CN206236610U - A kind of temperature controller temperature sensing tube and capillary soldering interface structure - Google Patents
A kind of temperature controller temperature sensing tube and capillary soldering interface structure Download PDFInfo
- Publication number
- CN206236610U CN206236610U CN201621391427.XU CN201621391427U CN206236610U CN 206236610 U CN206236610 U CN 206236610U CN 201621391427 U CN201621391427 U CN 201621391427U CN 206236610 U CN206236610 U CN 206236610U
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- China
- Prior art keywords
- stainless steel
- temperature sensing
- protective case
- sensing tube
- thin
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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.)
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- 238000005476 soldering Methods 0.000 title claims abstract description 39
- 239000010935 stainless steel Substances 0.000 claims abstract description 94
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 94
- 230000001681 protective effect Effects 0.000 claims abstract description 62
- 229910000679 solder Inorganic materials 0.000 claims abstract description 28
- 238000003466 welding Methods 0.000 claims abstract description 10
- 238000003780 insertion Methods 0.000 claims abstract description 4
- 230000037431 insertion Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000005219 brazing Methods 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 238000006056 electrooxidation reaction Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Control Of Temperature (AREA)
Abstract
A kind of temperature controller temperature sensing tube and capillary soldering interface structure, including the stainless steel temperature sensing tube with one end closing in portion, small, flexible stainless steel capillary and thin-wall stainless steel non-close cylindrical shape protective case, the protective case upper top is provided with least three uniform inner valves, the protection is arranged with a seam for vertical insertion, protective case middle part is provided with an opening, the protective case bottom is enclosed within the closing in portion of stainless steel temperature sensing tube, small, flexible stainless steel capillary one end passes through the protective case top, the closing in portion of middle part and stainless steel temperature sensing tube enters stainless steel temperature-sensitive tube inner chamber, the 1st solder joint and the 2nd solder joint are obtained by electric resistance welding on the junction surface in the protective case Yu closing in portion.This soldering interface structure can greatly reduce the stress suffered by interface, so as to improve the service life of temperature controller, because interface is only concentrated at one, and path of welding is short, take very short, therefore can directly be welded in atmosphere.
Description
Technical field
The utility model is related to soldering interface structure technical field, the temperature sensing tube and capillary of more particularly to a kind of temperature controller
Soldering interface structure.
Background technology
The metal temperature sensing tube that one end of the temperature module is closed up in compression-type temperature controller needs flexible with a small, flexible
Metal capillary carry out soldering connection, and brazing requirements are air-tightness.Because capillary is small, flexible, in temperature controller
Capillary can repeatedly be bent with the interface of temperature sensing tube during producing and installing and using, and produce internal stress；Plus soldering
Solder is different from the material of temperature sensing tube, capillary, and interface is easily subject to electrochemical corrosion during long-term use；Internal stress
Combination with electrochemical corrosion can make interface corrosion cracking, cause the temperature module internal working medium leak and to temperature controller lose
Effect.
United States Patent (USP) US 4333669 discloses the technical scheme of entitled " Brazed or Soldered Joints ",
The technical scheme is provided with a protective case, from the soldering paste that protective case opening injection solder powder is mixed with scaling powder and carrier,
Being re-fed into tunnel heating carries out soldering, and the solder in soldering paste will melt and penetrate between protective case and temperature sensing tube, temperature-sensitive
Cylinder and intercapillary gap, so as to be formed with reference to interface and fixed protective case.The technical scheme has the following disadvantages：1）By
In needing to penetrate into gap between protective case and temperature sensing tube with solder, it is therefore desirable to consume more solder（Your gold solder contains
Category silver）, production cost can be greatly promoted.2）Due to needing solder to permeate many places and distant place, path is more, route is long, so needing
Weld interval very long, low production efficiency；Because weld interval is long, welded piece is susceptible to oxygen if exposure in atmosphere
Change, so need to be welded in expensive protective atmosphere continuous tunnel furnace or vacuum furnace, while also need to whole temperature sensing tube and
Whole capillary heating, consumes energy more.3）For prevent solder climbed because of capillarity to protective case and it is intercapillary between
Bonded at gap and both, protective case is larger with intercapillary gap, and in order to prevent the sharp edge of protective case upper port
Capillary may be hurt, in addition it is also necessary to which portion sets funnel-form port on the protective sleeve, therefore soldering postcapillary radially wobbles
Amplitude is very big, and what protective case cannot effectively limit capillary radially wobbles amplitude, it is difficult to avoid capillary from being connect with temperature sensing tube soldering
There is cracking phenomena in mouth, thus be unfavorable for the protection of soldering interface because producing larger stress.
