CN208281585U - A kind of electric expansion valve - Google Patents
A kind of electric expansion valve Download PDFInfo
- Publication number
- CN208281585U CN208281585U CN201820413801.4U CN201820413801U CN208281585U CN 208281585 U CN208281585 U CN 208281585U CN 201820413801 U CN201820413801 U CN 201820413801U CN 208281585 U CN208281585 U CN 208281585U
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- coil
- casing
- cover
- locating plate
- sleeve pipe
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Abstract
The utility model discloses a kind of electric expansion valves, including casing and coil, the hub of a spool is provided with through-hole, described sleeve pipe is set in through-hole, the coil top is fixed with the cover for covering through-hole, the top of described sleeve pipe and the inner sidewall of cover offset, and the bottom of the coil is fixed with for the elastic card towards described sleeve pipe top-direction support described sleeve pipe.The utility model has the advantages that: the through-hole of coil top is covered using cover, allows casing to be located under cover after the through-hole for being inserted in coil, so as to prevent rainwater or condensed water from entering between casing and coil, effectively prevents corroding.In addition, since the top of casing and the inner sidewall of cover offset, downward power is applied with to casing by cover, the just elastic force cooperation upward for elastic card, cooperate elastic card with cover to fix casing, casing installation procedure is simplified, while preferably playing the elastic force effect of elastic card, casing is also prevented from and occurs axial shake in coil.
Description
Technical field
The utility model relates to the electrically-controlled valve technical field of refrigeration system, in particular to a kind of electric expansion valve.
Background technique
Electric expansion valve in the refrigeration systems such as air-conditioning for adjusting refrigerant flow rate includes valve part and coil, is led to
The needle opening degree crossed in coil drive valve part adjusts the uninterrupted of refrigeration system refrigerant, to reach control temperature
The effect of degree.But air-conditioner outdoor unit is typically mounted on balcony, is easily poured by rain, when rain enter valve part and
When on its coil, it be easy to cause harmful corrosion.Be also easy to produce condensed water on another aspect air-conditioner outdoor unit pipeline, condensed water along
Pipeline is very likely flowed on valve part and its coil, equally also results in harmful corrosion.
Utility model content
The purpose of this utility model is to provide a kind of electric expansion valve, it can effectively solve the problem that existing electric expansion valve is easy
Water inlet causes harmful the problem of corroding.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions: a kind of electronic expansion
Valve, including casing and coil, the hub of a spool are provided with through-hole, and described sleeve pipe is set in through-hole, and the coil top is fixed
There is the cover for covering through-hole, the top of described sleeve pipe and the inner sidewall of cover offset, and the bottom of the coil, which is fixed with, to be used for
Towards the elastic card of described sleeve pipe top-direction support described sleeve pipe.
Preferably, the top of described sleeve pipe is plane, ellipsoid or spherical surface, the inside of the cover and the top phase of casing
Adaptation.
Preferably, gas vent is provided on the cover.
Preferably, the lower end card of described sleeve pipe has locating plate, and elastic card is against locating plate on the face of cover.
Preferably, the locating plate is flat, and the locating plate includes the first connecting portion of arc, first connecting portion institute
Corresponding central angle is greater than 180 degree, is connected at least one first positioning region on the excircle of first connecting portion, on the first positioning region
It is provided with card slot, the elastic card is equipped with fixture block compatible with card slot；
Alternatively, the locating plate be it is flat, the locating plate includes the first connecting portion of arc, and first connecting portion institute is right
The central angle answered is greater than 180 degree, is connected at least one first positioning region on the excircle of first connecting portion, opens on the first positioning region
There is fixture block, the elastic card is equipped with card slot compatible with card slot.
Preferably, the elastic card includes the second positioning region and second connecting portion, and second positioning region is towards casing
Center, the fixture block are fixed on the second positioning region, and the second connecting portion is fixed on coil.
Preferably, fixing groove is provided on the coil, the second connecting portion is fixed in fixing groove.
It is preferably, fixed in the second connecting portion that there are two the fixed ear extended in the opposite direction, the fixed ears
In fixing groove.
Preferably, the lower end of described sleeve pipe is fixed with casing seat, and the outer wall of described sleeve pipe seat is equipped with far from cannula center
The positioning step outwardly protruded, the locating plate are stuck in casing seat, and the end face of the locating plate is against on positioning step；Or institute
The lower end for stating casing is fixed with casing seat, and positioning groove is provided on described sleeve pipe seat, and the locating plate is stuck in positioning groove.
