CN109709246A - Temperature overcharges small gas-chromatography column oven - Google Patents
Temperature overcharges small gas-chromatography column oven Download PDFInfo
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- CN109709246A CN109709246A CN201811637701.0A CN201811637701A CN109709246A CN 109709246 A CN109709246 A CN 109709246A CN 201811637701 A CN201811637701 A CN 201811637701A CN 109709246 A CN109709246 A CN 109709246A
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Abstract
It overcharges small gas-chromatography column oven the invention discloses a kind of temperature, including cabinet and is fixedly installed on the intracorporal chromatographic column of the case, the side of the cabinet offers the chromatographic column import being pierced by for chromatographic column both ends and column outlet respectively；The coil-like and coil-like chromatographic column surface closing twist resistive platinum wire through insulation processing that is wound with surface is coiled into the middle part of the chromatographic column；Temperature measuring circuit board is additionally provided in the cabinet, the resistive platinum wire and the temperature measuring circuit board are electrically connected；The resistive platinum wire also is used to measure the temperature of heating for heating chromatographic column as temperature sensor.Gas-chromatography column oven of the present invention, small in size, temperature overcharges small, is conducive to extend the service life of chromatographic column.
Description
Technical field
The present invention relates to gas-chromatography column oven technical fields, and in particular to a kind of temperature overcharges small gas-chromatography column temperature
Case.
Background technique
When chromatography separation principle is dissolved in each component in mobile phase by stationary phase, due to having an effect with stationary phase
Size and power it is different, the residence time is different in stationary phase, thus the separation process successively flowed out from stationary phase, in fact
Matter is the equilibrium process of an adsorption and de-adsorption.The temperature of chromatographic column and mobile phase affects the separation balance of component, for
Mobile phase temperature control requirement is relatively high, and the temperature that mobile phase is difficult to guarantee using air-conditioning in entire interior is consistent.
High performance liquid chromatograph can carry out separation analysis to sample with chromatography separation principle, be widely used in chemistry and biochemical analysis
In, chromatographic column is the core component that high performance liquid chromatograph separates sample, when separating sample, by column oven to color
The use temperature of spectrum column is accurately controlled, and can guarantee the accuracy of analysis sample result.
Summary of the invention
Small gas-chromatography column oven is overcharged the technical problem to be solved in the present invention is to provide a kind of temperature, the column temperature cabinet
Product is small, and temperature overcharges small, is conducive to extend the service life of chromatographic column.
Small gas-chromatography column oven is overcharged in order to solve the above-mentioned technical problems, the present invention provides a kind of temperature, including
Cabinet and it is fixedly installed on the intracorporal chromatographic column of the case, the side of the cabinet offers respectively to be pierced by for chromatographic column both ends
Chromatographic column import and column outlet；
It is coiled into coil-like and coil-like chromatographic column surface closing twist in the middle part of the chromatographic column and is wound with surface warp
The resistive platinum wire of insulation processing；Temperature measuring circuit board, the resistive platinum wire and temperature measuring circuit board electricity are additionally provided in the cabinet
Property connection；
The resistive platinum wire also is used to measure the temperature of heating for heating chromatographic column as temperature sensor.
In the prior art, heating device and temperature measuring equipment are provided separately, this both increases component, improve cost；
It is provided separately the retardance for leading to test, such temperature overcharges seriously, can seriously affect the service life of chromatographic column.In the present invention, Shen
It asks someone for heating device and temperature measuring equipment to be combined into one, surface is selected to be wrapped in color through the resistive platinum wire closing twist of insulation processing
It composes on column, chromatographic column is heated；Resistive platinum wire and temperature measuring circuit board are electrically connected simultaneously, pass through calculation built in temperature measuring circuit board
Method carrys out thermometric.Such benefit is to not only improve the miniaturization of column oven, while the delay of thermometric is low, and feedback is fast, and temperature overcharges
It is easy to control, is conducive to extend the service life of chromatographic column.
Preferably, the outside of the chromatographic column and resistive platinum wire entirety is enclosed with heat conducting film.Heat conducting film plays the role of
It is: heat transfer can be accelerated when heated, improves the rate of heating and the uniformity of heating；In cooling, promotion can be played
The effect of heat dissipation.The heat conducting film is the preferably aluminium foil made of the high material of thermal coefficient.
Preferably, the side of the cabinet is further fixed on chromatographic column fixed block, it is equipped in the chromatographic column fixed block solid
Determine hole, the both ends of the chromatographic column are connected in the fixation hole in the chromatographic column fixed block.
Preferably, what the cabinet was formed by mutually matching the upper cover and lower cover being connected together.The upper cover and lower cover
It is preferably prepared by metal, is conducive to radiate.
Preferably, being fixedly installed the bracket for fixed support chromatographic column on the lower lid.
Preferably, offering multiple heat release holes in the upper cover and lower cover.
