CN2412217Y - Instrument for analyzing edible oil quality when used many times after heated - Google Patents
Instrument for analyzing edible oil quality when used many times after heated Download PDFInfo
- Publication number
- CN2412217Y CN2412217Y CN 99235000 CN99235000U CN2412217Y CN 2412217 Y CN2412217 Y CN 2412217Y CN 99235000 CN99235000 CN 99235000 CN 99235000 U CN99235000 U CN 99235000U CN 2412217 Y CN2412217 Y CN 2412217Y
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- China
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- oil
- capacitor
- instrument
- edible oil
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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.)
- Expired - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to a special instrument for analyzing edible oil quality change when used a plurality of times after heated. The deterioration degree of oil can be judged according to the total content of polarized molecules. At present no special instrument can be used. When a chromatograph is used for measurement, the price is high, and the time is long. The instrument is mainly composed of a capacitance meter, an air gap parallel plate capacitor and an oil cup. When the utility model is used, capacitance values of the capacitor which is in the air and is completely immersed in an oil sample are respectively measured, the relative dielectric constant of the oil sample can be worked out, and the relative dielectric constant is increased following the increase of the total content of polarized molecules. The relative dielectric constant indicates the total content of the polarized molecules in oil, and the deterioration degree of the quality of oil can be known. The utility model has the advantages of simple structure and easy operation.
Description
The utility model relates to a kind of edible oil and fat are used the back mass change by heating for multiple times instrumentation of measuring.
Edible oil and fat extensively are used for the cooking and food processing in large quantities, and grease after heating is used repeatedly for a long time a lot of physics and chemical change can take place, and decomposes or polymerization as fatty acid, generates novel substance, and wherein a part is a polar molecule.Generally about 3%, along with increasing heat time heating time and the heating increased frequency, this content increases gradually for Jia Re grease not, its polar molecule total content, and the foreign study personnel think that when reaching 25%-27% this grease should not re-use.The debase degree of grease in heating for multiple times is used can be judged with its polar molecule total content.And the polar molecule total content is high more, and specific inductive capacity is big more.Therefore can change to determine the variation of polar molecule total content with Measuring Dielectric Constant.Also there is not at present special-purpose surveying instrument.The chromatograph that uses must under lab use now, and by professional's operation, Measuring Time is long, the instrument costliness.
The purpose of this utility model provides a kind of measurement edible oil and fat of special use by the instrument of heating for multiple times use back debase degree.It is cheap, and is easy to use.Can obtain measurement result in time, judge the degree that degenerates of oil quality then.
The purpose of this utility model is achieved in that and it is characterized in that: instrument is mainly by capacitance meter, and air-gap plane-parallel capacitor and lubricating cup are formed, capacitor and lubricating cup insulation, electrical ties between capacitor and the capacitance meter.The principles of science of the utility model foundation is: the aerial electric capacity of capacitor is C.The electric capacity that capacitor is immersed in the tested oil sample is C
1, then the relative dielectric constant of oil sample is ε
1=C
1/ C
0, the variation of its polar molecule total content has been represented in the variation of the relative dielectric constant of grease, thereby can determine the variation of oil quality.
The mensuration grease of being made by such scheme is used the instrumentation of back mass change simple in structure by heating for multiple times, and instrument is light and handy, and visual result is easy to use, and cheap, can be used for the working site easily.
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is the components and parts arrangement plan of instrument.1. oil samples among the figure; 2. instrument stand; 3. lubricating cup; 4. air-gap plane-parallel capacitor; 5. insulated conductor; 6. binding post; 7. capacitance meter.
Capacitance meter (7) is fixed on the instrument stand (2), lubricating cup (3) can separate with capacitor (4), mutual insulating, lubricating cup (3) can take off from instrument stand (2), so that change oil sample (1), capacitor (4) can also take out from lubricating cup (3), so that the oil sample between pole plate (1) flows out fully, the size of capacitor (4) should be placed on lubricating cup (3) when interior with it, is flooded by oil sample (1) fully to be as the criterion.During measurement, capacitor (4) is by insulated conductor (5), and binding post (6) is electrically connected with capacitance meter (7).
