EP1792151A1 - Silikonöl als arbeitsfluid für einen thermostat sowie ein solcher thermostat - Google Patents
Silikonöl als arbeitsfluid für einen thermostat sowie ein solcher thermostatInfo
- Publication number
- EP1792151A1 EP1792151A1 EP05774313A EP05774313A EP1792151A1 EP 1792151 A1 EP1792151 A1 EP 1792151A1 EP 05774313 A EP05774313 A EP 05774313A EP 05774313 A EP05774313 A EP 05774313A EP 1792151 A1 EP1792151 A1 EP 1792151A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silicone oil
- thermostat
- working fluid
- stabilizer
- silicon oil
- 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.)
- Withdrawn
Links
- 239000012530 fluid Substances 0.000 title claims description 24
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title abstract 5
- 239000003921 oil Substances 0.000 title abstract 5
- 229910052710 silicon Inorganic materials 0.000 title abstract 5
- 239000010703 silicon Substances 0.000 title abstract 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003381 stabilizer Substances 0.000 claims abstract description 18
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 11
- 230000001698 pyrogenic effect Effects 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 229920002545 silicone oil Polymers 0.000 claims description 31
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000032683 aging Effects 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 108090000623 proteins and genes Proteins 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 abstract description 2
- 230000004075 alteration Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- -1 polydimethylphenylsiloxane Polymers 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- WMVRXDZNYVJBAH-UHFFFAOYSA-N dioxoiron Chemical compound O=[Fe]=O WMVRXDZNYVJBAH-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/02—Unspecified siloxanes; Silicones
- C10M2229/025—Unspecified siloxanes; Silicones used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/08—Groups 4 or 14
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/14—Group 7
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/16—Groups 8, 9, or 10
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/36—Thermally-sensitive members actuated due to expansion or contraction of a fluid with or without vaporisation
Definitions
- Silicone oil as a working fluid for a thermostat and such a Thermostat
- the invention relates to a silicone oil for a thermostat, a method for pre-aging a working fluid for a thermostat and the Ver ⁇ use of such a working fluid in a thermostat.
- thermostats are known, as used, for example ver ⁇ for the control of heating power.
- a closed system is filled with a supply of working fluid, for example silicone oil, and leads via a fluid-conducting connection to a switch release or derglei ⁇ Chen.
- working fluid for example silicone oil
- a switch release or derglei ⁇ Chen By changing the temperature, there is a change in the volume expansion of the working fluid or of the silicone oil, which can be converted into a displacement change that triggers a switch.
- the service life and the accuracy of the thermostat over a longer period of time depends on the quality of the working fluid.
- the object of the invention is to provide or produce an operating fluid mentioned above and a thermostat filled with it in order to avoid disadvantages of the prior art and, in particular, age stability and temperature resistance of the working fluid and thus of the entire thermostat to improve.
- a stabilizer is added to the silicone oil for use in a thermostat. This serves to reduce age-related or temperature-induced changes in the silicone oil and, above all, to improve thermal stability. After these points of view, a stabilizer is selected. By such an addition or such a stabilizer, the negative consequences, as described above, can be avoided.
- the silicic acid added with the stabilizer has long-term stable, consistent properties. INS In particular, its thermal expansion or its thermal expansion behavior do not change.
- a possible silicone oil is, for example, polydimethylphenylsiloxane.
- a stabilizer can be selected to bind potential reactants or reaction products in the silicone oil so that they do not degrade the properties of the silicone oil. He can also bind free radicals. These, too, could otherwise react with the silicone oil itself or change it and in particular worsen its properties. Above all, a stabilizer can bind, for example, dissolved oxygen particles in the silicone oil.
- the proportion of the stabilizer on the silicone oil depends, of course, on the type of stabilizer, and possibly also on the use of the silicone oil or the thermostat. Furthermore, the properties of the silicone oil should remain dominant throughout the blend. Thus, for example, the proportion of the stabilizer can amount to a maximum of 5%, advantageously even lower, for example up to 3%.
- an oxidizing agent can be advantageously used.
- This can be a metal oxide.
- the metal oxide is preferably titanium dioxide, in particular pyrogenic titanium dioxide can be used. This can be prepared by flame hydrolysis of titanium tetrachloride.
- a metal oxide or the abovementioned titanium dioxide itself may in turn be doped to improve its properties.
- One possibility is a doping with iron oxide, for example up to a percentage of 5%.
- FeCl 3 can be added to the abovementioned material so that, for example, a titanium dioxide doped with 2% Fe 2 O 3 is obtained.
- the primary particles are not in isolated form before, but as aggregates or agglomerates. There are exceptionally small primary particles, which require a relatively large specific surface area of about 50m 2 / g.
- titanium dioxide causes heat stabilization of the silicone oil due to the oxidizing properties of the metal ions. Electrons can be taken up and free radicals are thereby rendered harmless, which arise during the thermal loading of the silicone oil. Uncontrolled reactions or polymerizations as well as oxidation reactions are severely restricted.
- the working fluid for use in a thermostat that provides a good and consistent long-term function, it can be pre-aged by heating.
- This has the advantage that on the one hand, especially at the beginning of aging, the changes in relation to the elapsed time show relatively strong effects. Inso ⁇ it is in such a Voralterungsvon advantageous to perform this before use in the thermostat.
- a heating can be carried out at a temperature which is significantly, advantageously even very clearly, above the foreseeable starting temperature.
- a pre-aging temperature can even reach twice the maximum operating temperature, advantageously between 20% and 50% above it.
- silicone oil which is particularly suitable for pre-aging
- other working fluids used hitherto can also be pre-aged.
- stabilizers is also advantageous here, for example also the aforementioned stabilizers.
- One embodiment comprises a silicone oil, namely polydimethylphenylsiloxane, to which 2% pyrogenic titanium dioxide is added.
- the pyrogenic titanium dioxide is doped with 2% iron dioxide.
- Ar- beitsfluid is pre-aged in a tank for several hours, for example 6 to 10 hours, at a temperature of 370 0 C.
- the thus treated working fluid is filled in a thermostat and this adjusted before installation.
- the thermostat can be installed in an oven, for example, in order to effect a type of temperature measurement and regulation there.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004042829A DE102004042829A1 (de) | 2004-08-27 | 2004-08-27 | Silikonöl als Arbeitsfluid für einen Thermostat sowie ein solcher Thermostat |
| PCT/EP2005/009169 WO2006024451A1 (de) | 2004-08-27 | 2005-08-25 | Silikonöl als arbeitsfluid für einen thermostat sowie ein solcher thermostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1792151A1 true EP1792151A1 (de) | 2007-06-06 |
Family
ID=35115702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05774313A Withdrawn EP1792151A1 (de) | 2004-08-27 | 2005-08-25 | Silikonöl als arbeitsfluid für einen thermostat sowie ein solcher thermostat |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1792151A1 (de) |
| CN (1) | CN101023333B (de) |
| DE (1) | DE102004042829A1 (de) |
| WO (1) | WO2006024451A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2328709C1 (ru) * | 2007-01-09 | 2008-07-10 | Государственное Образовательное Учреждение Высшего Профессионального Образования "Дагестанский Государственный Технический Университет" (Дгту) | Малогабаритный нуль-термостат на эффекте пограничного слоя плавления |
| RU2328708C1 (ru) * | 2007-01-09 | 2008-07-10 | Государственное Образовательное Учреждение Высшего Профессионального Образования "Дагестанский Государственный Технический Университет" (Дгту) | Малогабаритный нуль-термостат с регулируемым тепловым потоком |
| DE102017223290A1 (de) | 2017-12-19 | 2019-06-19 | E.G.O. Elektro-Gerätebau GmbH | Verfahren zum Verändern eines Arbeitsfluids in einem Ausdehnungssystem und Ausdehnungssystem |
| CN110294847B (zh) * | 2018-12-26 | 2021-07-20 | 杭州师范大学 | 一种提高低粘度硅油在有氧环境中热稳定性的方法 |
| DE102021200991B4 (de) | 2021-02-03 | 2022-05-19 | E.G.O. Elektro-Gerätebau GmbH | Ausdehnungssystem mit einem Arbeitsfluid |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB610127A (en) * | 1945-04-26 | 1948-10-12 | Corning Glass Works | Improvements in or relating to thermostatic regulators |
| US3159033A (en) * | 1959-03-24 | 1964-12-01 | Flexonics Corp | Mechanical motion transmitter |
| US3529770A (en) * | 1968-08-02 | 1970-09-22 | Gen Motors Corp | Adjustable hydraulic thermostatic control with relief |
| US3680022A (en) * | 1971-01-14 | 1972-07-25 | Gen Motors Corp | Hydraulic thermostat |
| SE445590B (sv) * | 1979-09-17 | 1986-06-30 | Arcu Armaturind | Termostatisk givare och sett att tillverka densamma |
| JPH01190758A (ja) * | 1988-01-26 | 1989-07-31 | Shin Etsu Chem Co Ltd | 難燃性シリコーンオイル組成物 |
| EP0397507B1 (de) * | 1989-05-10 | 1995-03-15 | Tonen Corporation | Silikonflüssigkeiten für Visco-Kupplungen |
| US5578238A (en) * | 1992-10-30 | 1996-11-26 | Lord Corporation | Magnetorheological materials utilizing surface-modified particles |
| DE19824871A1 (de) * | 1998-06-04 | 1999-12-09 | Ego Elektro Geraetebau Gmbh | Temperaturschalter, insbesondere einstellbarer Temperaturregler |
| CN1132920C (zh) * | 2000-11-02 | 2003-12-31 | 李墨菊 | 高温润滑脂及其配制工艺 |
| DE10059003A1 (de) * | 2000-11-28 | 2002-07-04 | Degussa | Verfahren zur Hitzestabilisierung von Polymeren |
-
2004
- 2004-08-27 DE DE102004042829A patent/DE102004042829A1/de not_active Withdrawn
-
2005
- 2005-08-25 CN CN2005800289805A patent/CN101023333B/zh not_active Expired - Fee Related
- 2005-08-25 EP EP05774313A patent/EP1792151A1/de not_active Withdrawn
- 2005-08-25 WO PCT/EP2005/009169 patent/WO2006024451A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006024451A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004042829A1 (de) | 2006-03-02 |
| WO2006024451A1 (de) | 2006-03-09 |
| CN101023333B (zh) | 2011-01-12 |
| CN101023333A (zh) | 2007-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17P | Request for examination filed |
Effective date: 20070130 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20080229 |
|
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: G01K 5/00 20060101AFI20120427BHEP Ipc: G01K 5/46 20060101ALI20120427BHEP Ipc: C08G 77/38 20060101ALI20120427BHEP Ipc: C10M 169/04 20060101ALI20120427BHEP Ipc: C08G 77/32 20060101ALI20120427BHEP |
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| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20121109 |