US1561593A - Thermoelectric couple - Google Patents
Thermoelectric couple Download PDFInfo
- Publication number
- US1561593A US1561593A US661041A US66104123A US1561593A US 1561593 A US1561593 A US 1561593A US 661041 A US661041 A US 661041A US 66104123 A US66104123 A US 66104123A US 1561593 A US1561593 A US 1561593A
- Authority
- US
- United States
- Prior art keywords
- couple
- thermo
- nickel
- copper
- approximately
- 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 - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
- H10N10/85—Thermoelectric active materials
- H10N10/851—Thermoelectric active materials comprising inorganic compositions
- H10N10/854—Thermoelectric active materials comprising inorganic compositions comprising only metals
Definitions
- thermo-couple having an extension portion of low heat resisting materials combined with a p rimary portion of relatively 4hlgh heat resisting materials; to provide extensionleads for a thermo-couple whereby the cold junction of the couple is most accurately transferred to the measuring instrument, or to a point where the temperature vof the cold junction can be maintained constant; to provide a thermo-couple extension whereby a specific'electro-motive force is enerated i at a given temperature; to provl e a thermo-couple extenslon, one element of whlch is formed of an alloy of nickel, copper and manganese; .and to provide other lmprovements will hereinafter appear.
- thermo-couple embodying the present invention. Referring tothe draw1ng,one embodl- 1 ment of the 'present inventlon in thermocouple-extensions 1s' shown as a part of respective freeends joined at 13 an a'compound thermo-couple, having primary vmanganese has been stated as varying from one-quarter ofone per 'centto one per cent,
- the elementjl in the present construction is the positive element-of the cou le and' is formed of a nickel-aluminum al oy, and the element 11- is the negative element and is'formed of an alloy (f nickel and chromium, though it'will be unotwithstandingood 'that' the positive element of a couple isy the element from which the electric current ovvs to the other or negative element when the junctlon of the cou le is heated.
- the nickel-chromium w1rey is to be'connected .to the plus or positive side of the' measurmg instrument, while the nickel-aluminum w1re is to be connected ltothe negative side of the measuring instrument.
- These two alloys are widely used .as primary ,elements of a *thermo-couple THEBMOELEGTRIC COUPLE.
- thermo-couple as so constructedA is known. to the trade vas a chromel-a'lumel" thermo-couple, and has been selected as the preferred type of primary for use withthe extensions of the present invention,
- thermo-coupleA For the purpose of extending the cold junction of the thermo-coupleA to a distant point, such as a measuring instrument, 4or
- the positive element 10 is connected toan, extension element wire-,1.5, formed of an alloy of nickel, copper and manganese, such alloy being enerally known as constantan.v
- the proportlons ⁇ of the-alloy are nickel, ap'- nroximately 45 .per cent; copper, approxi- ⁇ mately 53 percent; and manganese, from l@ per cent to 1 percent.
- the negative element 11, formed'of nickel and chromium, is i connected to a wire 16 -of copper of the purity of. the ordinary commercial copper wire. IThe materials of these extensions15 and 16 have considerably lessheatresistance but have the advantage of low resista-nce and the primary thermo-couple.
- thermo-couple the other side of the thermo-couple being lo.
- junction zero F. will vea certain E. M. F.
- thermo-electric couple comprising in combination a primary couple and two extension elements thereto, one of said elements bein formed of an alloy containing approximately 54% of copper, approximately of nickel and from .25% to 1% of manganese.
- thermo-electric couple comprising in combination a primary couple and extension elements connected thereto, one of said elements'being formed of an alloy containing approximately 54% of copper, approximately 45% of nickel and approximately onehalf of one per cent of manganese.
- thermo-electric couple comprising a primary couple having one element formed of nickel and chromium alloy and the other element formed of a nickel and aluminum alloy, 'an extension formed of pure copper connected to the nickel-chromium element, and a 'second extension formed of an alloy vcontaining approximately .54% of copper,
Description
Nov. 1.7J w25. 1,561,593 R. F. BROWN y THERMOELECTRI C COUPLE Filed Sept. 5, 1923 mvENToR l A' Far/mrd PE2-own,
Patented Nov. 17, 19254.
UNITED v'sT-AT Escl-m1* 511W oF FICE. y
v:inclinan r. BROWN, or PHILADELPHIA, rENNsYLvANIm- AssIGNon 'ro THE BROWN INSTRUMENT COMPANY, or ,rHILADELrHIa' PENNSYLVANIA, A conroaA'rIoN r`or PENNSYLVANIA.y 1 A applicatiol mea septeniber s, .1923. serial No. 661,041.