The aerial capacitor C of air-gap capacitor
0Be constant, can only measure once, note, be immersed in fully in the oil sample after the capacitor C, as long as do division C/C one time when having measured capacitor
0Just the DIELECTRIC CONSTANT of this kind oil sample can be calculated,, the degree that degenerates of oil quality can be known according to the variation of specific inductive capacity.
Claims (2)
1. measure edible oil and fat by the instrumentation of heating for multiple times use back mass change for one kind, it is characterized in that: instrument mainly is made up of capacitance meter, air-gap plane-parallel capacitor and lubricating cup, capacitor and lubricating cup insulation, electrical ties between capacitor and the capacitance meter.
2. a kind of edible oil and fat of measuring according to claim 1 are used the instrumentation of mass change afterwards by heating for multiple times, it is characterized in that, can be by the complete submergence of oil sample when the physical dimension of parallel-plate air-gap capacitor should make it be placed in the lubricating cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99235000 CN2412217Y (en) | 1999-10-14 | 1999-10-14 | Instrument for analyzing edible oil quality when used many times after heated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99235000 CN2412217Y (en) | 1999-10-14 | 1999-10-14 | Instrument for analyzing edible oil quality when used many times after heated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2412217Y true CN2412217Y (en) | 2000-12-27 |
Family
ID=34023033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99235000 Expired - Fee Related CN2412217Y (en) | 1999-10-14 | 1999-10-14 | Instrument for analyzing edible oil quality when used many times after heated |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2412217Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1791796B (en) * | 2003-01-20 | 2010-04-28 | 瑞士联邦理工大学，洛桑(Epfl) | Device for measuring the quality and/or degradation of a fluid, particularly a food oil |
| CN102033084A (en) * | 2010-11-11 | 2011-04-27 | 西安融慧专利产品开发咨询有限责任公司 | Capacitive quick waste oil detection method |
| CN102759550A (en) * | 2011-04-26 | 2012-10-31 | 深圳市亚泰光电技术有限公司 | Oil quality detection probe and detection system |
| CN102998360A (en) * | 2012-12-25 | 2013-03-27 | 重庆勤智科技有限公司 | Online testing method for aging of transformer insulating oil based on electric field induction |
| CN103080735A (en) * | 2010-09-14 | 2013-05-01 | 3M创新有限公司 | Methods and devices for acquiring an oil sample and monitoring the quality thereof |
| CN105823806A (en) * | 2016-05-17 | 2016-08-03 | 淮北师范大学 | Portable edible oil detecting device |
-
1999
- 1999-10-14 CN CN 99235000 patent/CN2412217Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1791796B (en) * | 2003-01-20 | 2010-04-28 | 瑞士联邦理工大学，洛桑(Epfl) | Device for measuring the quality and/or degradation of a fluid, particularly a food oil |
| CN103080735A (en) * | 2010-09-14 | 2013-05-01 | 3M创新有限公司 | Methods and devices for acquiring an oil sample and monitoring the quality thereof |
| CN103080735B (en) * | 2010-09-14 | 2015-01-28 | 3M创新有限公司 | Methods and devices for acquiring an oil sample and monitoring the quality thereof |
| CN102033084A (en) * | 2010-11-11 | 2011-04-27 | 西安融慧专利产品开发咨询有限责任公司 | Capacitive quick waste oil detection method |
| CN102033084B (en) * | 2010-11-11 | 2015-09-16 | 田琼 | A kind of capacitive quick waste oil detection method |
| CN102759550A (en) * | 2011-04-26 | 2012-10-31 | 深圳市亚泰光电技术有限公司 | Oil quality detection probe and detection system |
| CN102998360A (en) * | 2012-12-25 | 2013-03-27 | 重庆勤智科技有限公司 | Online testing method for aging of transformer insulating oil based on electric field induction |
| CN102998360B (en) * | 2012-12-25 | 2015-03-04 | 重庆勤智科技有限公司 | Online testing method for aging of transformer insulating oil based on electric field induction |
| CN105823806A (en) * | 2016-05-17 | 2016-08-03 | 淮北师范大学 | Portable edible oil detecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |