CN206861006U - A kind of electric expansion valve - Google Patents
A kind of electric expansion valve Download PDFInfo
- Publication number
- CN206861006U CN206861006U CN201720703950.XU CN201720703950U CN206861006U CN 206861006 U CN206861006 U CN 206861006U CN 201720703950 U CN201720703950 U CN 201720703950U CN 206861006 U CN206861006 U CN 206861006U
- Authority
- CN
- China
- Prior art keywords
- valve
- needle
- screw rod
- pad
- spring
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of electric expansion valve, including in valve body the rotor part of top and coil, the valve seat of lower section, top are fixedly connected and needle part that bottom and the valve seat coordinate, the nut that is used cooperatively with needle part with rotor part in valve body；The needle part includes screw rod and needle setting up and down, top top pressure screw rod and bottom compress the spring of needle, and screw rod coordinates with the nut, and the valve port of needle and valve seat coordinates；The bottom face that spring top passes through pad top pressure screw rod.By such scheme, spring top contacts with pad, spring bottom end and needle end contact, so, the friction of both ends of the spring, the friction being partly or entirely converted between pad and screw rod, to reduce the frictional resistance between spring end face and bush end face, needle end face in the prior art, and then reduce the abrasion of corresponding part.
Description
Technical field
It the utility model is related to refrigeration technology field, and in particular to the regulation of refrigerant flow.
Background technology
In the refrigeration systems such as air-conditioning, for the electric expansion valve of adjusting refrigerant flow rate, including valve part and coil,
The flow of refrigerant is controlled by the needle opening degree in coil drive valve part, so as to reach the effect of control temperature.
On the concrete structure of electric expansion valve, as shown in figure 1, including the He of rotor part 20 of the top in valve body 10
Coil, the valve seat 30 of lower section, top are fixedly connected and bottom and the needle of valve seat cooperation with rotor part in valve body
Part 40, the nut 50 being used cooperatively with needle part.
Such as Fig. 3, above-mentioned needle part 40 is by screw rod 41, gland 46, bushing 47, valve needle cover 45, spring 43, needle 42 6
Part forms, wherein, the top of screw rod is welded with the rotor part, and screw rod coordinates with the nut, the bottom of needle and valve
Seat coordinates.
When electric expansion valve works, coil drive rotor part rotates, and rotates, turns similar to the stator driving rotor of motor
Subassembly drives needle part to rotate together, and the fixed setting of the nut can make screw rod drive needle part straight line fortune up and down
It is dynamic.After needle 42 contacts with the valve port on valve seat 30, screw rod 41 continues to move downward with the bushing 47 for being secured to connection,
Spring 43 is compressed, and spring-force driven dual is on needle 42 and bushing 47.
Because frictional force zone of action spring 43 of moving reverses when above-mentioned screw rod 41 rotates, or, the end face of spring 43 and bushing 47
Relative friction motion occurs for end face, or, with the end face of needle 42 Relative friction motion occurs for the end face of spring 43.Above-mentioned Relative friction
The frictional resistance of motion is had a great influence by spring end face crudy and bushing or needle end face crudy, and uniformity is difficult to
Control.Wherein, needle 42 and bushing 47 are process by free-cutting metal, and hardness is relatively low, in this way, electric expansion valve is for a long time
After work, spring end face, bush end face, needle end wear are serious, frictional resistance increase, cause product service life to decline,
Product reliability reduces.
Authorization Notice No. is that CN 202149235U utility model discloses a kind of motor-driven valve, although its screw rod bushing is (quite
Oversleeve 47 in Fig. 3) the lower surface of upper surface and valve needle cover (equivalent to the gland 46 in Fig. 3) be linear contact lay, can reduce
Frictional resistance between the two, it can however not it is serious to solve spring end face, screw rod bushing end face, valve needle cover end wear, friction resistance
Power increases technical problem.
Utility model content
The technical problem that the utility model solves：How in electric expansion valve spring end face, bush end face, needle are reduced
The abrasion of end face.
In order to solve the above technical problems, the utility model provides following technical scheme：A kind of electric expansion valve, including positioned at
The rotor part and coil of the interior top of valve body, the valve seat of lower section, top are fixedly connected and bottom with rotor part in valve body
The needle part coordinated with the valve seat, the nut being used cooperatively with needle part；The needle part includes setting up and down
Screw rod and needle, top top pressure screw rod and bottom compress the spring of needle, and screw rod coordinates with the nut, the valve of needle and valve seat
Mouth coordinates；The bottom face that spring top passes through pad top pressure screw rod.
By above-mentioned technical proposal, spring top contacts with pad, spring bottom end and needle end contact, in this way, spring with
The friction between friction, spring and needle between pad, the friction being partly or entirely converted between pad and screw rod, to subtract
Frictional resistance between small spring end face in the prior art and bush end face, needle end face, and then reduce the abrasion of corresponding part.
