CN102767636A - Electric valve - Google Patents
Electric valve Download PDFInfo
- Publication number
- CN102767636A CN102767636A CN2011101141022A CN201110114102A CN102767636A CN 102767636 A CN102767636 A CN 102767636A CN 2011101141022 A CN2011101141022 A CN 2011101141022A CN 201110114102 A CN201110114102 A CN 201110114102A CN 102767636 A CN102767636 A CN 102767636A
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- mandrel
- shell
- thickness
- operated valve
- mortor operated
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Abstract
The invention discloses an electric valve which comprises a casing, a valve seat (3) and a rotor device (5), wherein the casing comprises a casing body (21) and a mandrel (22) fixedly welded with the top (213) of the casing body (21). The casing body (21) is an integrated casing body formed by stamping and drawing, and the thickness delta 1 of the top (213) is larger than the thickness delta 2 of a periphery (211) of the casing body (21). Since the thickness of the top of the casing body is larger than that of the periphery, weakening of material strength of the top and the mandrel caused by welding heat influences can be offset, breaking strength of the top of the casing body of the electric valve can be guaranteed to be consistent with that of the periphery, and breaking resistance of the whole casing body is guaranteed. Besides, the thickness of the top of the casing body is increased, so that impact fatigue failure resistance of the joint of the casing body and the mandrel can be improved.
Description
Technical field
The present invention relates to the flow control valve field, particularly a kind of mortor operated valve.
Background technique
Need the occasion of regulated fluid flow at air-conditioning, refrigerator, heat pump, water heater and all kinds of refrigeration, heating device or other, understand the use traffic modulating valve usually, mortor operated valve is a kind of of flow control valve.
Please refer to Fig. 1, Fig. 1 is a kind of structural representation of typical mortor operated valve.
Mortor operated valve has case, valve seat 30 and rotor arrangement 20, is provided with needle parts 40 in the valve pocket of mortor operated valve.Rotor arrangement 20 is through coil drive magnet rotor and coupled screw mandrel, and screw mandrel drives needle parts 40 through worm structure and moves vertically, so that the size of needle control valve port opening, thereby control is through the flow of valve port fluid.
For following stop position and the last stop position that screw mandrel rotates reference point and limited flow control range inner valve needle accurately is set; The chocking construction of restrict rotor slewing area can be set usually; As shown in Figure 1; Case comprises shell 101 and the mandrel of fixing with top 1012 welding of shell 101 102, and mandrel 102 forms above-mentioned chocking construction with spring guide rail 103, slip ring 104 and stop rod 201.Spring guide rail 103 is fixed on the mandrel 102; Slip ring 104 is free to slide on spring guide rail 103, and during rotation, the stop rod 201 that is arranged on the rotor arrangement 20 contacts with the protuberance of slip ring 104; Driving slip ring 104 slides on spring guide rail 103; Can't rotate with two end in contact of spring guide rail 103 respectively, form upper and lower stop position, realize the control function of above-mentioned range of flow.
For improving the reliability of braking, stop component needs reliably to be connected with valve body, and welded top common and shell is fixed.As shown in Figure 1, the top 1012 basic one-tenth flat-top states of mortor operated valve shell 101, and the thickness of the thickness at top 1012 and peripheral wall 1011 is basic identical, and stretching in the middle of the top 1012 has a mounting hole, and also welding is fixing in the upper end insertion mounting hole of mandrel 102.
The mortor operated valve of this structure; The thickness at the top 1012 of its shell 101 and the thickness of peripheral wall 1011 are basic identical; After welded with mandrel 102 at top 1012, the material at top 1012 received welding heat affected, and intensity will have decline to a certain degree; During use, the breakdown strength at mortor operated valve top 1012 can obviously reduce; And the top of shell 101 1012 is basic to become the flat-top states, and its thickness is basic identical with the thickness of peripheral wall 1011 again, receive the impact force of rotor when mandrel 102 after, the top 1012 of shell is prone to produce fatigue failures.
Therefore, how improving the shell mechanism of mortor operated valve, make it possess higher intensity and anti-fatigue ability, is those skilled in the art's technical issues that need to address.
Summary of the invention
The purpose of this invention is to provide a kind of mortor operated valve, the shell of this mortor operated valve has higher intensity and anti-fatigue ability.