The content of the invention
The purpose of this utility model is to provide a kind of temperature controller temperature sensing tube and capillary soldering interface structure, and the soldering connects
Mouth structure can be such that soldering interface only concentrates at one, and sealing wire is short out, and required weld interval is short, can directly enter in air ambient
Row heating welding, simultaneously as protective case top is provided with 3~8 inner valves, therefore the radially wobbling with respect to protective case of postwelding capillary
Amplitude very little, the stress to soldering interface can greatly reduce, and effectively reduce stress, corrosion that soldering interface may occur
And cracking causes refrigerant leakage and then temperature controller is failed.
The technical solution that the utility model is proposed is such：
A kind of temperature controller temperature sensing tube and capillary soldering interface structure, including a stainless steel sense with one end closing in portion
Warm cylinder, small, flexible stainless steel capillary and thin-wall stainless steel non-close cylindrical shape protective case, the thin-wall stainless steel non-close
Cylindrical shape protective case upper top is provided with least three uniform inner valves, and the protection of thin-wall stainless steel non-close cylindrical shape is arranged with one
The seam of vertical insertion, thin-wall stainless steel non-close cylindrical shape protective case middle part is provided with an opening, and the thin-wall stainless steel is non-
Closed circular tubular protective case bottom is enclosed within the closing in portion of stainless steel temperature sensing tube, and small, flexible stainless steel capillary one end is passed through
The closing in portion of thin-wall stainless steel non-close cylindrical shape protective case top, middle part and stainless steel temperature sensing tube enters in stainless steel temperature sensing tube
Chamber, leads on the junction surface in the thin-wall stainless steel non-close cylindrical shape protective case with the closing in portion of the stainless steel temperature sensing tube
Cross the 1st solder joint and the 2nd solder joint of electric resistance welding acquisition and wherein axisymmetrical.
Further, the thin-wall stainless steel non-close cylindrical shape protective case upper top is evenly equipped with 3~8 inner valves；It is described thin
The thickness of wall stainless steel non-close cylindrical shape protective case is 0.1~0.4mm.
Further, the external diameter of the internal diameter in the closing in portion of the stainless steel temperature sensing tube and the small, flexible stainless steel capillary
Difference be 0.1~0.3mm.Further, between the stainless steel temperature sensing tube closing in portion and the small, flexible stainless steel capillary
Gap fill brazing solder.
Further, the thin-wall stainless steel non-close cylindrical shape protective case and the closing in portion of the stainless steel temperature sensing tube are bullet
Property engagement connection.
It is of the present utility model innovation main points be：Because stainless steel temperature sensing tube connects with the soldering of small, flexible stainless steel capillary
Mouthful only at one, and sealing wire is short out, and the required time is very short, can locally apply scaling powder and brazing solder, using acetylene
The method such as flame or high-frequency induction heating directly carries out heating welding in air ambient.Due to temperature sensing tube-capillary after soldering
The laterally interior resistance of sub-assembly is less than interior resistance of the thin-wall stainless steel non-close cylindrical shape protective case along its semicircle circumferential direction, so
Butt-joint can be carried out using resistance welder, electric current will mainly pass through thin-wall stainless steel non-close cylindrical shape protective case, stainless during butt-joint
The minimal path conduction of steel temperature-sensitive barrel and temperature sensing tube-capillary combination section, in the thin-wall stainless steel non-close circle that resistance is larger
Tubular protective case forms nugget with the temperature-sensitive tube outer surface contact position of temperature sensing tube-capillary sub-assembly, therefore secures thin-walled not
Rust steel non-close cylindrical shape protective case, and the interior resistance of internal solder layer is relatively low, and solder layer will not be caused to be melted again.
It is postwelding simultaneously as being laid with 3~8 inner valves on thin-wall stainless steel non-close cylindrical shape protective case top
The radial direction amplitude of oscillation of capillary significantly reduces.
Compared with prior art, the beneficial effects of the utility model are：
Temperature controller temperature sensing tube of the present utility model is non-as a result of thin-wall stainless steel with capillary soldering interface structure
Closed circular tubular protective case, its top inner wall even distribution is provided with 3~8 inner valves, puts the radial direction of small, flexible stainless steel capillary
Dynamic amplitude greatly reduces, and so as to substantially reduce the stress produced in soldering interface, that is, greatly reduces soldering joint broken
Chance.The exposed parts of brazing solder have been wrapped up due to thin-wall stainless steel non-close cylindrical shape protective case, so that, shield pricker
The AgCuZn alloy solder of soldering opening may be subject to zinc anode electrochemical corrosion, be also considerably reduced soldering interface and ftracture
Situation occur, so as to greatly increase the service life of temperature controller.
This temperature controller temperature sensing tube can make at soldering interface concentration one with capillary soldering interface structure, and path of welding is short,
Weld interval is short, so its Welding process can directly be carried out in air ambient completely, without there is high-temperature oxydation,
With simple operation, energy saving, reliable in quality, low production cost, production efficiency remarkable result high.
Brief description of the drawings
Fig. 1 is a kind of temperature sensing tube of temperature controller of the utility model and capillary soldering interface structure schematic diagram；
Fig. 2 is the schematic front view of the cylindrical shape protective case of thin-wall stainless steel non-close shown in Fig. 1；
Fig. 3 is the schematic top plan view of Fig. 2；
Fig. 4 is to carry out resistance between the temperature sensing tube of temperature controller shown in Fig. 1 and thin-wall stainless steel non-close cylindrical shape protective case
The schematic diagram of butt-joint.
Specific embodiment
The utility model is further elaborated by example below.
Referring to shown in Fig. 1 to Fig. 4, a kind of temperature controller temperature sensing tube and capillary soldering interface structure, including one have one
Hold stainless steel temperature sensing tube 1, small, flexible stainless steel capillary 2 and the protection of thin-wall stainless steel non-close cylindrical shape of closing in portion 1-1
Set 3, the upper top of thin-wall stainless steel non-close cylindrical shape protective case 3 is provided with least three uniform inner valve 3-1, and thin-walled is stainless
Steel non-close cylindrical shape protective case 3 is provided with a seam 3-3 for vertical insertion, thin-wall stainless steel non-close cylindrical shape protective case 3
Middle part is provided with an opening 3-2, and the bottom of thin-wall stainless steel non-close cylindrical shape protective case 3 is enclosed within stainless steel temperature sensing tube 1
On closing in portion 1-1, the one end of small, flexible stainless steel capillary 2 through the top of thin-wall stainless steel non-close cylindrical shape protective case 3,
The closing in portion 1-1 of middle part and stainless steel temperature sensing tube 1 enters the inner chamber of stainless steel temperature sensing tube 1, in thin-wall stainless steel non-close circle
Obtained and its axis pair by electric resistance welding on tubular protective case 3 and the junction surface of the closing in portion 1-1 of the stainless steel temperature sensing tube 1
The 1st solder joint 5-1 and the 2nd solder joint 5-2 for claiming.