To all whom t may cofiwewt: Be it known that I, RICHARD P..BRWN,
. a citizen of the United States, and a resident electric couple; to provide a thermo-couple having an extension portion of low heat resisting materials combined with a p rimary portion of relatively 4hlgh heat resisting materials; to provide extensionleads for a thermo-couple whereby the cold junction of the couple is most accurately transferred to the measuring instrument, or to a point where the temperature vof the cold junction can be maintained constant; to provide a thermo-couple extension whereby a specific'electro-motive force is enerated i at a given temperature; to provl e a thermo-couple extenslon, one element of whlch is formed of an alloy of nickel, copper and manganese; .and to provide other lmprovements will hereinafter appear.
The drawing is a graphic representation of a thermo-couple embodying the present invention. Referring tothe draw1ng,one embodl- 1 ment of the 'present inventlon in thermocouple-extensions 1s' shown as a part of respective freeends joined at 13 an a'compound thermo-couple, having primary vmanganese has been stated as varying from one-quarter ofone per 'centto one per cent,
elements respectively" 10 and 11, 'oined in the usual manner at 12, and havm tlelr 1 to extension leads 15 and 16. The elementjl in the present construction is the positive element-of the cou le and' is formed of a nickel-aluminum al oy, and the element 11- is the negative element and is'formed of an alloy (f nickel and chromium, though it'will be un erstood 'that' the positive element of a couple isy the element from which the electric current ovvs to the other or negative element when the junctlon of the cou le is heated. Thus, the nickel-chromium w1rey is to be'connected .to the plus or positive side of the' measurmg instrument, while the nickel-aluminum w1re is to be connected ltothe negative side of the measuring instrument. These two alloys are widely used .as primary ,elements of a *thermo-couple THEBMOELEGTRIC COUPLE.
' because they' have a comparatively high heat resistance, a high electro-motive` force, and
produce Yan electro-motive force temperaturecurve with an absenceof critical polnts; "A prlma'ry thermo-couple as so constructedA is known. to the trade vas a chromel-a'lumel" thermo-couple, and has been selected as the preferred type of primary for use withthe extensions of the present invention,
though it-will .be understood thev invention is n ot limited to `this particular primary.
For the purpose of extending the cold junction of the thermo-coupleA to a distant point, such as a measuring instrument, 4or
a location Where the ytemperature `of the. cold junction can be maintainedconstant, the positive element 10 is connected toan, extension element wire-,1.5, formed of an alloy of nickel, copper and manganese, such alloy being enerally known as constantan.v
'The proportlons `of the-alloy are nickel, ap'- nroximately 45 .per cent; copper, approxi- `mately 53 percent; and manganese, from l@ per cent to 1 percent. The negative element 11, formed'of nickel and chromium, is i connected to a wire 16 -of copper of the purity of. the ordinary commercial copper wire. IThe materials of these extensions15 and 16 have considerably lessheatresistance but have the advantage of low resista-nce and the primary thermo-couple.
f than do the'primary elements of the couple,
j-While in the foregoing the p ercentageof i very desirable andsatisfactory. results, have beenobtained when the manganese content,- is one-half of one per cent, and this or asl nickel has a very material eiect on the .E, M. F. generated by a thermo-couple formed of constantan wire combined with a co perwire. For'` examplez a thermocoup e formed of constantan wire approximately 54 per cent, nickel approximately 45V per cent and manganese 1A of 1 per cent,
the other side of the thermo-couple being lo.
copper, with hot junction at 1500 F., col
junction zero F., will vea certain E. M. F.;
and if the copper an nickel in the constantan wire are maintained. 1n the Same proportions, and the manganese is increased to l of one per cent, thezcopper Wire remaining the same,a changein E. M. F. equiva lent to 150 F. will occur. Since achange 1n the manganese content from 1/1 of 1 per `cent to q'of one per cent causes a change ofA approximately 10 percent at 1500"- F.,and this percentage is approximately the 'same at 150 F., (the temperature to which the cold end of a primary thermo-couple may frequently be subjected), it is very.- impor- Ltant that in the manu-facture lof thermocold junctionfrom the thermo-couple to a distance by means of extension leads of copperv combined with a copper-nickcl-manganesealloy. The small percentage of impuri ties, such as iron, 'silicon and carbon remaining in the constantan wire 1n its finished state are negligible and have no effect upon the functioning; of the extension wires.
Although only a single form is shown inY which this invention ma be embodied, it is to be understood that tI e Vinvention is not limited to any specific construction, but might be applied in various forms Without departing from they spirit of the invention or the scope of the appended claims.