For reaching the object of the invention; The present invention provides a kind of mortor operated valve; Have case, valve seat and rotor arrangement; Said case comprises shell and the mandrel of fixing with the welded top of said shell, and said shell is the integral type shell that punching stretch forms, and the thickness at said top is greater than the thickness of the peripheral part of said shell.
Preferably, has the transition part that stretches and form between said peripheral part and the said top; The thickness of said transition part is on the direction at said top, by the cumulative thickness to said top of the thickness of said peripheral part.
Preferably, the radial dimension of said transition part convergent vertically.
Preferably, the thickness ratio ρ of the thickness at said top and said peripheral part satisfies 1.3≤ρ≤1.8.
Preferably, said top has the through hole that extends along thickness direction, and the top of said mandrel is fixedly welded in the said through hole.
Preferably, the top of said mandrel has the boss that forms the step surface that makes progress, and said boss inserts in the said through hole.
Preferably, said top has the locating slot of notch towards said shell inner cavity, and the top of said mandrel is fixedly welded in the said locating slot.
Preferably, the top of said mandrel has the boss that forms the step surface that makes progress, and said boss inserts in the said locating slot; And said locating slot punching press forms, and forms the top boss that is positioned at said top.
Preferably, said mandrel and said top are fixed through laser bonding; And the laser welded seam at said mandrel and said top place has angle theta with the axis of said mandrel.
Preferably, the scope of said angle is 0 °＜θ＜20 °.
The thickness at the top of mortor operated valve shell is greater than the thickness of peripheral part among the present invention; Can offset top and mandrel because of welding heat affected weakening to Material Strength; Thereby the resistance of failure of resistance of failure and peripheral part that can guarantee the mortor operated valve cover top portion is consistent, guarantees the survivability that shell is whole; In addition, with respect to existing technology, in fact, the thickness of cover top portion is increased, thereby can improve the ability of shell and mandrel connection part antifatigue impact failure.
In further technological scheme, have the transition part that stretches and form between the peripheral part of shell and the top, the thickness of transition part is on the direction at top, by the cumulative thickness to the top of the thickness of peripheral part.Transition part plays the top and the effect of peripheral part that transition connects shell, can keep the continuity that stretches, makes shell both satisfy the thickness requirement of top and peripheral part, can keep the integrity of shell again, and its intensity and sealability all are able to assurance.
In further technological scheme, the radial dimension of transition part is convergent vertically.Be that transition part has certain axial height; And draw in to axis gradually, the transition part of this structural housing has good linking effect, avoid the top stressed after; Boundary generation stress at top and peripheral part is concentrated, thereby further improves the impact strength of shell.
In further technological scheme, mandrel and top are fixed through laser bonding, and the laser welded seam located of mandrel and top and the axis of mandrel have certain angle theta.Laser energy can penetrate shell when enough big, and the energy that penetrates that part of laser beam of shell can come together on the mandrel because of the existence of angle theta, thereby can guarantee that mandrel and shell fuse fully and the burn through phenomenon do not occur.
Description of drawings
Fig. 1 is a kind of structural representation of typical mortor operated valve;
Fig. 2 is the structural representation of first kind of embodiment of mortor operated valve provided by the present invention;
Fig. 3 is the partition schematic representation of case among Fig. 2, and wherein housing parts partly cuts open;
Fig. 4 is the amplification profile after the welding of cover top portion and mandrel among Fig. 2;
Fig. 5 is the structural representation of second kind of embodiment of mortor operated valve provided by the present invention;
Fig. 6 is the partition schematic representation of case among Fig. 5, and wherein housing parts partly cuts open;
Fig. 7 is the amplification profile after the welding of cover top portion and mandrel among Fig. 5;
Fig. 8 is the amplification profile after the welding of cover top portion and mandrel in the third embodiment of mortor operated valve provided by the present invention.
Embodiment
The purpose of this invention is to provide a kind of mortor operated valve, the shell of this mortor operated valve has the ability of higher intensity and antifatigue inefficacy.
In order to make those skilled in the art understand technological scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 2, Fig. 2 is the structural representation of first kind of embodiment of mortor operated valve provided by the present invention; Fig. 3 is the partition schematic representation of case among Fig. 2, and wherein housing parts partly cuts open; Fig. 4 is the amplification profile after the welding of cover top portion and mandrel among Fig. 2.
