CN203431205U - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN203431205U CN203431205U CN201320498604.4U CN201320498604U CN203431205U CN 203431205 U CN203431205 U CN 203431205U CN 201320498604 U CN201320498604 U CN 201320498604U CN 203431205 U CN203431205 U CN 203431205U
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- CN
- China
- Prior art keywords
- opening
- radius
- diapire
- lower edge
- expansion valve
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- 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.)
- Expired - Lifetime
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- 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
Abstract
The utility model provides an electronic expansion valve. The electronic expansion valve comprises a valve body, a valve seat and an outlet connecting pipe. The valve body is provided with a bottom wall and a bottom wall opening, the valve seat penetrates through the bottom wall opening, and the valve seat and the outlet connecting pipe are connected in a sleeved mode. The valve seat comprises a main part, a stopping part and a necking down part, wherein the body part is matched with the bottom wall opening, the stopping part is located at the upper end of the body part and abuts against the inner side face of the bottom wall, and the necking down part is located at the lower end of the body part. The body part, the stopping part and the necking down part are defined with a body part radius, a stopping part radius and a necking down part radius respectively, wherein the stopping part radius is larger than the body part radius, and the body part radius is larger than the necking down part radius. The bottom wall opening is provided with an opening lower margin. The body part comprises an outer cylindrical surface which protrudes out of the opening lower margin. A step surface is formed on the transition portion between the body part and the necking down part. The outlet connecting pipe is arranged at the necking down part in a sleeved mode and stopped on the step surface. A gap for being filled with molten brazing flux is formed between the opening lower margin of the valve body and the end face of the connecting pipe, the gap can be easily filled with the flux, and welding quality is guaranteed.
Description
Technical field
The utility model relates to a kind of electric expansion valve, is the magnetic force producing by electromagnetic coil, realizes spool relative to the moving of valve core case, and to reach, controls uninterrupted object, is particularly suitable for air-conditioning refrigeration system.
Background technique
Electric expansion valve is a kind of components and parts of Electromagnetic Control, is used in the break-make of control media in industrial control system or the parameters such as flow of adjustment medium, thereby realizes the control of expection.In refrigeration system, electric expansion valve, for regulating the refrigerating capacity into vaporizer, is supplied with the refrigeration agent of optimal dose to vaporizer, guarantee the stable operation of refrigeration system.The electronic expansion valve structure of prior art, as disclosed a kind of electric expansion valve in Japan Patent (JP2009-162369), its discharge connection and valve seat directly insert welding, left and right is without supporting part, strength of connection only on the lower the adhesive strength of the very thin border annulus weld seam in the material thickness of connecting tube and valve seat and cooperation place guarantee, the welded seal of this welding line structure is not ideal enough, and adhesive strength is reliable not.Be installed in system, through vibration and highpressure, impact, exist and come off and the hidden danger of leaking.Equally, valve seat core is combined with valve seat, also has the poor defect of weldering knotting strength, when side connecting tube passes into high pressure, lower connecting tube passes into low pressure, and valve seat and cover body form airtight chamber when too high, valve seat core is subject to downward atmospheric pressure, if solder bond intensity is slightly poor, exists and comes off and the hidden danger of leaking.
Chinese invention patent discloses CN and has also disclosed a kind of electronic expansion valve structure No. 201010004831.8.Please, emphatically with reference to its accompanying drawing 6, described electric expansion valve comprises the first receiving cavity being jointly comprised of valve core case, valve seat and three parts of the first connecting tube and the second receiving cavity being comprised of valve seat and the first connecting tube.In welding process, scolder is placed near outside the second receiving cavity and flows into the first receiving cavity, thereby three parts are airtight fixing.Yet, because the seepage distance that scolder enters the first above-mentioned receiving cavity from the second receiving cavity is far away, it is inhomogeneous to permeate, cause often having between valve core case and other two parts weldering less than, weldering is not enough, weldering is not firm problem, welding quality is difficult to guarantee, also has hidden danger in use.