'Having thus described my invention, l claim: 4 v
1. A thermo-electric couple comprising in combination a primary couple and two extension elements thereto, one of said elements bein formed of an alloy containing approximately 54% of copper, approximately of nickel and from .25% to 1% of manganese.
2. A thermo-electric couple comprising in combination a primary couple and extension elements connected thereto, one of said elements'being formed of an alloy containing approximately 54% of copper, approximately 45% of nickel and approximately onehalf of one per cent of manganese.
-A thermo-electric couple comprising a primary couple having one element formed of nickel and chromium alloy and the other element formed of a nickel and aluminum alloy, 'an extension formed of pure copper connected to the nickel-chromium element, and a 'second extension formed of an alloy vcontaining approximately .54% of copper,
approximately 45% of nickel and from .25% to 1% of manganese connected to said nickel aluminum element. y
Signedat Philadelphia, county of Philadelphia, State of Pennsylvania, this 26 day of July, 1923.
RICHARD P. BROWN.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US661041A US1561593A (en) | 1923-09-05 | 1923-09-05 | Thermoelectric couple |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US661041A US1561593A (en) | 1923-09-05 | 1923-09-05 | Thermoelectric couple |
Publications (1)
Publication Number | Publication Date |
---|---|
US1561593A true US1561593A (en) | 1925-11-17 |
Family
ID=24651966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US661041A Expired - Lifetime US1561593A (en) | 1923-09-05 | 1923-09-05 | Thermoelectric couple |
Country Status (1)
Country | Link |
---|---|
US (1) | US1561593A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2563931A (en) * | 1946-04-02 | 1951-08-14 | Honeywell Regulator Co | Rate responsive thermocouple |
US2978527A (en) * | 1957-12-18 | 1961-04-04 | Lewis Eng Co | Rapid-response thermoelectric generator |
US3337371A (en) * | 1964-06-03 | 1967-08-22 | Gni I Pi Splavov I Obrabotki T | Compensation wire for chromel-alumel thermocouples |
US20090107537A1 (en) * | 2007-10-24 | 2009-04-30 | Heraeus Electro-Nite International N.V. | Thermocouple Extension Wire |
US20180094591A1 (en) * | 2014-04-24 | 2018-04-05 | Eagle Actuator Components Gmbh & Co. Kg | Circuit for temperature compensation |
-
1923
- 1923-09-05 US US661041A patent/US1561593A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2563931A (en) * | 1946-04-02 | 1951-08-14 | Honeywell Regulator Co | Rate responsive thermocouple |
US2978527A (en) * | 1957-12-18 | 1961-04-04 | Lewis Eng Co | Rapid-response thermoelectric generator |
US3337371A (en) * | 1964-06-03 | 1967-08-22 | Gni I Pi Splavov I Obrabotki T | Compensation wire for chromel-alumel thermocouples |
US20090107537A1 (en) * | 2007-10-24 | 2009-04-30 | Heraeus Electro-Nite International N.V. | Thermocouple Extension Wire |
US8608377B2 (en) * | 2007-10-24 | 2013-12-17 | Heraeus Electro-Nite International N.V. | Thermocouple extension wire |
US20180094591A1 (en) * | 2014-04-24 | 2018-04-05 | Eagle Actuator Components Gmbh & Co. Kg | Circuit for temperature compensation |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1561593A (en) | Thermoelectric couple | |
US2394079A (en) | Strain measuring system | |
US2434547A (en) | Electrical gauge circuits | |
US1650951A (en) | Thermostatic material | |
US1920618A (en) | Voltage regulating apparatus | |
US2689936A (en) | Voltage regulator | |
US1103640A (en) | Thermo-electric pyrometer. | |
GB616851A (en) | Improvements relating to alternating current rectifiers of the selenium type | |
GB337907A (en) | Improvements relating to automatically varying series resistances for use with alternating current | |
US2400384A (en) | Thermoelectric generator and circuit | |
US2137043A (en) | Change amplifying means | |
US2258813A (en) | Exciting direct current generator | |
US1572117A (en) | Thermoelectric element | |
US971767A (en) | Thermo-electric couple. | |
US2536464A (en) | Thermocouple | |
US1916072A (en) | Automatic electrical regulating arrangement | |
US1648231A (en) | Thermocouple | |
US3260113A (en) | Heat transfer measuring apparatus | |
GB421019A (en) | Electric heating, soldering or welding tongs or pincers | |
GB213868A (en) | Improvements in or relating to thermo-electric couples | |
US624993A (en) | Hans otto swoboda | |
GB291834A (en) | Improvements in or relating to vacuum-meters embodying thermo-couples | |
US839984A (en) | Thermo-electric generator. | |
US1924364A (en) | Electric machine | |
US1586696A (en) | Electrical measuring instrument |