A kind of electric expansion valve, including valve body and coil, the valve body include casing and are fixedly mounted on valve sheet
Locating plate on body is further fixed on elastic card and the locating plate on the coil integrally formed with cover on the coil
Cooperation, the casing of the valve body pass through coil and stretch in the cover, and the elastic card and locating plate clasp make valve sheet
The casing of body is abutted with the cover guarantees coil and the positioning of valve body in the axial direction.
Compared with prior art, the utility model has the advantages that: the through-hole of coil top is covered using cover, allows casing
It is located under cover after the through-hole for being inserted in coil, so as to prevent rainwater or condensed water from entering between casing and coil,
It effectively prevents corroding.In addition, being applied with downwards by cover to casing since the top of casing and the inner sidewall of cover offset
Power, just the elastic force cooperation upward for elastic card, fixes elastic card and cover cooperation by casing, simplifies casing
Installation procedure, while the elastic force effect of elastic card is preferably played, it is also prevented from casing and occurs axial shake in coil.
The top of described sleeve pipe is plane, ellipsoid or spherical surface, is adapted at the top of the inside of the cover and casing；Set
The top of pipe is that plane, ellipsoid or spherical surface are on cover interior side contacts without corner angle, it is not easy to cause stress to concentrate,
And the inside of cover is then adapted with cannula tip shape, increases the inside of cover and the contact area of cannula tip as far as possible, is prevented
Only cannula tip and cover contact area are too small, lead to top or the cover deformation of casing.
Gas vent is provided on the cover.When in casing insertion coil throughbore, gas vent can by casing and cover it
Between air discharge, casing can be smoothly installed in place.
The lower end card of described sleeve pipe has locating plate, and elastic card is against locating plate on the face of cover, and locating plate is bullet
Property card force impetus is provided on casing, the structure without substantially changing casing, elastic card to casing provide
Upward elastic force is conducive to the structure for simplifying elastic card and locating plate, as long as the two contact offsets.
The locating plate be it is flat, the locating plate includes the first connecting portion of arc, corresponding to first connecting portion
Central angle is greater than 180 degree, is connected at least one first positioning region on the excircle of first connecting portion, is provided with card on the first positioning region
Slot, the elastic card are equipped with fixture block compatible with card slot；Since if locating plate undertakes the upward elastic force of elastic card,
Therefore locating plate is designed as flat, as long as the radial direction along casing is done and extended, greatly reduces the processing and manufacturing of locating plate
Difficulty, while locating plate uses the first connecting portion of great circle arc is when casing is fixed using direct card itself is slightly distorted
Enter, realizes quickly positioning, and the card slot opened up on positioning region then can be very good to cooperate with the fixture block on elastic card, by bullet
Property card and locating plate between connection promoted to clamping form, connect it is even closer is not easy to loosen, in addition, by fixture block with
The cooperation of card slot, which is realized, limits the circumferential direction of casing, avoids casing that circumferential shake occurs.
The elastic card includes the second positioning region and second connecting portion, and second positioning region is towards cannula center, institute
It states fixture block to be fixed on the second positioning region, the second connecting portion is fixed on coil, and the second positioning region can towards cannula center
To reduce the position of elastic card occupancy, preferably cooperate with the locating plate of casing, reduces the length that locating plate stretches out.
Fixing groove is provided on the coil, the second connecting portion is fixed in fixing groove, second connecting portion is fixed on
In fixing groove, increase contact of the second connecting portion with coil, while hold-in winding overall appearance is inconvenient, second connecting portion will not be convex
Out coil in case when installation scratch with other parts.
Connect in the second connecting portion there are two the fixed ear extended in the opposite direction, the fixed ear also is located at fixing groove
Interior, the increase of fixed ear increases contact surface in second connecting portion and coil welding or gluing, and can be formed similar
Hook allows elastic card to connect with coil stronger.
The lower end of described sleeve pipe is fixed with casing seat, and the outer wall of described sleeve pipe seat is equipped with to be outwardly protruded far from cannula center
Positioning step, the locating plate is stuck in casing seat, and the end face of the locating plate is against on positioning step；Or described sleeve pipe
Lower end is fixed with casing seat, and described sleeve pipe seat is equipped with positioning groove, and the locating plate is stuck in positioning groove；Increase casing
Positioning step or positioning groove is arranged in seat on casing seat, carries out tentatively fixed to the locating plate being fixed thereon and positions,
Subsequent welding is facilitated to operate.