The periphery of spring and pad is arranged with valve needle cover；Circular inner ledge is provided with the top of valve needle cover, the bottom of screw rod is provided with
The outward flange of annular, the outward flange stretch into valve needle cover and offseted with the inward flange；Valve needle cover bottom is fixedly connected with needle.
The cooperation of the outward flange and the inward flange, effective restriction has been carried out to the position relationship between screw rod, pad, needle,
And the flexible of lifting and spring of the valve needle cover to pad serves good guide effect, ensure that the valve port of needle and valve seat coordinates
When, uniform force.
The pad is revolving body, and the longitudinal cross-section of pad is in T shape, the ring edge and valve needle cover of pad large diameter portion
Madial wall is slidably matched, and the top of spring is set on the path part of pad；Upward boss, bullet are provided with the top of needle
The bottom of spring is set on the boss.Said structure design can ensure the linearity of telescopic spring, so extend spring and with
The service life of its mating parts, and can guarantee that the stability and validity of electric expansion valve work.In addition, the top of spring with
The path part of pad is fitted close, and the bottom of spring is fitted close with the boss, in this way, rubbing between spring and pad
Wipe, the friction between spring and needle, the friction being completely converted between pad and screw rod, and then avoid spring end face, needle
The abrasion of end face.Wherein, " longitudinal cross-section of pad " refers to：Plane by the rotation centerline of pad is section, the section
Section obtained by cutting pad is the longitudinal cross-section of pad.
The inward flange is integrally formed on valve needle cover, and needle is consolidated with valve needle cover in the way of laser welding after interference is pressed
Surely link together." inward flange is integrally formed on valve needle cover ", i.e. inward flange are structure as a whole with valve needle cover, for example, convex
Edge is integrally cast with valve needle cover.It is so designed that, the intensity of inward flange can be improved, improves the stability of electric expansion valve.
When electric expansion valve assembles, screw rod from bottom to top stretches into valve needle cover, reassembles pad and spring, finally connects needle and needle
Set.When valve connects pin and valve needle cover, first both interference are press fit together, then by both laser weldings, in this way, improving installation
The stability of accuracy and structure.
Circular inner ledge at the top of valve needle cover forms the top endoporus of valve needle cover, the bottom chamfer of valve needle cover top endoporus；
Outward flange top chamfer on screw rod；The chamfering of endoporus is more than the chamfering of outward flange on screw rod at the top of valve needle cover.Above-mentioned design makes
The inward flange and the outward flange linear contact lay, reduce both frictional resistance.Even if electric expansion valve by long-term use after, institute
State inward flange progressively to wear with the outward flange contact position, but above-mentioned design remains to make the inward flange obtain with the outward flange
Stable cooperation.
The pad top end face contacted with screw rod bottom face is central raised, and pad passes through described central raised and screw rod bottom face
Contact, reduce both contacts area, and then reduce frictional resistance between the two.
The material that the preferred frictional resistance of pad is small, wearability is good, for example, the pad is plastic material, preferably
PPS。
After the utility model solves electric expansion valve long-term work, the problem of two end wears of spring, electricity is added
The service life of sub- expansion valve, meanwhile, compared to prior art, part needed for electric expansion valve described in the utility model is more
It is few, be advantageous to the raising of electric expansion valve processing efficiency and the reduction of cost.
Brief description of the drawings
The utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of electric expansion valve in the prior art, and the A-A that Fig. 1 is Fig. 2 is to sectional view；
Fig. 2 is Fig. 1 top view；
Fig. 3 is the structural representation of needle part in Fig. 1, and Fig. 3 is Fig. 4 B-B direction sectional view；
Fig. 4 is Fig. 3 upward view；
Fig. 5 is the structural representation of electric expansion valve described in the utility model, and Fig. 5 is Fig. 6 C-C to sectional view；
Fig. 6 is Fig. 5 top view；
Fig. 7 is the structural representation of needle part in Fig. 5, and Fig. 7 is Fig. 8 D-D to sectional view；
Fig. 8 is Fig. 7 upward view；
Fig. 9 is enlarged drawing at E in Fig. 7；
Figure 10 is the structural representation of valve needle cover in Fig. 7；
Figure 11 is the structural representation of screw rod in Fig. 7.
Symbol description in figure：
10th, valve body；
20th, rotor part；
30th, valve seat；
40th, needle part；41st, screw rod；410th, outward flange；42nd, needle；420th, boss；43rd, spring；44th, pad；440、
Pad large diameter portion；441st, pad path part；442nd, the projection in the middle part of pad top end face；45th, valve needle cover；450th, inward flange；
46th, gland；47th, bushing；
50th, nut.
Embodiment
Such as Fig. 5, a kind of electric expansion valve, including in valve body 10 rotor part 20 of top and coil, positioned at valve body
The valve seat 30 of interior lower section, top are fixedly connected and bottom and the needle part 40 and needle of valve seat cooperation with rotor part
The nut 50 that part is used cooperatively.
Such as Fig. 7, the needle part includes screw rod 41 and needle 42 setting up and down, top top pressure bottom on pad 44
End is pressed on spring 43 on needle, and screw rod coordinates with the nut, and the valve port of needle and valve seat coordinates, the bottom face of screw rod with
The top end face of pad offsets.
The periphery of spring 43 and pad 44 is arranged with valve needle cover 45；Circular inner ledge 450 is provided with the top of valve needle cover, screw rod
Bottom is provided with the outward flange 410 of annular, and the outward flange stretches into valve needle cover and offseted with the inward flange；Valve needle cover bottom and valve
Pin 42 is fixedly connected.
On above-mentioned valve needle cover 45, the inward flange 450 is integrally formed on valve needle cover 45, and needle 42 was pressed with valve needle cover
The mode of laser welding after being pressed that is full of is fixed together.
On above-mentioned valve needle cover 45, the circular inner ledge 450 at the top of valve needle cover 45 forms the top endoporus of valve needle cover, needle
The bottom chamfer of set top endoporus；The top chamfer of outward flange 410 on screw rod；The chamfering of endoporus is more than on screw rod at the top of valve needle cover
The chamfering of outward flange, specifically, the cone angle that inner bore chamfering is formed at the top of valve needle cover are 100 degree, and the evagination on screw rod
The cone angle that edge top chamfer is formed is 80 degree, with reference to figure 9 to Figure 11.
Such as Fig. 7, the pad 44 is revolving body, and the longitudinal cross-section of pad is in T shape, the annular of pad large diameter portion 440
Edge is slidably matched with the madial wall of valve needle cover 45, and the top of spring 43 is set on the path part 441 of pad；The top of needle 42
Provided with upward boss 420, the bottom of spring is set on the boss.
On above-mentioned pad 44, the top end face of pad 44 central raised 442 contacted with the bottom face of screw rod 41, with reference to figure 9.
On above-mentioned pad 44, the material frictional resistance of the pad 44 is small, wearability is good, preferably PPS.
When electric expansion valve works, coil drive rotor part 20 rotates, and rotor part drives the spiral shell in needle part 40
Bar 41 rotates together, and the fixed setting of the nut 50 can make screw rod 41 drive whole needle part to move along a straight line up and down.Work as valve
After pin 42 contacts with the valve port on valve seat 30, screw rod 41 drives the pad 44 being in contact with it to continue to move downward, and spring 43 is pressed
Contracting, spring-force driven dual is on needle 42 and pad 44.Rotary motion, rotation fortune are doubled as while above-mentioned screw rod 41 moves downward
The Relative friction that turn is turned between the bottom face of screw rod 41 and the top end face of pad 44 rotates, to avoid the spring from twisting,
And avoid that Relative friction rotation occurs between the top of spring 43 and pad 44, spring bottom end and needle 42.
Above content is only better embodiment of the present utility model, for one of ordinary skill in the art, according to this
The thought of utility model, there will be changes, this specification content should not be understood in specific embodiments and applications
For to limitation of the present utility model.
Claims (7)
1. a kind of electric expansion valve, including in valve body (10) rotor part (20) of top and coil, in valve body under
The valve seat (30) of side, top are fixedly connected and bottom and the needle part (40) and needle of valve seat cooperation with rotor part
The nut (50) that part is used cooperatively；
The needle part include screw rod (41) and needle (42) setting up and down, top top pressure screw rod and bottom compresses needle
Spring (43), screw rod coordinate with the nut, and the valve port of needle and valve seat coordinates；
It is characterized in that：The bottom face that spring top passes through pad (44) top pressure screw rod.
A kind of 2. electric expansion valve as claimed in claim 1, it is characterised in that：The periphery of spring (43) and pad (44) is arranged
There is valve needle cover (45)；
Circular inner ledge (450) is provided with the top of valve needle cover, the bottom of screw rod is provided with the outward flange (410) of annular, the outward flange
Stretch into valve needle cover and offseted with the inward flange；
Valve needle cover bottom is fixedly connected with needle (42).
A kind of 3. electric expansion valve as claimed in claim 2, it is characterised in that：The pad (44) is revolving body, pad
Longitudinal cross-section is in T shape, and ring edge and valve needle cover (45) madial wall of pad large diameter portion (440) are slidably matched, spring
(43) top is set on the path part (441) of pad；
Upward boss (420) is provided with the top of needle (42), the bottom of spring is set on the boss.
