which is characterized in that second section (136) and the needle
(20) second seals structure (140) are provided between.
10. electric expansion valve according to claim 9, which is characterized in that the bottom of the inner wall of second section (136)
It is provided with annular groove (137), the second seals structure (140) is the sealing ring being arranged in the annular groove (137).
11. electric expansion valve according to claim 1, which is characterized in that be provided on the outer wall of support frame as described above (130)
Annular convex edge (138), the annular convex edge (138) are located at the connection of first section (135) and second section (136)
Place, the lower surface of the annular convex edge (138) is abutted with the upper surface of the valve seat (10).
12. electric expansion valve according to any one of claim 1 to 11, which is characterized in that support frame as described above (130) is
Integrated formed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810516848.8A CN110529605B (en) | 2018-05-25 | 2018-05-25 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810516848.8A CN110529605B (en) | 2018-05-25 | 2018-05-25 | Electronic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110529605A true CN110529605A (en) | 2019-12-03 |
| CN110529605B CN110529605B (en) | 2024-04-19 |
Family
ID=68656897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810516848.8A Active CN110529605B (en) | 2018-05-25 | 2018-05-25 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110529605B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704647A (en) * | 2022-04-22 | 2022-07-05 | 浙江三花智能控制股份有限公司 | Electric switching valve |
| WO2023098768A1 (en) * | 2021-03-17 | 2023-06-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003222260A (en) * | 2002-01-29 | 2003-08-08 | Saginomiya Seisakusho Inc | Electric control valve |
| JP2006010004A (en) * | 2004-06-28 | 2006-01-12 | Saginomiya Seisakusho Inc | Electric control valve |
| CN102853598A (en) * | 2011-06-27 | 2013-01-02 | 浙江三花股份有限公司 | Electronic expansion valve |
| JP2014137127A (en) * | 2013-01-18 | 2014-07-28 | Fuji Koki Corp | Motor-operated valve |
| CN107355546A (en) * | 2016-05-10 | 2017-11-17 | 浙江盾安人工环境股份有限公司 | Electric expansion valve |
-
2018
- 2018-05-25 CN CN201810516848.8A patent/CN110529605B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003222260A (en) * | 2002-01-29 | 2003-08-08 | Saginomiya Seisakusho Inc | Electric control valve |
| JP2006010004A (en) * | 2004-06-28 | 2006-01-12 | Saginomiya Seisakusho Inc | Electric control valve |
| CN102853598A (en) * | 2011-06-27 | 2013-01-02 | 浙江三花股份有限公司 | Electronic expansion valve |
| JP2014137127A (en) * | 2013-01-18 | 2014-07-28 | Fuji Koki Corp | Motor-operated valve |
| CN107355546A (en) * | 2016-05-10 | 2017-11-17 | 浙江盾安人工环境股份有限公司 | Electric expansion valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023098768A1 (en) * | 2021-03-17 | 2023-06-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| CN114704647A (en) * | 2022-04-22 | 2022-07-05 | 浙江三花智能控制股份有限公司 | Electric switching valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110529605B (en) | 2024-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106439072B (en) | A kind of electric expansion valve | |
| CN110529605A (en) | Electric expansion valve | |
| WO2019205689A1 (en) | Actuating system for use in driving valve to open and close | |
| US11846455B2 (en) | Valve needle assembly and electronic expansion valve having the valve needle assembly | |
| CN212131323U (en) | Electromagnetic valve | |
| US11333415B2 (en) | Electronic expansion valve | |
| WO2021174732A1 (en) | Actuating mechanism for rotary guide device and rotary guide device using same | |
| US20210071921A1 (en) | Electronic expansion valve | |
| JP2014518361A (en) | Flow control valve | |
| CN101135386A (en) | Electric valve | |
| KR102445410B1 (en) | electronic expansion valve | |
| CN101403438A (en) | Magnetic driving electronic expansion valve | |
| CN110296267B (en) | Electronic expansion valve | |
| CN113124185A (en) | Electronic expansion valve | |
| EP1367303B1 (en) | Gate valve apparatus | |
| CN111188912A (en) | Electromagnetic valve | |
| CN109869494A (en) | Electric expansion valve and refrigeration system with it | |
| CN108591122A (en) | A kind of protecgulum regulating device of blowdown self priming pump | |
| CN110529608A (en) | Electric expansion valve | |
| KR20200094213A (en) | Electronic expansion valve | |
| CN110529606A (en) | Electric expansion valve | |
| CN104879541A (en) | Proportioning valve | |
| CN109441272B (en) | Hinge | |
| JP2000266194A (en) | Two-stage type electric expansion valve | |
| CN110939775B (en) | Electronic expansion valve |
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 |