Preferably, being fixedly installed radiator fan on the upper cover and/or lower lid.
Preferably, offering mounting groove on the upper cover and/or lower lid.
Beneficial effects of the present invention:
Gas-chromatography column oven of the invention, single point temperature control trueness error can achieve≤± 0.1 DEG C, bulk temperature
Inhomogeneities is less than ± 0.5 DEG C, and temperature overcharges≤± 2 DEG C.
Gas-chromatography column oven of the invention is small in size, low in energy consumption, and heating is quick and overcharges low, is suitable for quickly analysis；
And it is low due to overcharging, using life of chromatographic column is long.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the gas-chromatography column oven of one embodiment of the invention；
Figure label explanation:
110, upper cover；111, heat release hole；112, mounting groove；120, lower cover；121, fixed column；130, power supply and control connect
Mouthful；140, bracket；141, nut；150, chromatographic column fixed block；151, fixation hole；160, S type pressing plate；
210, chromatographic column；220, resistive platinum wire；230, ceramic tube；240, turnbuckle；
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Shown in referring to Fig.1, temperature of the invention overcharges an embodiment of small gas-chromatography column oven, including cabinet and
It is fixedly installed on the intracorporal chromatographic column 210 of the case.
The cabinet is made of the upper cover 110 and lower cover 120 that are mutually coupled, wherein upper cover 110 and lower cover 120 are
Screw by being located at corner location is fixed together, and multiple heat release holes 111 are densely covered in upper cover 110 and lower cover 120.Upper cover 110
It is preferred made of metal with lower cover 120, be conducive to radiate.In order to further increase heat-sinking capability, in some implementations
In mode, radiator fan is fixedly installed on upper cover 110 and/or lower cover 120.
The side of cabinet is equipped with power supply and control interface 130, and the other side offers respectively to be pierced by for 210 both ends of chromatographic column
Chromatographic column import and column outlet.In addition, the side of cabinet is additionally provided with chromatographic column fixed block 150, the chromatographic column is fixed
Block 150 is fixed on the side by S type pressing plate 160.A pair of of fixation hole 151 is offered in chromatographic column fixed block 150, it is described
The both ends of chromatographic column are connected in the fixation hole 151 in the chromatographic column fixed block 150, and the spiral shell being connected in fixation hole 151
On Threaded Connector Coupling 240.Preferably, ceramic tube 230 is additionally provided in fixation hole 151.
In the present embodiment, the middle part of chromatographic column 210 be coiled into it is coil-like, and coil-like part surface closing twist winding
There is surface through the resistive platinum wire 220 of insulation processing, the outside of 220 entirety of chromatographic column 210 and resistive platinum wire is enclosed with aluminium foil.Platinum electricity
Resistance silk 220 is for heating chromatographic column 210, and surface is through insulation processing, so that resistive platinum wire 220 be avoided to contact and occur with aluminium foil
Short circuit.Aluminium foil can accelerate heat transfer when heated, improve the rate of heating and the uniformity of heating；In cooling, Neng Gouqi
To the effect for promoting heat dissipation.
Temperature measuring circuit board is additionally provided in cabinet, the resistive platinum wire 220 is electrically connected with temperature measuring circuit board, passes through thermometric electricity
Road plate built-in algorithm carrys out thermometric.
In some embodiments, the bracket 140 for being used to support chromatographic column 210 is additionally provided on lower cover 120.In the present embodiment,
The bracket 140 is in Y-shaped, is installed in a pair of of fixed column 121 on lower cover 120 by nut 141, chromatographic column 210
Coil-like part is bound on the bracket 140.Certainly, those skilled in the art will be seen that, in other embodiments, branch
The shape of frame 140 is including but not limited to as shown in the figure.
Peace is also provided on upper cover 110 and/or lower cover 120 in some embodiments for the ease of installation chromatographic column incubator
Tankage 112.
The gas-chromatography column oven of the present embodiment, not only may be implemented thermostatic control, but also temperature programming control may be implemented
System, single point temperature control trueness error can achieve≤± 0.1 DEG C, and bulk temperature inhomogeneities is less than ± 0.5 DEG C, and temperature overcharges
≤±2℃；And it is small in size, low in energy consumption, heating is quick and overcharges low, 210 long service life of chromatographic column, is suitable for quickly analysis.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (9)
1. a kind of temperature overcharges small gas-chromatography column oven, including cabinet and it is fixedly installed on the intracorporal chromatography of the case
Column, the side of the cabinet offer the chromatographic column import being pierced by for chromatographic column both ends and column outlet respectively；Its feature exists
In,
It is coiled into coil-like and coil-like chromatographic column surface closing twist in the middle part of the chromatographic column and is wound with surface through insulating
The resistive platinum wire of processing；Temperature measuring circuit board is additionally provided in the cabinet, the resistive platinum wire electrically connects with the temperature measuring circuit board
It connects；
The resistive platinum wire also is used to measure the temperature of heating for heating chromatographic column as temperature sensor.
2. temperature as described in claim 1 overcharges small gas-chromatography column oven, which is characterized in that the chromatographic column and platinum electricity
The outside of resistance silk entirety is enclosed with heat conducting film.
3. temperature as claimed in claim 2 overcharges small gas-chromatography column oven, which is characterized in that the heat conducting film is aluminium
Foil.
4. temperature as described in claim 1 overcharges small gas-chromatography column oven, which is characterized in that the side of the cabinet is also
It is fixed with chromatographic column fixed block, is equipped with fixation hole in the chromatographic column fixed block, the both ends of the chromatographic column are connected to the color
It composes in the fixation hole in column fixed block.
5. temperature as described in claim 1 overcharges small gas-chromatography column oven, which is characterized in that the cabinet is by mutual
With the upper cover and lower cover composition being connected together.
6. temperature as claimed in claim 5 overcharges small gas-chromatography column oven, which is characterized in that fixation is set on the lower lid
It is equipped with the bracket for fixed support chromatographic column.
7. temperature as claimed in claim 5 overcharges small gas-chromatography column oven, which is characterized in that in the upper cover and lower cover
Offer multiple heat release holes.
8. temperature as claimed in claim 5 overcharges small gas-chromatography column oven, which is characterized in that the upper cover and/or under
It covers and is fixedly installed radiator fan.
9. temperature as claimed in claim 5 overcharges small gas-chromatography column oven, which is characterized in that the upper cover and/or under
It covers and offers mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637701.0A CN109709246A (en) | 2018-12-29 | 2018-12-29 | Temperature overcharges small gas-chromatography column oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637701.0A CN109709246A (en) | 2018-12-29 | 2018-12-29 | Temperature overcharges small gas-chromatography column oven |
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| Publication Number | Publication Date |
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| CN109709246A true CN109709246A (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811637701.0A Pending CN109709246A (en) | 2018-12-29 | 2018-12-29 | Temperature overcharges small gas-chromatography column oven |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198240A (en) * | 2020-08-26 | 2021-01-08 | 浙江中环瑞蓝科技发展有限公司 | Miniature gas chromatography column box |
| CN113607866A (en) * | 2021-07-14 | 2021-11-05 | 杭州谱育科技发展有限公司 | Apparatus for controlling temperature of chromatographic column and method for manufacturing the same |
| CN113804809A (en) * | 2021-09-26 | 2021-12-17 | 上海裕达实业有限公司 | Portable gas chromatography-mass spectrometer rapid temperature control device |
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|---|---|---|---|---|
| CN2525514Y (en) * | 2002-01-09 | 2002-12-11 | 复旦大学 | Heater on compact gas chromatographic column |
| CN104181262A (en) * | 2013-05-23 | 2014-12-03 | 中国科学院大连化学物理研究所 | Cold zone-free low-power dissipation miniature furnace case |
| CN106198602A (en) * | 2016-07-01 | 2016-12-07 | 电子科技大学 | A kind of measurement device for thin-film material thermophysical property |
| CN206420839U (en) * | 2017-02-09 | 2017-08-18 | 东莞市四丰检测技术有限公司 | Gas chromatographic detection instrument |
| CN206505053U (en) * | 2017-01-16 | 2017-09-19 | 北京雪迪龙科技股份有限公司 | Directly heat capillary chromatography column device and the post case with the device |
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2018
- 2018-12-29 CN CN201811637701.0A patent/CN109709246A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2525514Y (en) * | 2002-01-09 | 2002-12-11 | 复旦大学 | Heater on compact gas chromatographic column |
| CN104181262A (en) * | 2013-05-23 | 2014-12-03 | 中国科学院大连化学物理研究所 | Cold zone-free low-power dissipation miniature furnace case |
| CN106198602A (en) * | 2016-07-01 | 2016-12-07 | 电子科技大学 | A kind of measurement device for thin-film material thermophysical property |
| CN206505053U (en) * | 2017-01-16 | 2017-09-19 | 北京雪迪龙科技股份有限公司 | Directly heat capillary chromatography column device and the post case with the device |
| CN206420839U (en) * | 2017-02-09 | 2017-08-18 | 东莞市四丰检测技术有限公司 | Gas chromatographic detection instrument |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198240A (en) * | 2020-08-26 | 2021-01-08 | 浙江中环瑞蓝科技发展有限公司 | Miniature gas chromatography column box |
| CN113607866A (en) * | 2021-07-14 | 2021-11-05 | 杭州谱育科技发展有限公司 | Apparatus for controlling temperature of chromatographic column and method for manufacturing the same |
| CN113804809A (en) * | 2021-09-26 | 2021-12-17 | 上海裕达实业有限公司 | Portable gas chromatography-mass spectrometer rapid temperature control device |
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Application publication date: 20190503 |