The mortor operated valve that this mode of execution provided; Have case, valve seat 3 and rotor arrangement 5; Be provided with needle parts 4 in the valve pocket; Case comprises shell 21 and the mandrel of fixing with top 213 welding of shell 21 22, and the stop rod 51 on mandrel 22 and spring guide rail 23, slip ring 24 and the rotor arrangement 5 forms the chocking construction of restrict rotor rotation amplitudes.Shell 21 is for having the tubular structure at top 213, and the thickness δ 1 at the top 213 of this structure mortor operated valve shell 21 is greater than the thickness δ 2 of the peripheral part 211 of shell 21, and peripheral part 211 is the cylindrical sidewall of shell 21.Because the top 213 of shell 21 and mandrel 22 welding, the impact force that then acts on mandrel 22 will be passed to the top 213 of shell 21.
The integral type shell 21 that shell 21 shown in Fig. 2 forms for punching stretch; Shell 21 is a thin-wall part, and in the punching stretch process, the thickness δ 1 at the top 213 of needs assurance shell 21 is greater than the thickness δ 2 of peripheral part 211; Be the continuity that keeps stretching; Can form the transition part 212 between peripheral part 211 and the top 213, then the thickness of transition part 212 is on the direction at top 213, by the thickness δ of peripheral part 211 2 cumulative to the top 213 thickness δ 1; Promptly form the shell of mainly being made up of peripheral part 211, transition part 212 and top 213 21, transition part 212 plays transition and connects the top 213 of shell 21 and the effect of peripheral part 211.The shell 21 of this structure had both satisfied the thickness requirement of top 213 and peripheral part 211, can keep the integrity of shell 21 again, and its intensity and sealability all are able to guarantee.Certainly, also can directly stretch forms top 213 and peripheral part 211, can realize the object of the invention equally, but its practical implementation effect is obviously inferior to the drawing effect with transition part 212.
Further, in the process that stretches, can make transition part 212 have certain axial height; Said axially is the axial of shell 21 and mandrel 22, and keeps certain inclination angle with peripheral part 211, draws in and transits to top 213; Be the radial dimension convergent vertically of transition part 212, as shown in Figure 3, the cross section of transition part 212 is arcuation; The whole flat-top end of middle compared to prior art shell 21, the transition part 212 of this structural housing 21 has good linking effect, avoid top 213 stressed after; 213 is concentrated with the boundary generation stress of peripheral part 211 at the top, thereby further improve the impact strength of shell 21.In addition, the thickness δ 1 that can make top 213 and the thickness δ 2 ratio ρ of peripheral part 211 satisfy 1.3≤ρ≤1.8, and this ratio range can satisfy the requirement of strength of whole casing 21 preferably, is convenient to the practical operation that stretches again.
The shell 21 of mortor operated valve in this mode of execution; The thickness δ 1 at its top 213 is greater than the thickness δ 2 of peripheral part 211; Can offset top 213 and mandrel 22 because of welding heat affected weakening to Material Strength; Thereby the resistance of failure of resistance of failure and peripheral part 211 that can guarantee mortor operated valve shell 21 tops 213 is consistent, guarantees the survivability that shell 21 is whole; In addition, with respect to existing technology, in fact, the thickness at the top 213 of shell 21 is increased, thereby improves the ability of shell 21 and mandrel 22 connection part antifatigue impact failures.
In addition, the top 213 of shell 21 has the through hole 2131 that extends along thickness direction, and the top of mandrel 22 is fixedly welded in the through hole 2131; This kind Placement is comparatively easy, is convenient to implement welding, and the mode of welding has multiple; Can be laser bonding, resistance welding and friction welding etc.; The preferred laser bonding that adopts when guaranteeing welding quality, can reduce the heat affecting of welding.Further, can the top of mandrel 22 be processed and form the upwards boss 221 of step surface, the top of mandrel 22 described herein, i.e. an end of top 213 welding of mandrel 22 and shell 21.During welding, boss 221 is inserted in the through hole 2131, boss 221 can adopt interference fit with through hole 2131, owing to conflict in step surface and top 213, can avoid mandrel 22 to go out shell 21 under external force; In addition; The step surface that the sidewall of boss 221 and boss 221 form all can be used as the welding position; As shown in Figure 4; Increased the bonding area of mandrel 22, can connect the top 213 of mandrel 22 and shell 21 more securely, and guaranteed the sealability at shell 21 tops 213 with shell 21 tops 213.