A kind of 4. electric expansion valve as claimed in claim 2, it is characterised in that：The inward flange (450) is integrally formed in valve
On needle guard (45), needle (42) is fixed together with valve needle cover in the way of laser welding after interference is pressed.
A kind of 5. electric expansion valve as claimed in claim 2, it is characterised in that：Circular inner ledge at the top of valve needle cover (45)
(450) the top endoporus of valve needle cover, the bottom chamfer of valve needle cover top endoporus are formed；
Outward flange (410) top chamfer on screw rod；
The chamfering of endoporus is more than the chamfering of outward flange on screw rod at the top of valve needle cover.
A kind of 6. electric expansion valve as claimed in claim 1, it is characterised in that：The pad contacted with screw rod (41) bottom face
(44) top end face is central raised (442).
A kind of 7. electric expansion valve as claimed in claim 1, it is characterised in that：The pad (44) is plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720703950.XU CN206861006U (en) | 2017-06-16 | 2017-06-16 | A kind of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720703950.XU CN206861006U (en) | 2017-06-16 | 2017-06-16 | A kind of electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206861006U true CN206861006U (en) | 2018-01-09 |
Family
ID=60826600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720703950.XU Active CN206861006U (en) | 2017-06-16 | 2017-06-16 | A kind of electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206861006U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019179519A1 (en) * | 2018-03-23 | 2019-09-26 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN111486238A (en) * | 2019-01-25 | 2020-08-04 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN113685558A (en) * | 2021-09-29 | 2021-11-23 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
| CN113728185A (en) * | 2019-06-28 | 2021-11-30 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| EP3904734A4 (en) * | 2018-12-25 | 2022-12-14 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic expansion valve and air conditioning system using same |
| US11959561B2 (en) | 2019-03-13 | 2024-04-16 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic expansion valve and refrigeration system |
-
2017
- 2017-06-16 CN CN201720703950.XU patent/CN206861006U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019179519A1 (en) * | 2018-03-23 | 2019-09-26 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| EP3904734A4 (en) * | 2018-12-25 | 2022-12-14 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic expansion valve and air conditioning system using same |
| US11796234B2 (en) | 2018-12-25 | 2023-10-24 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic expansion valve and air conditioning system with electronic expansion valve |
| CN111486238A (en) * | 2019-01-25 | 2020-08-04 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN111486238B (en) * | 2019-01-25 | 2022-11-08 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| US11959561B2 (en) | 2019-03-13 | 2024-04-16 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic expansion valve and refrigeration system |
| CN113728185A (en) * | 2019-06-28 | 2021-11-30 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN113728185B (en) * | 2019-06-28 | 2022-09-20 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN113685558A (en) * | 2021-09-29 | 2021-11-23 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206861006U (en) | A kind of electric expansion valve | |
| CN102287536B (en) | Electronic expansion valve | |
| CN208519284U (en) | A kind of motor-driven valve | |
| CN101806328B (en) | Integral caliper air-pressure disc brake with standard seat guiding mechanism | |
| CN101524830B (en) | Copying abrasion wheel dressing device | |
| CN105506876B (en) | High speed chenille embroidery machine head | |
| CN206972649U (en) | A kind of rotating cylinder | |
| CN102292541A (en) | Axial piston machine having bent axis construction | |
| CN201844052U (en) | Rotating sphere adjusting valve | |
| CN110871377A (en) | Small-caliber top-mounted ball valve body grinding tool | |
| CN209781687U (en) | Double-cylinder sealing guide structure for reducing abrasion of sealing ring for valve | |
| CN101865300A (en) | Rotary ball-shaped regulation valve | |
| CN110332332A (en) | The soft or hard double containment offset-type semisphere valve of three eccentricity | |
| CN214999482U (en) | Valve needle assembly, electronic expansion valve and refrigeration equipment | |
| CN109882605A (en) | A kind of high pressure cock-type shut-off valve | |
| CN107143664B (en) | Plug valve | |
| CN201474648U (en) | Rotating anti-partial grinding packing set box | |
| CN210240570U (en) | Throttle stop valve | |
| CN116557536A (en) | Electronic expansion valve | |
| CN108825810B (en) | Adjustable three-eccentric one-way valve seat track ball valve and working method thereof | |
| CN206319132U (en) | A kind of hold-down gear of sewing-machine foot | |
| CN103256269A (en) | Manual pilot valve and spool thereof | |
| CN106812968B (en) | Plug valve | |
| CN201747294U (en) | Beam hanger of oil pumping machine | |
| CN202360769U (en) | Stop valve with corrugated tube torsion preventive structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |