CN1039938C - A thermocoupler device - Google Patents
A thermocoupler device Download PDFInfo
- Publication number
- CN1039938C CN1039938C CN94120053A CN94120053A CN1039938C CN 1039938 C CN1039938 C CN 1039938C CN 94120053 A CN94120053 A CN 94120053A CN 94120053 A CN94120053 A CN 94120053A CN 1039938 C CN1039938 C CN 1039938C
- Authority
- CN
- China
- Prior art keywords
- external electrode
- electrode
- conduit
- thermocouple
- heat conduction
- 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.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000005476 soldering Methods 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 2
- 239000003518 caustics Substances 0.000 abstract 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229910001055 inconels 600 Inorganic materials 0.000 description 5
- 229910001006 Constantan Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910001026 inconel Inorganic materials 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical group [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/04—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples the object to be measured not forming one of the thermoelectric materials
- G01K7/06—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples the object to be measured not forming one of the thermoelectric materials the thermoelectric materials being arranged one within the other with the junction at one end exposed to the object, e.g. sheathed type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Control Of Combustion (AREA)
- Resistance Heating (AREA)
- Measuring Volume Flow (AREA)
Abstract
To enable a thermocouple to supply a large current to a magnet side by preventing the intrusion of a corrosive substance into the thermocouple and, at the same time, reducing the internal resistance of the thermocouple. In the thermocouple 1 composed of a lead pipe 4 constituting one lead wire of the thermocouple 1, external electrode 5 which is welded to the front end of the pipe 4 and formed into a shell-like state out of one thermocouple material, and internal electrode 6 welded to the internal wall of the electrode 5 at the front end of the electrode 5 and formed out of the other thermocouple material, the rear end of the electrode 5 is put on the front end of the pipe 4 and the fitted surfaces of the electrode 5 and pipe 4 are brazed to each other.
Description
The present invention relates to a kind of missing of ignition detector thermocouple assembly that is used for gas-fired equipment.
At gas-fired equipment, for example in combustion gas cooking stove or the analog, use thermopair as reaction sensitivity and long missing of ignition detector of life-span.This class thermopair has a taper external electrode usually, and its underpart engages with heat conduction by the top of soldering with a conduit.There is electrode in a inside of external electrode, and its top is welded to the top inner wall of external electrode.
In this case, a diameter enlarged of the lower end of external electrode and this pipe inner wall adapts, thereby shown in application publication No.3-69029, by soldering interface therebetween is engaged with heat conduction.
When making as temperature sensor with external electrode that flare contacts, use a kind of Inconel (trade mark), prices are rather stiff for it, have good heat-proof corrosion-resistant, and conduit is by a kind of cheap metal, and the brass etc. of for example conducting electricity is made.
For satisfying these needs, wish the length of external electrode is reduced to minimum to size, thereby reduce its internal resistance value, and shape is easy to machine work.The high temperature corrosion resistance of also wishing conduit is good, and is arranged to not have substantially corrosive deposit, because conduit always is exposed to flare when using.
The purpose of this invention is to provide a kind of missing of ignition detector thermocouple assembly that is used for gas-fired equipment, it can be avoided corrosive deposit to enter in it and with the external electrode size and reduce to minimum, thereby makes its shape be easy to processing.This has obviously been avoided the corrosion thing to adhere to pipe inner wall, and reduces the internal resistance value of external electrode, therefore produces enough strength of current, is provided on the electromagnet in the thermopair, and electrode places in the shelly external electrode in the linearity in this thermopair.
According to the invention provides a kind of missing of ignition detector thermocouple assembly that is used for gas-fired equipment, comprise the conduit of first lead-in wire that forms this thermocouple assembly; By first thermocouple material shelly external electrode that make and that cover the leading end of conduit regularly; By the interior electrode that second thermocouple material is made, the one end is welded in the top of the inwall of external electrode; The lower end of external electrode is installed around the leading end of conduit, make on the two interface between it by soldering to engage with heat conduction.
Further according to the present invention, the leading end of conduit is configured as has the stepped of reduced diameter portion position, and a groove or projection are arranged at the bottom of external electrode.
Also provide a kind of manufacturing to be used for the method for the missing of ignition detector thermocouple assembly of gas-fired equipment according to the present invention, comprised the steps: to prepare a conduit, its top is configured as has the stepped profile that a diameter reduces the position; The taper of being made by first thermocouple material external electrode is provided, and its top has a pipe portion of shrinking; The lower end of external electrode is installed around the reduced diameter portion position of conduit, make on the two interface between it by soldering to engage with heat conduction; And provide the interior electrode of making by second thermocouple material, its top to pass in the narrow pipe position that conduit is fixed to external electrode, and a top of interior electrode is joined with heat conduction to a top of this narrow part by welding.
Further according to the present invention, when by gas tungsten arc welding the top of interior electrode being engaged with heat conduction with the top at narrow pipe position, shrink from the top end at the collapsible tube position of external electrode slightly on the top of interior electrode.
Because the lower end of external electrode is fixed around the periphery of catheter tip by soldering, the top of external electrode is exposed in the surrounding atmosphere, i.e. the existence of flare, thus form effective Sensor section.So just can make the thermocouple assembly of external electrode minimum, make external electrode be easy to processing simultaneously.The minimum dimension of external electrode has reduced material, has saved cost, and has reduced the longitudinal size of external electrode, has reduced its internal resistance value, can obtain enough strength of current from this thermocouple assembly.
The external electrode lower end be provided with groove or projection make brazing solder can permeate smoothly in interface between electrode tip and the top, narrow pipe position.Thereby can carry out soldering and welding operation, improve production technology.
Because shrink from the top at the narrow pipe position of external electrode slightly on the top of interior electrode, can after having welded, make the top at narrow pipe position cover the temperature sensing part of contraction fully.Thereby the external electrode protection temperature sensing part of heat-and corrosion-resistant makes it not be exposed to the outside of external electrode, has prolonged the life-span.
The following describes in conjunction with claims and referenced drawings, these and other advantage of the present invention will be apparent.
Fig. 1 is the longitudinal sectional drawing according to the thermopair of embodiments of the invention;
Fig. 2 is the longitudinal sectional drawing of the detector of not striking sparks;
Fig. 3 a, 3b and 3c illustrate the skeleton view of a series of manufacturing steps;
Fig. 4 a and 4b are the skeleton view that another serial manufacturing step is shown.
With reference to figure 1, the figure shows the detector 100 of not striking sparks of a gas kitchen, it has a thermocouple assembly 1, be used for opertaing device connection outlet 2 and with thermocouple assembly 1 with export 2 leads that connect 3.Thermocouple assembly 1 has one to form its first conduit 4 that goes between, as shown in Figure 2.Around the top of conduit 4, there is a collapsible tube portion 54 lower end that taper external electrode 5 is housed, the top of this external electrode 5.External electrode 5 is made by inconel (Inconel) alloy 600 (trade marks) as first thermocouple material.In taper external electrode 5, the top of electrode 6 in linear is welded on the top of inwall of external electrode 5.Interior electrode is to be made by the constantan (Constantan) (trade mark) as second thermocouple material.
The top of conduit 4 or shape are to have the stairstepping that a diameter reduces position 41, and install around this ladder the lower end 51 of external electrode 5.The lower end 51 of external electrode 5 engages at the interface the soldering and the reduced diameter portion position 41 of conduit 4 with heat conduction by shown in the numeral 7.Shown in Fig. 3 a and 3b, there are one or more grooves 52 lower end of external electrode 5, so that when carrying out soldering, the scolder of fusion can infiltrate the interface between the reduced diameter portion position 41 of the lower end 51 of external electrode 5 and conduit 4 smoothly.Also can shown in Fig. 3 c, replace groove 52 with projection 53.