Please refer to Fig. 5, Fig. 5 is the structural representation of second kind of embodiment of mortor operated valve provided by the present invention; Fig. 6 is the partition schematic representation of case among Fig. 5, and wherein housing parts partly cuts open; Fig. 7 is the amplification profile after the welding of cover top portion and mandrel among Fig. 5.
Similar to the above embodiments, also can the top of mandrel 22 be processed into and form the upwards boss 221 of step surface, boss 221 is inserted in the locating slot 2132, can enlarge bonding area equally, guarantee welding quality, also can improve the weld seam seal simultaneously.
Locating slot 2132 can form through punching press; And form top boss 2133, as shown in Figure 6, top boss 2133 is positioned at the top of locating slot 2132; Then top 213 is after forming locating slot 2132; The thickness of this position can also keep offering the thickness before the locating slot 2132, guarantees to reduce welding heat affected, keeps the resistance of failure at top 213.
Please refer to Fig. 8, Fig. 8 is the amplification profile after the welding of cover top portion and mandrel in the third embodiment of mortor operated valve provided by the present invention.
In this mode of execution, the top 213 and the mandrel 22 of shell 21 directly weld, and the structure at shell 21 other positions is identical with first, second embodiment.After the shell 21 of this structure formed, other processing were not carried out at its top 213, and than the foregoing description, the airtight performance of shell 21 is better, and processing technology is more simple.Certainly, need rely on special frock clamping to position when mandrel 22 is with shell 21 welding in this mode of execution, can accomplish welding process.
To above-mentioned each embodiment, when adopting the top 213 of welding manner fixed central spindle 22 and shell 21, all can make the laser welded seam at mandrel 22 and 213 places, top, have certain angle theta with the axis of mandrel 22.Because shell 21 is thin-wall part, for avoiding in the laser beam welding, laser penetration shell 21 makes shell 21 the burn through phenomenon occur; During welding, can make the central axis of laser beam and shell 21 and mandrel 22 form certain included angle θ, the melting pool shape that forms weld seam after laser bonding is accomplished is relatively near wedge; Like Fig. 4, Fig. 7 and shown in Figure 8, laser energy can penetrate shell 21 when enough big, and the energy that penetrates that part of laser beam of shell 21 can come together on the mandrel 22 because of the existence of angle theta; Thereby can guarantee that mandrel 22 and shell 21 fuse fully and the burn through phenomenon do not occur; Preferably make the scope of angle satisfy 0 °＜θ＜20 °, in this angular range, both can avoid the burn through phenomenon; Can guarantee that again most of laser energy converges at the position of mandrel 22 and top 213 needs welding, guarantees welding quality.
More than a kind of mortor operated valve provided by the present invention has been carried out detailed introduction.Used concrete example among this paper principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. mortor operated valve; Have case, valve seat (3) and rotor arrangement (5); Said case comprises shell (21) and the mandrel of fixing with top (213) welding of said shell (21) (22); It is characterized in that, the integral type shell that said shell (21) forms for punching stretch, and the thickness δ 1 of said top (213) is greater than the thickness δ 2 of the peripheral part (211) of said shell (21).
2. mortor operated valve according to claim 1 is characterized in that, has the transition part (212) that stretches and form between said peripheral part (211) and said top (213); The thickness of said transition part (212) is on the direction of said top (213), by the thickness δ 2 cumulative thickness δ 1 to said top (213) of said peripheral part (211).
3. mortor operated valve according to claim 2 is characterized in that, the radial dimension of said transition part (212) is convergent vertically.
4. according to each described mortor operated valve of claim 1 to 3, it is characterized in that the thickness δ 1 of said top (213) and the thickness δ 2 ratio ρ of said peripheral part (211) satisfy 1.3≤ρ≤1.8.
5. according to each described mortor operated valve of claim 1 to 3, it is characterized in that said top (213) have the through hole (2131) that extends along thickness direction, the top of said mandrel (22) is fixedly welded in the said through hole (2131).
6. mortor operated valve according to claim 5 is characterized in that, the top of said mandrel (22) has the boss (221) that forms the step surface that makes progress, and said boss (221) inserts in the said through hole (2131).
7. according to each described mortor operated valve of claim 1 to 3, it is characterized in that said top (213) have the locating slot (2132) of notch towards said shell (21) inner chamber, the top of said mandrel (22) is fixedly welded in the said locating slot (2132).
8. mortor operated valve according to claim 7 is characterized in that, the top of said mandrel (2132) has the boss (221) that forms the step surface that makes progress, and said boss (221) inserts in the said locating slot (2132); And said locating slot (2132) punching press forms, and forms the top boss (2133) that is positioned at said top (213).
9. according to each described mortor operated valve of claim 1 to 3, it is characterized in that said mandrel (22) is fixed through laser bonding with said top (213); And the laser welded seam that said mandrel (22) and said top (213) are located has angle theta with the axis of said mandrel (22).
10. mortor operated valve according to claim 9 is characterized in that, the scope of said angle is 0 °＜θ＜20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101141022A CN102767636A (en) | 2011-05-04 | 2011-05-04 | Electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101141022A CN102767636A (en) | 2011-05-04 | 2011-05-04 | Electric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102767636A true CN102767636A (en) | 2012-11-07 |
Family
ID=47095146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101141022A Pending CN102767636A (en) | 2011-05-04 | 2011-05-04 | Electric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102767636A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132149A (en) * | 2013-05-02 | 2014-11-05 | 浙江三花股份有限公司 | Electric valve |
| CN105333197A (en) * | 2014-08-08 | 2016-02-17 | 浙江三花股份有限公司 | Electrically operated valve, locking device thereof and mounting method of locking guide rail |
| CN106439150A (en) * | 2015-08-10 | 2017-02-22 | 浙江三花智能控制股份有限公司 | Valve shell assembly and valve |
| CN106678382B (en) * | 2016-12-13 | 2022-06-17 | 盾安环境技术有限公司 | Electronic expansion valve of vehicle air conditioning system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169821A (en) * | 1996-12-12 | 1998-06-26 | Pacific Ind Co Ltd | Stopper structure of motor-operated valve |
| JPH1122849A (en) * | 1997-07-03 | 1999-01-26 | Fuji Koki Corp | Motor operated valve |
| JP2000297873A (en) * | 1999-04-15 | 2000-10-24 | Fuji Koki Corp | Motor-operated valve |
| JP2003065454A (en) * | 2001-06-12 | 2003-03-05 | Saginomiya Seisakusho Inc | Stopper structure for electric control valve |
| JP2003254461A (en) * | 2002-03-05 | 2003-09-10 | Saginomiya Seisakusho Inc | Electric control valve |
| JP2004263841A (en) * | 2003-03-04 | 2004-09-24 | Saginomiya Seisakusho Inc | Electric control valve |
| JP2007211814A (en) * | 2006-02-07 | 2007-08-23 | Saginomiya Seisakusho Inc | Motor-operated valve and solenoid valve |
-
2011
- 2011-05-04 CN CN2011101141022A patent/CN102767636A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169821A (en) * | 1996-12-12 | 1998-06-26 | Pacific Ind Co Ltd | Stopper structure of motor-operated valve |
| JPH1122849A (en) * | 1997-07-03 | 1999-01-26 | Fuji Koki Corp | Motor operated valve |
| JP2000297873A (en) * | 1999-04-15 | 2000-10-24 | Fuji Koki Corp | Motor-operated valve |
| JP2003065454A (en) * | 2001-06-12 | 2003-03-05 | Saginomiya Seisakusho Inc | Stopper structure for electric control valve |
| JP2003254461A (en) * | 2002-03-05 | 2003-09-10 | Saginomiya Seisakusho Inc | Electric control valve |
| JP2004263841A (en) * | 2003-03-04 | 2004-09-24 | Saginomiya Seisakusho Inc | Electric control valve |
| JP2007211814A (en) * | 2006-02-07 | 2007-08-23 | Saginomiya Seisakusho Inc | Motor-operated valve and solenoid valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132149A (en) * | 2013-05-02 | 2014-11-05 | 浙江三花股份有限公司 | Electric valve |
| CN104132149B (en) * | 2013-05-02 | 2017-09-01 | 浙江三花智能控制股份有限公司 | A kind of motor-driven valve |
| CN105333197A (en) * | 2014-08-08 | 2016-02-17 | 浙江三花股份有限公司 | Electrically operated valve, locking device thereof and mounting method of locking guide rail |
| CN106439150A (en) * | 2015-08-10 | 2017-02-22 | 浙江三花智能控制股份有限公司 | Valve shell assembly and valve |
| CN106678382B (en) * | 2016-12-13 | 2022-06-17 | 盾安环境技术有限公司 | Electronic expansion valve of vehicle air conditioning system |
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Application publication date: 20121107 |