Detailed description of the invention
Fig. 1 is a kind of cross-sectional view of electric expansion valve of the utility model；
Fig. 2 is the structural schematic diagram of locating plate in a kind of electric expansion valve of the utility model；
Fig. 3 is that locating plate is mounted on the perspective view on casing in a kind of electric expansion valve of the utility model；
Fig. 4 is that locating plate is mounted on the main view on casing in a kind of electric expansion valve of the utility model；
Fig. 5 is a kind of cross-sectional view of electric expansion valve middle sleeve seat of the utility model；
Fig. 6 is a kind of perspective view of electric expansion valve coil upward view angle of the utility model；
Fig. 7 is the perspective view of elastic card in a kind of electric expansion valve of the utility model；
Fig. 8 is that elastic card is installed to the perspective view on coil in a kind of electric expansion valve of the utility model；
Structural schematic diagram when Fig. 9 is a kind of electric expansion valve middle sleeve of the utility model and fitting coils.
Appended drawing reference: casing 1, coil 2, fixing groove 21, through-hole 3, cover 4, gas vent 41, elastic card 5, second position
Portion 51, second connecting portion 52, fixture block 53, fixed ear 54, locating plate 6, first connecting portion 61, the first positioning region 62, card slot 63, set
Tube socket 7, positioning step 71, valve seat 8, chamber 9.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.Below with reference to
The embodiment of attached drawing description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The instructions such as " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
Refering to fig. 1, Fig. 6 is a kind of embodiment of electric expansion valve of the utility model, a kind of electric expansion valve, including casing
1 and coil 2,2 center of coil be provided with through-hole 3, described sleeve pipe 1 is set in through-hole 3, be fixed at the top of the coil 2 by
The cover 4 of 3 top of through-hole masking, the bottom of the coil 2 are fixed with elastic card 5, top and the cover 4 of described sleeve pipe 1
Inner sidewall offsets, and the lower end of described sleeve pipe 1 connects with coil 2.
Directly casing 1 is inserted in 2 through-hole 3 of coil when installation, the top of casing 1 is against on the inner sidewall of cover 4, casing
1 bottom provides upward support force by the elastic card 5 on coil 2, to pass through the phase interaction of cover 4 and elastic card 5
With casing 1 is fixed, prevents the opposite sliding for occurring axial between casing 1 and coil 2, while cover 4 is by the logical of coil 2
3 top of hole is completely enclosed, effectively prevents rainwater or condensed water from entering between casing 1 and coil 2, may not flow into casing
1, on the binding face of 2 inner hole metal magnetic conducting frame of coil, avoids the generation of corrosion problem.
In order to allow cover 4 and coil 2 to be tightly connected, cover 4 and coil 2 can with integrated injection molding, with guarantee cover 4 with
There is good leakproofness between coil 2, while cover 4 can be kept to the active force of casing 1；It can be with cover 4 and coil 2
Top is connected together by supersonic welding, can equally guarantee good leakproofness and intensity, and can reduce cover 4 and line
Enclose 2 production difficulties.The inside of cover 4 is adapted with 1 top shape of casing, as far as possible between the inside and casing 1 of increase cover 4
Contact surface, more conducively stable casing 1 will not shake, and the top shape of casing 1 can be made plane, ellipsoid or spherical surface,
Corner angle are avoided as far as possible, are concentrated in order to avoid generating stress.
As shown in Fig. 1, Fig. 9, since cover 4 is blinded by the top of through-hole 3, when installing casing 1, casing 1 is inserted into
Through-hole 3 can form closed chamber 9 on the top of through-hole 3, and internal air can prevent casing 1 from being inserted into, therefore, can be in cover
The top surface of body 4 opens up gas vent 41, but to consider waterproof performance simultaneously, and gas vent 41 should not open up excessive, is typically chosen 1-
3mm diameter not only improves air in through-hole in this way and is discharged, also guarantees that water will not enter in cover 4, and after assembly in place,
The top of casing 1 can also withstand gas vent 41, and gas vent 41 is blocked, rainwater is further prevented to flow into.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, the lower end of casing 1 is also equipped with casing seat 7, valve seat and locating plate 6, locating plate 6
To be flat, the locating plate 6 includes the first connecting portion 61 of arc, and central angle corresponding to first connecting portion 61 is greater than 180
It spends, is connected at least one first positioning region 62 on the excircle of first connecting portion, first connecting portion and the first positioning region can be integrated
It manufactures, is provided with card slot 63 on the first positioning region 62.Casing seat 7 is circular ring shape, is equipped on the outer circle wall of casing seat 7 far from set
The positioning step 71 that 1 center of pipe outwardly protrudes, positioning step 71 can may be in the same plane for continuous circular ring shape
Intermittent arrangement.
When installation, casing seat 7 is first press fit together with 8 interference of valve seat of casing 1, then assembles adapter tube and weld-ring is latter
It plays process of passing through tunnel furnace to be welded, since level weld seam requirement has sealing effect to casing seat 7 after welding with valve seat 8, so welding
The gap design for meeting the former two is more crucial, it is necessary to assure the permeability of welding, gap here can design hand according to welding
Volume is designed.Then the assembling for carrying out valve member inner body, installs casing 1 after the completion, and casing 1 is first carried out with casing seat 7
It is attached continuous formula laser welding again after interference press fitting, weld seam must assure that sealing performance.Locating plate 6 is finally pressed into casing
It on the positioning step 71 of seat 7, then is welded, weld seam is one section arc-shaped, guarantees that locating plate 6 is not fallen off.
Other than positioning step 71 is set on casing seat 7, it is recessed that positioning can also be set on the outer circumference surface of casing seat 7
Slot is welded and fixed after locating plate 6 is caught in positioning groove.This completes the installations of 1 part of casing.
As shown in Fig. 6, Fig. 7, Fig. 8, and elastic card 5, including the second positioning region 51 and second connecting portion 52, the second positioning
Portion and second connecting portion can be integrally manufactured, form an angle between the second positioning region 51 and second connecting portion 52, to guarantee
Two positioning regions 51 are fixedly arranged at the front end with fixture block 53 towards 1 center position of casing, the second positioning region 51, and fixture block 53 is used for and locating plate
6 card slot 63 cooperates clamping.Fixing groove 21 is provided on coil 2, fixing groove 21 is opened up along the circumferential direction of coil 2, and the second connection
Portion 52 is fixed in fixing groove 21, in order to preferably fix second connecting portion 52, in second connecting portion 52 along 2 circumferential direction of coil
Both ends be respectively fixed with fixed ear 54, fixed ear and second connecting portion can also be integrally manufactured.
Coil 2 is formed using Shooting Technique, inside be molded with metal magnetic conducting frame, enameled wire and the bone for supporting enameled wire
Frame, enameled wire terminals are drawn by six contact pins.When coil 2 is molded, the metal magnetic conducting frame of portion requires dew on contact pin
A part is fixed out to carry out laser welding with coil 2, and then conducting wire component, wire guiding member one end are fixed with wiring board,
Lead, which is inserted into the welding hole of wiring board, carries out soldering, and the pin holes of wiring board, which are inserted into six contact pins of coil 2, carries out soldering
Connection, the pin holes of wiring board are connect with fairlead by printed wire, realize circuit conducting.Wire guiding member is installed to coil 2
Insulation crust is installed again after upper, insulation crust is connect with coil 2 by supersonic welding, finally in past insulation crust and coil 2
Between cavity in pour into epoxide-resin glue, epoxide-resin glue simultaneously seals the second connecting portion 52 of elastic card 5, in elasticity
Before card 5 is sealed by epoxy resin, in order to guarantee the positioning of elastic card 5, can also first with laser welding or it be spot welded into
Row positioning, or fixed only with welding manner and without epoxy resin, coil 2 completes after glue curing.
Finally casing 1 is pushed into coil 2, the fixture block 53 of elastic card 5 is withstood in the card slot 63 of locating plate 6 on casing 1,
The installation for completing casing 1 and coil 2 is fixed.The cover 4 being arranged on coil 2 realizes the limit up and down to casing 1, elastic card 5
It realizes that the circumferencial direction of casing 1 limits after assembling with locating plate 6, thereby realizes casing 1 and the position of coil 2 is fixed.It is fixed
Simple punch process production can be used in bit slice 6, reduces the production cost.Cover 4 has sealed 1 upper end of casing simultaneously, even if
Rain pours the top of cover 4, will not be flowed on the binding face of casing 1 and 2 inner hole metal magnetic conducting frame of coil, avoid
Corrosion problem occurs.
In above-described embodiment, the position of card slot 63 and fixture block 53 also be can be interchanged, i.e., card slot 63 is opened on elastic card 5,
And fixture block 53 is fixed on locating plate 6.
The foregoing is merely specific embodiment of the utility model, but the technical characteristics of the utility model is not limited to
This, in the field of the utility model, made changes or modifications all cover practical new at this any those skilled in the art
Among the scope of the patents of type.
Claims (10)
1. a kind of electric expansion valve, including casing and coil, the hub of a spool are provided with through-hole, described sleeve pipe is set in through-hole
It is interior, it is characterised in that: the coil top is fixed with the cover for covering through-hole, the top of described sleeve pipe and the inner sidewall of cover
It offsets, the bottom of the coil is fixed with for the elastic card towards described sleeve pipe top-direction support described sleeve pipe.
2. a kind of electric expansion valve as described in claim 1, it is characterised in that: the top of described sleeve pipe is plane, ellipsoid
Or spherical surface, it is adapted at the top of the inside of the cover and casing.
3. a kind of electric expansion valve as described in claim 1, it is characterised in that: be provided with gas vent on the cover.
4. a kind of electric expansion valve as claimed any one in claims 1 to 3, it is characterised in that: the lower end card of described sleeve pipe
There is locating plate, elastic card is against locating plate on the face of cover.
5. a kind of electric expansion valve as claimed in claim 4, it is characterised in that: the locating plate is flat, the positioning
Piece includes the first connecting portion of arc, and central angle corresponding to first connecting portion is greater than 180 degree, on the excircle of first connecting portion
It is connected at least one first positioning region, card slot is provided on the first positioning region, the elastic card is equipped with compatible with card slot
Fixture block；
Alternatively, the locating plate be it is flat, the locating plate includes the first connecting portion of arc, corresponding to first connecting portion
Central angle is greater than 180 degree, is connected at least one first positioning region on the excircle of first connecting portion, is provided with card on the first positioning region
Block, the elastic card are equipped with card slot compatible with card slot.
6. a kind of electric expansion valve as claimed in claim 5, it is characterised in that: the elastic card include the second positioning region and
Second connecting portion, second positioning region are fixed on the second positioning region towards cannula center, the fixture block, second connection
Portion is fixed on coil.
7. a kind of electric expansion valve as claimed in claim 6, it is characterised in that: it is provided with fixing groove on the coil, described the
Two interconnecting pieces are fixed in fixing groove.
8. a kind of electric expansion valve as claimed in claim 7, it is characterised in that: fixed in the second connecting portion there are two courts
The fixed ear that opposite direction extends, the fixed ear also are located in fixing groove.
9. a kind of electric expansion valve as claimed in claim 4, it is characterised in that: the lower end of described sleeve pipe is fixed with casing seat,
The outer wall of described sleeve pipe seat is equipped with the positioning step outwardly protruded far from cannula center, and the locating plate is stuck in casing seat, institute
The end face for stating locating plate is against on positioning step；Or the lower end of described sleeve pipe is fixed with casing seat, is provided on described sleeve pipe seat
Positioning groove, the locating plate are stuck in positioning groove.
10. a kind of electric expansion valve, including valve body and coil, the valve body includes casing and is fixedly mounted on valve body
On locating plate, it is characterised in that: integrally formed with cover on the coil, be further fixed on elastic card and institute on the coil
Locating plate cooperation is stated, the casing of the valve body passes through coil and stretches in the cover, the elastic card and locating plate button
Holding, which abuts the casing of valve body with the cover, guarantees coil and the positioning of valve body in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820413801.4U CN208281585U (en) | 2018-03-26 | 2018-03-26 | A kind of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820413801.4U CN208281585U (en) | 2018-03-26 | 2018-03-26 | A kind of electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208281585U true CN208281585U (en) | 2018-12-25 |
Family
ID=64749911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820413801.4U Active CN208281585U (en) | 2018-03-26 | 2018-03-26 | A kind of electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208281585U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021254419A1 (en) * | 2020-06-17 | 2021-12-23 | 浙江三花智能控制股份有限公司 | Solenoid valve |
| JP2022528828A (en) * | 2019-04-15 | 2022-06-16 | 浙江盾安人工環境股▲ふん▼有限公司 | Expansion valve coil assembly |
-
2018
- 2018-03-26 CN CN201820413801.4U patent/CN208281585U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022528828A (en) * | 2019-04-15 | 2022-06-16 | 浙江盾安人工環境股▲ふん▼有限公司 | Expansion valve coil assembly |
| JP7554765B2 (en) | 2019-04-15 | 2024-09-20 | 浙江盾安人工環境股▲ふん▼有限公司 | Expansion Valve Coil Assembly |
| WO2021254419A1 (en) * | 2020-06-17 | 2021-12-23 | 浙江三花智能控制股份有限公司 | Solenoid valve |
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