Used as further preferred embodiment, 3 upper tops of the thin-wall stainless steel non-close cylindrical shape protective case are uniform
There are 3~8 inner valve 3-1, the thickness of the thin-wall stainless steel non-close cylindrical shape protective case is 0.1~0.4mm.
Used as further preferred embodiment, the internal diameter of the closing in portion 1-1 of the stainless steel temperature sensing tube 1 is tiny with described
The difference of the external diameter of soft stainless steel capillary 2 is 0.1~0.3mm.
Used as further preferred embodiment, closing in portion 1-1 is stainless with the small, flexible for the stainless steel temperature sensing tube 1
Gap between steel wool tubule 2 fills brazing solder.
Used as further preferred embodiment, the thin-wall stainless steel non-close cylindrical shape protective case 3 is stainless with described
For resilient engagement is connected between the closing in portion 1-1 of steel temperature sensing tube 1.
Small, flexible stainless steel capillary 2 can be in air ambient with the junction surface of the closing in portion 1-1 of stainless steel temperature sensing tube 1
In carry out quick Welding.The closing in portion 1-1 of thin-wall stainless steel non-close cylindrical shape protective case 3 and stainless steel temperature sensing tube 1
Engagement be fixedly connected be by resistance welder complete, the conjugative component is placed across the bottom electrode 6 of resistance welder
And Top electrode 7 between, start resistance welder, weld to form the 1st solder joint 5-1 and the 2nd solder joint 5-2 by electric current, and by thin-walled not
Rust steel non-close cylindrical shape protective case 3 is fixed with stainless steel temperature sensing tube 1.
Thin-wall stainless steel non-close cylindrical shape protective case 3 of the present utility model can use stainless strip or plate stamping Volume
Leave seam 3-3 when Qu Ercheng, Volume song are into cylindrical shape, but due to two solder joints 5-1 and 5-2, though using it is relatively thin not
Rust steel is also not easy to be opened because being acted on by the bending force of small, flexible stainless steel capillary 2.The thin-wall stainless steel non-close circle
Tubular protective case 3 is additionally provided with the inner valve 3-1 of three or more than three, so as to further limit small, flexible stainless steel capillary
2 amplitude of fluctuation radially, reduces the stress suffered by soldering interface.The thin-wall stainless steel non-close cylindrical shape protection
Set 3 can also in the middle set an opening 3-2, because temperature controller temperature detection is detection in salt bath more than 300 DEG C,
Residual medium flows away from opening 3-2 after having detected, so medium will not remain in the protection of thin-wall stainless steel non-close cylindrical shape
In set 3.
Because soldering interface structure of the present utility model can make thin-wall stainless steel non-close cylindrical shape protective case 3 wrap up pricker
The exposed parts of the bed of material 4, shield the zinc anode electrochemical corrosion that the AgCuZn alloy solder of interface may be subject to, and thin-walled is not
Rust steel non-close cylindrical shape protective case 3 can also greatly reduce the amplitude that radially wobbles of small, flexible stainless steel capillary 2, greatly
The stress suffered by interface is reduced, therefore significantly reduces the possibility that interface causes cracking because producing stress and electrochemical corrosion
Property, effectively reduce temperature controller causes refrigerant leakage to enter using after a period of time because soldering interface occurs stress and electrochemical corrosion
And cause temperature controller to fail.
Claims (5)
1. a kind of temperature controller temperature sensing tube and capillary soldering interface structure, it is characterised in that：There is one end closing in portion including one
（1-1）Stainless steel temperature sensing tube（1）, small, flexible stainless steel capillary（2）With thin-wall stainless steel non-close cylindrical shape protective case
（3）, the thin-wall stainless steel non-close cylindrical shape protective case（3）Upper top is provided with least three uniform inner valves（3-1）, thin-walled
Stainless steel non-close cylindrical shape protective case（3）It is provided with a seam for vertical insertion（3-3）, thin-wall stainless steel non-close cylindrical shape
Protective case（3）Middle part is provided with an opening（3-2）, the thin-wall stainless steel non-close cylindrical shape protective case（3）Bottom is enclosed within not
Rust steel temperature sensing tube（1）Closing in portion（1-1）On, small, flexible stainless steel capillary（2）One end passes through the non-envelope of thin-wall stainless steel
Close cylindrical shape protective case（3）Top, middle part and stainless steel temperature sensing tube（1）Closing in portion（1-1）Into stainless steel temperature sensing tube（1）It is interior
Chamber, in the thin-wall stainless steel non-close cylindrical shape protective case（3）With the stainless steel temperature sensing tube（1）Closing in portion（1-1）'s
The 1st solder joint with wherein axisymmetrical is obtained by electric resistance welding on junction surface（5-1）With the 2nd solder joint（5-2）.
2. temperature controller temperature sensing tube according to claim 1 and capillary soldering interface structure, it is characterised in that：The thin-walled
Stainless steel non-close cylindrical shape protective case（3）Upper top is evenly equipped with 3~8 inner valves（3-1）；The thin-wall stainless steel non-close cylinder
Shape protective case（3）Thickness be 0.1~0.4mm.
3. temperature controller temperature sensing tube according to claim 1 and capillary soldering interface structure, it is characterised in that：It is described stainless
Steel temperature sensing tube（1）Closing in portion（1-1）Internal diameter and the small, flexible stainless steel capillary（2）External diameter difference for 0.1~
0.3mm。
4. temperature controller temperature sensing tube according to claim 3 and capillary soldering interface structure, it is characterised in that：It is described stainless
Steel temperature sensing tube（1）Closing in portion（1-1）With the small, flexible stainless steel capillary（2）Between gap fill brazing solder.
5. temperature controller temperature sensing tube according to claim 1 and capillary soldering interface structure, it is characterised in that：The thin-walled
Stainless steel non-close cylindrical shape protective case（3）With the stainless steel temperature sensing tube（1）Closing in portion（1-1）Between be resilient engagement connect
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621391427.XU CN206236610U (en) | 2016-12-19 | 2016-12-19 | A kind of temperature controller temperature sensing tube and capillary soldering interface structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621391427.XU CN206236610U (en) | 2016-12-19 | 2016-12-19 | A kind of temperature controller temperature sensing tube and capillary soldering interface structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206236610U true CN206236610U (en) | 2017-06-09 |
Family
ID=58992473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621391427.XU Withdrawn - After Issue CN206236610U (en) | 2016-12-19 | 2016-12-19 | A kind of temperature controller temperature sensing tube and capillary soldering interface structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206236610U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783386A (en) * | 2016-12-19 | 2017-05-31 | 佛山通宝华盛电热控制器有限公司 | A kind of temperature controller temperature sensing tube and capillary soldering interface structure |
| CN109623692A (en) * | 2018-12-06 | 2019-04-16 | 北京航空航天大学 | A kind of support connection device for thin-walled capillary pipe strength test |
-
2016
- 2016-12-19 CN CN201621391427.XU patent/CN206236610U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783386A (en) * | 2016-12-19 | 2017-05-31 | 佛山通宝华盛电热控制器有限公司 | A kind of temperature controller temperature sensing tube and capillary soldering interface structure |
| CN106783386B (en) * | 2016-12-19 | 2018-10-30 | 佛山通宝华盛电热控制器有限公司 | A kind of temperature controller temperature sensing tube is brazed interface structure with capillary |
| CN109623692A (en) * | 2018-12-06 | 2019-04-16 | 北京航空航天大学 | A kind of support connection device for thin-walled capillary pipe strength test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170609 Effective date of abandoning: 20181030 |
|
| AV01 | Patent right actively abandoned |