At the middle part of external electrode 5 are the tops that are welded on interior lines 33, thereby constitute the interior electrode 6 of a cold connection 11.
In missing of ignition detector 100, the external electrode 5 of thermocouple assembly 1 always be in use with gas range on the flare position contacting.In this case, can reduce the consumption of the starting material Inconel 600 of external electrode 5.Because the length dimension of external electrode reduces, raw material pulls into external electrode 5 easily, and this is an advantage when producing external electrode in batches.
With reference to figure 3a-3c, 4a and 4b, the step of making thermocouple assembly 1 is as follows:
Shown in Fig. 3 a, axially place a brass guide 4, its top has reduced diameter portion position 41.When making external electrode 5, this taper (bullet shaped) electrode 5 is to form by cutting inconel 600 pipes or the sheet material that stretches.Further stretching external electrode 5 makes its top have one to shrink position 54.Groove 52 or projection 53 are set in the lower end of electrode 5 simultaneously.Then the lower end of external electrode 5 is fixed around the reduced diameter portion position of conduit.Interface between the reduced diameter portion position 4 of the lower end 51 of external electrode 5 and conduit 4 adds silver solder, shown in Fig. 3 b.
Describe as Fig. 4 a, the lower end welding by interior electrode 6 that interior lines 33 and top diameter are reduced provides a weld assembly.This weld assembly is inserted in the external electrode 5, and the top 6a of electrode 6 shrinks slightly from the top at narrow pipe position 54 in making.In this case, the top 6a with interior electrode 6 engages with heat conduction with the top 54a at collapsible tube position 54 by gas tungsten arc welding, shown in Fig. 4 b.Then, with outside line 31 outside surface welding with conduit 4, and with line 31 and 33 lower end separately with export 2 and connect.
When the top 6a of electrode 6 engages with heat conduction with the top 54a at narrow pipe position 54 in making, can use laser, plasma or electron beam welding to replace gas tungsten arc welding.
Though with reference to certain embodiments the present invention is described, should not be construed as limitation of the invention, under the prerequisite that does not exceed the spirit and scope of the present invention, those of ordinary skill in the art can do a lot of improvement.
Claims (4)
1. a missing of ignition detector thermocouple assembly that is used for gas-fired equipment comprises first conduit that goes between that forms this thermocouple assembly; Make and cover on regularly the shelly external electrode of the leading end of conduit by first thermocouple material; Make by second thermocouple material, the one end is welded on the interior electrode on the top of external electrode inwall; Install around the guiding tube of conduit the lower end that makes external electrode, and make on the two interface between it by soldering and to engage with heat conduction.
2. a thermocouple assembly as claimed in claim 1 is characterized in that, the leading end of conduit is configured as the stepped of reduced diameter portion position, and there are a groove or projection in the lower end of external electrode.
3. a manufacturing is used for the method for the missing of ignition detector thermocouple assembly of gas-fired equipment, comprises the steps: to prepare a conduit, and its top is configured as a diameter and reduces the stepped of position; The taper of being made by first thermocouple material external electrode is provided, and there is a narrow pipe position on the one top; The lower end of external electrode being installed around the reduced diameter portion position of conduit engages them on the interface of the two with heat conduction by soldering; And the interior electrode of being made by second thermocouple material is provided, conduit is passed on its top, so that be installed in the narrow pipe position of external electrode, and by welding the top of interior electrode is engaged with heat conduction with the top at narrow pipe position.
4. the method for manufacturing thermocouple assembly as claimed in claim 3, in it is characterized in that the top of electrode when engaging with heat conduction with the top at narrow pipe position by gas tungsten arc welding slightly from the top contraction at the narrow pipe position of external electrode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5318487A JP2728359B2 (en) | 1993-12-17 | 1993-12-17 | thermocouple |
| JP318487/93 | 1993-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1114744A CN1114744A (en) | 1996-01-10 |
| CN1039938C true CN1039938C (en) | 1998-09-23 |
Family
ID=18099671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94120053A Expired - Fee Related CN1039938C (en) | 1993-12-17 | 1994-12-17 | A thermocoupler device |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP2728359B2 (en) |
| KR (1) | KR0155402B1 (en) |
| CN (1) | CN1039938C (en) |
| ES (1) | ES2103667B1 (en) |
| IT (1) | IT1271282B (en) |
| TW (1) | TW403271U (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156149B (en) * | 2010-02-11 | 2014-04-30 | 宝钢集团有限公司 | Method and device for measuring decrepitation, expansion and shrinkage performance of lump coal |
| ITMI20111610A1 (en) * | 2011-09-07 | 2013-03-08 | Actek S R L | THERMOCOUPLE FOR BURNERS OF OVENS OR COOKTOPS |
| EP3117193B1 (en) * | 2014-03-13 | 2020-10-07 | Castfutura S.p.A. | Thermocouple and method for making the same |
| CN107356349B (en) * | 2017-07-03 | 2019-04-26 | 重庆大学 | A kind of device of thermocouple in conjunction with viscosity gauge head |
| US10976204B2 (en) * | 2018-03-07 | 2021-04-13 | Rosemount Inc. | Heat flux sensor with improved heat transfer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0369029B2 (en) * | 1988-03-10 | 1991-10-30 | Rinnai Kk |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT988322B (en) * | 1971-05-10 | 1975-04-10 | Italiana Tecnomeccanica Soc | IMPROVEMENT IN THERMOCOUPLES FOR THERMOELECTRIC SAFETY DEVICES FOR GAS BURNERS |
| JPS5215707B2 (en) * | 1972-07-14 | 1977-05-02 | ||
| JPS509402A (en) * | 1973-05-22 | 1975-01-30 | ||
| JPS533013Y2 (en) * | 1975-01-22 | 1978-01-26 | ||
| JPS5371882A (en) * | 1976-12-09 | 1978-06-26 | Mikuni Kogyo Kk | Thermocouple for thermocouple type pilot safety instrument |
| JPS53112241A (en) * | 1977-03-13 | 1978-09-30 | Kinzoku Giken Kk | Solder welding method |
| ES8206877A1 (en) * | 1981-03-06 | 1982-08-16 | Valls Vicent Manuel | Improvements in thermoelectric devices heat sensors (Machine-translation by Google Translate, not legally binding) |
| JPS585227U (en) * | 1981-07-02 | 1983-01-13 | 三洋電機株式会社 | push button mechanism |
-
1993
- 1993-12-17 JP JP5318487A patent/JP2728359B2/en not_active Expired - Fee Related
-
1994
- 1994-11-26 KR KR1019940031386A patent/KR0155402B1/en not_active IP Right Cessation
- 1994-11-29 TW TW087211598U patent/TW403271U/en not_active IP Right Cessation
- 1994-12-15 IT ITMI942532A patent/IT1271282B/en active IP Right Grant
- 1994-12-16 ES ES09402574A patent/ES2103667B1/en not_active Expired - Lifetime
- 1994-12-17 CN CN94120053A patent/CN1039938C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0369029B2 (en) * | 1988-03-10 | 1991-10-30 | Rinnai Kk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07174641A (en) | 1995-07-14 |
| CN1114744A (en) | 1996-01-10 |
| ITMI942532A0 (en) | 1994-12-15 |
| JP2728359B2 (en) | 1998-03-18 |
| KR950021823A (en) | 1995-07-26 |
| KR0155402B1 (en) | 1998-12-01 |
| IT1271282B (en) | 1997-05-27 |
| ITMI942532A1 (en) | 1996-06-15 |
| TW403271U (en) | 2000-08-21 |
| ES2103667A1 (en) | 1997-09-16 |
| ES2103667B1 (en) | 1998-05-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19980923 Termination date: 20101217 |