Given this, be necessary to design a kind of new electric expansion valve and solve the problems referred to above.
Model utility content
The technical problems to be solved in the utility model is: provide a kind of firm welding, the electric expansion valve of stable performance.
For achieving the above object, the utility model provides following technological scheme: a kind of electric expansion valve, described electric expansion valve comprises the valve body with diapire and diapire opening, be arranged in the valve seat of described diapire opening and the discharge connection being socketed with described valve seat, described valve seat comprises the main part coordinating with described diapire opening, be positioned at main part upper end and be resisted against the stopper part of inside bottom wall face and be positioned at the necking part of main part lower end, described main part, stopper part and necking part have defined respectively main part radius, stopper part radius and necking part radius, described stopper part radius > main part radius > necking part radius, described diapire opening has opening lower edge, described main part comprises the outer cylinder that protrudes described opening lower edge, the transition portion of described main part and necking part is formed with step surface, described discharge connection is sheathed on described necking part block in described step surface.Described discharge connection comprises pipe outer radius, pipe inside radius and takes over end face, described pipe outer radius > main part radius, described opening lower edge, adapter end face are formed for the gap that brazing solder melts rear filling jointly, position, scolder easy filling gap, thus welding quality guaranteed.
Further, the distance of described opening lower edge and step surface is 0.1mm ~ 1mm.
Further, the distance of described opening lower edge and step surface is 0.1mm ~ 0.2mm.
Further, the distance of described opening lower edge and step surface is 0.5mm ~ 1mm.
Further, described diapire opening is the perforate that the direct punching press of diapire plane forms, the outer side surface that the opening lower edge of described diapire opening is described diapire.
Further, described diapire opening has the mouth of pipe that stretches and form from diapire, the lower edge that the opening lower edge of described diapire opening is the described mouth of pipe downwards.
Compared with prior art, the utility model at least has the following advantages: described opening lower edge, adapter end face are formed for the gap that brazing solder melts rear filling jointly, position, scolder easy filling gap, thus guarantee welding quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model electric expansion valve.
Fig. 2 is the partial enlarged drawing that Fig. 1 centre circle shows A part.
Embodiment
Refer to Fig. 1 to Fig. 2, below in conjunction with accompanying drawing, describe the embodiment of the utility model electric expansion valve in detail.
The utility model electric expansion valve comprises: have diapire 10 and diapire opening 101 valve body 1, be arranged in described diapire opening 101 valve seat 2 and with the discharge connection 3 of described valve seat 2 sockets.Described valve seat 2 is for having the ladder cylinder of axis through-hole 20, comprise the main part 21 that coordinates with described diapire opening 101, be positioned at main part 21 upper ends and be resisted against the stopper part 22 of inside bottom wall face 102 and be positioned at the necking part 23 of main part 21 lower ends, described main part 21, stopper part 22 and necking part 23 define respectively main part radius R 1, stopper part radius R 2 and necking part radius R 3, described stopper part radius R 2> main part radius R 1> necking part radius R 3.Described diapire opening 101 has opening lower edge 103, and in the present embodiment, described diapire opening 101 is the perforate that the direct punching press of diapire 10 plane forms, and the opening lower edge 103 of described diapire opening 101 is the outer side surface of described diapire.Described main part 21 comprises the outer cylinder 211 that protrudes described opening lower edge 103, the transition portion of described main part 21 and necking part 23 is formed with the step surface 24 vertical with valve seat 2 axle center, and described discharge connection 3 is sheathed on described necking part 23 block in described step surface 24.Described valve seat 2 is in order to the step surface 24 of discharge connection described in block 3, and the outer cylinder 211 of exposed setting, make discharge connection 3 not contact valve body 1, reserve the gap that scolder enters, guarantee that valve body, valve seat and discharge connection three fully contact with melting scolder, improve welding quality and stability.And whole welding part is all placed in the outer surface of electric expansion valve, scolder is also all placed in the relatively outside of electric expansion valve, and loading procedure and concrete jointing state are all visual to be judged with being convenient to, and has reduced welding difficulty and rosin joint risk.It should be noted that, the surface coordinating with inside bottom wall face 102 just because of described stopper part 22 (not indicating) to the distance of step surface 24 is greater than described inside bottom wall face 102 to the distance of opening lower edge 103, is just formed the outer cylinder 211 of described exposed setting.
Described discharge connection 3 comprises pipe outer radius R4, pipe inside radius R5 and takes over end face 31, described pipe outer radius R4> main part radius R 1, described pipe inside radius R5 is suitable with necking part radius R 3, and described opening lower edge 103, adapter end face 31 are formed for the gap 32 that brazing solder melts rear filling jointly.Braze 40 is placed in opening lower edge 103 and contacts with adapter outer wall.Described opening lower edge 103 is preferably 0.1mm ~ 1mm with the distance of step surface 24, and braze 40 now enters gap 32 after melting and directly stopped the outside leakage problem of medium, and welding effect is good.
Described opening lower edge 103 is preferably 0.1mm ~ 0.2mm with the distance of step surface 24, braze 40 now enters gap 32 after melting and has directly stopped the outside leakage problem of medium, but gap is too little, scolder is not easy further infiltration, cannot guarantee the internal leakage between valve seat and adapter.
When the distance of described opening lower edge 103 and step surface 24 is 0.5mm ~ 1mm, braze 40 enters gap 32 and further infiltrates diapire opening 101 and the gap between valve seat necking part 23, the step 24 of valve body 10 and take over the gap between end face after melting, welding effect is better.
Described valve body 1 is the tubular of opening upwards, and the cover body 4 that Open Side Down is mounted on valve body 1 and an airtight valve pocket 5 of common airtight welding formation.Described cover body 4 outsides are provided with the coil (not shown) as stator component, cover body 4 inside be provided with magnet rotor 6 and be positioned at magnet rotor 6 axial location and with the screw mandrel 61 of magnet rotor 6 one motions.Described electric expansion valve is also provided with the fixing frame 7 being welded in valve pocket 5, and nut 8 is supported and fixed on fixing frame 7 still.After coil electricity, magnet rotor 6 rotates, thereby drive screw mandrel 61 to rotate, nut 8 is screw thread transmission with screw mandrel 61, in the rotary course of screw mandrel 61, is subject to the effect of static nut 8, screw mandrel 61 is come and gone on axial direction mobile, screw mandrel 61 drives the needle 62 of being located at its end to do traveling priority, thereby is controlled at the openings of sizes of axis through-hole 20, and then adjusts circulation and flow between entrance sleeve 9 and discharge connection 3.Described electric expansion valve is also provided with the spring 63 that needle 62 is flexibly remained on to screw mandrel 61 ends, to realize buffering, reset and the damping of adjustment process.The top of screw mandrel 61 is connected with pin 64 and spring guide rail 65, in spring guide rail 65, is connected with and leads moving plate 66, leads moving plate 66 and is pressed on cover body 4 inwalls, controls the rotation of magnet rotor 6.
In sum, these are only preferred embodiment of the present utility model, should not limit scope of the present utility model with this.In addition, diapire opening in the present embodiment is the perforate that the direct punching press of diapire plane forms, opening lower edge is the outer side surface of described diapire, and in some other embodiment, described diapire opening has the mouth of pipe that stretches and form from diapire downwards, now the opening lower edge of described diapire opening is the lower edge of the described mouth of pipe, and this does not also affect the realization of technical solutions of the utility model.Be that every simple equivalence of doing according to the utility model claims and description changes and modifies, all should still belong in the scope that the utility model contains.
Claims (6)
1. an electric expansion valve, described electric expansion valve comprises the valve body with diapire and diapire opening, be arranged in the valve seat of described diapire opening and the discharge connection being socketed with described valve seat, described valve seat comprises the main part coordinating with described diapire opening, be positioned at main part upper end and be resisted against the stopper part of inside bottom wall face and be positioned at the necking part of main part lower end, described main part, stopper part and necking part have defined respectively main part radius, stopper part radius and necking part radius, described stopper part radius > main part radius > necking part radius, described diapire opening has opening lower edge, described main part comprises the outer cylinder that protrudes described opening lower edge, the transition portion of described main part and necking part is formed with step surface, described discharge connection is sheathed on described necking part block in described step surface, it is characterized in that: described discharge connection comprises pipe outer radius, pipe inside radius and adapter end face, described pipe outer radius > main part radius, described opening lower edge, take over end face and be jointly formed for the gap that brazing solder melts rear filling.
2. electric expansion valve as claimed in claim 1, is characterized in that: the distance of described opening lower edge and step surface is 0.1mm ~ 1mm.
3. electric expansion valve as claimed in claim 2, is characterized in that: the distance of described opening lower edge and step surface is 0.1mm ~ 0.2mm.
4. electric expansion valve as claimed in claim 2, is characterized in that: the distance of described opening lower edge and step surface is 0.5mm ~ 1mm.
5. the electric expansion valve as described in any one in claim 1 to 4, is characterized in that: described diapire opening is the perforate that the direct punching press of diapire plane forms, the outer side surface that the opening lower edge of described diapire opening is described diapire.
6. the electric expansion valve as described in any one in claim 1 to 4, is characterized in that: described diapire opening has the mouth of pipe that stretches and form from diapire, the lower edge that the opening lower edge of described diapire opening is the described mouth of pipe downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498604.4U CN203431205U (en) | 2013-08-15 | 2013-08-15 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498604.4U CN203431205U (en) | 2013-08-15 | 2013-08-15 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203431205U true CN203431205U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320498604.4U Expired - Lifetime CN203431205U (en) | 2013-08-15 | 2013-08-15 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203431205U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289144A (en) * | 2016-04-11 | 2017-10-24 | 浙江盾安人工环境股份有限公司 | A kind of electric expansion valve |
| CN108506545A (en) * | 2017-02-24 | 2018-09-07 | 浙江盾安机械有限公司 | Electric expansion valve |
| CN108506548A (en) * | 2017-02-24 | 2018-09-07 | 浙江盾安机械有限公司 | Electric expansion valve |
| CN108626413A (en) * | 2017-03-17 | 2018-10-09 | 盾安环境技术有限公司 | Electric expansion valve |
| CN108980505A (en) * | 2017-05-31 | 2018-12-11 | 浙江盾安机械有限公司 | The fixed structure and its processing method of adapter tube and valve seat |
-
2013
- 2013-08-15 CN CN201320498604.4U patent/CN203431205U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289144A (en) * | 2016-04-11 | 2017-10-24 | 浙江盾安人工环境股份有限公司 | A kind of electric expansion valve |
| CN108506545A (en) * | 2017-02-24 | 2018-09-07 | 浙江盾安机械有限公司 | Electric expansion valve |
| CN108506548A (en) * | 2017-02-24 | 2018-09-07 | 浙江盾安机械有限公司 | Electric expansion valve |
| CN108506548B (en) * | 2017-02-24 | 2022-03-08 | 浙江盾安机械有限公司 | Electronic expansion valve |
| CN108506545B (en) * | 2017-02-24 | 2022-03-08 | 浙江盾安机械有限公司 | Electronic expansion valve |
| CN108626413A (en) * | 2017-03-17 | 2018-10-09 | 盾安环境技术有限公司 | Electric expansion valve |
| CN108980505A (en) * | 2017-05-31 | 2018-12-11 | 浙江盾安机械有限公司 | The fixed structure and its processing method of adapter tube and valve seat |
| CN108980505B (en) * | 2017-05-31 | 2021-12-07 | 浙江盾安机械有限公司 | Fixing structure of connecting pipe and valve seat and processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |
|
| CX01 | Expiry of patent term |