CN114594196A - Independent column incubator for double-fan liquid chromatography - Google Patents
Independent column incubator for double-fan liquid chromatography Download PDFInfo
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- CN114594196A CN114594196A CN202210227348.9A CN202210227348A CN114594196A CN 114594196 A CN114594196 A CN 114594196A CN 202210227348 A CN202210227348 A CN 202210227348A CN 114594196 A CN114594196 A CN 114594196A
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- fan
- column
- oven
- chromatographic column
- liquid chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/50—Conditioning of the sorbent material or stationary liquid
- G01N30/52—Physical parameters
- G01N30/54—Temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/30—Control of physical parameters of the fluid carrier of temperature
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention relates to the field of analytical instrument equipment, in particular to a stand-alone dual-fan column incubator for liquid chromatography, which comprises a casing and a box door, wherein a closed cavity is arranged in the casing and is enclosed by the box door, an inner container, a chromatographic column, a fan, radiating fins and a heating device are arranged in the closed cavity, the inner container is fixedly arranged in the closed cavity, the chromatographic column and the radiating fins are respectively arranged on two sides of the inner container, the heating device is arranged on one side, away from the chromatographic column, of the radiating fins, the fan is arranged between the chromatographic column and the radiating fins and drives air to move towards the radiating fins, and ventilation holes are formed in the inner container. According to the invention, the upper part and the lower part of the column temperature box are adjusted to have different heat dissipation efficiencies by the two fans with different rotating speeds arranged up and down, so that the temperature in a chamber for placing a chromatographic column in the column temperature box is uniform and consistent; the ventilation hole that the cooperation slope set up, the flow direction when laminating air is discharged by fan department reduces the windage of circulation of air, improves the turbulent degree when the air current flows simultaneously, improves heat exchange efficiency.
Description
Technical Field
The invention relates to the field of analytical instrument equipment, in particular to a column temperature box for independent double-fan liquid chromatography.
Background
The temperature of the liquid chromatographic column has a great influence on the adsorption and analysis results of the components in the liquid chromatographic column, and the accuracy of the separation result of the chromatographic column can be influenced by the change of the temperature and the temperature difference in the column temperature box. In a traditional column incubator, because hot air rises, the air temperature at the upper part of the column incubator is higher, and a temperature gradient is formed in the column incubator, so that the temperatures of different positions of a chromatographic column are different, and the problem of low accuracy of an analysis result is caused.
Disclosure of Invention
The invention aims to solve the problems and provides a column incubator for independent double-fan liquid chromatography, which adopts the following technical scheme:
the utility model provides a stand alone type double fan column incubator for liquid chromatogram, includes casing and chamber door, sets up in the casing and encloses the closed chamber that closes formation with the chamber door, sets up inner bag, chromatographic column, fan, fin and heating device in the closed chamber, the inner bag is fixed to be set up in the closed chamber, and chromatographic column and fin set up respectively in the inner bag both sides, and heating device sets up the one side of keeping away from the chromatographic column at the fin, and the fan setting is between chromatographic column and fin to drive air and remove to the fin direction, set up the ventilation hole on the inner bag.
On the basis of the scheme, the fan comprises a first fan and a second fan.
On the basis of the scheme, the first fan is arranged above the second fan, and the rotating speed of the first fan is lower than that of the second fan.
Preferably, the number of the vent holes is multiple, and the vent holes are long-strip-shaped through holes which are obliquely arranged.
Preferably, the inner container is provided with a temperature measuring rod facing one side of the chromatographic column, the temperature measuring rod is a hollow aluminum tube, and a temperature sensor is arranged in a central cavity of the temperature measuring rod.
On the basis of the scheme, the number of the temperature measuring rods is 2, and the temperature measuring rods are distributed along the vertical direction.
Preferably, the closed cavity is formed by enclosing an inner frame, a box body heat insulation layer and a box door, the inner frame is fixedly arranged on the machine shell, the box body heat insulation layer is arranged on one side, away from the box door, of the inner frame and is abutted against the inner frame, the inner container is clamped between the inner frame and the box body heat insulation layer, and the inner frame and the box body heat insulation layer are both made of heat insulation materials; the casing internal fixation sets up the clamp plate, and the clamp plate keeps away from one side butt of inside casing with the box heat preservation.
On the basis of the scheme, a rear cover is arranged on one side, close to the pressing plate, of the box body heat-insulating layer, and the pressing plate is in threaded connection with a compression screw which is abutted to the rear cover.
Preferably, the door comprises an outer door plate, a door shell and a door shell lining which are sequentially arranged from outside to inside, a door heat-insulating layer is filled between the door shell and the door shell lining, and a door sealing strip is arranged on one side, close to the shell, of the door shell lining.
Preferably, the chromatographic column is clamped and fixed by a column clamp, the column clamp comprises a column clamp cover and a column clamp seat, the column clamp cover is used for clamping the chromatographic column, the column clamp seat is arranged on the inner container, and the spring hinge is abutted between the column clamp seat and the column clamp cover.
The invention has the beneficial effects that:
1. the high-temperature air flows uniformly through the two fans with different rotating speeds arranged up and down, and the difference of the heat dissipation efficiency of the upper part and the lower part of the column temperature box is effectively adjusted by controlling the difference of the rotating speeds, so that the temperature in a chamber for placing the chromatographic column in the column temperature box is uniform and consistent;
2. the air in the column oven is discharged to the radiating fins under the action of the fan and then is reflected into the cavity by the radiating fins, so that the high-temperature air is uniformly distributed, and the problem of heat concentration caused by direct discharge of the fan in the prior art is solved; the air flow direction of air discharged from the fan is matched with the obliquely arranged vent holes, so that the air resistance of air circulation is reduced, the turbulence degree of airflow flowing is improved, and the heat exchange efficiency is improved;
3. fix the box heat preservation through butt, the mode that presss from both sides tightly, guarantee that the overall structure of heat preservation is not destroyed, replace and pierce through the mode that the heat preservation was fixed through the bolt in the past, improve the adiabatic heat preservation effect of heat preservation.
Drawings
FIG. 1: the invention has a schematic structure (partially cut away);
FIG. 2: the invention is a partial enlarged view of part A in figure 1;
FIG. 3: the invention is a schematic diagram of a pressing plate structure and an installation position;
FIG. 4: the structure of the box door of the invention is cut;
FIG. 5: the invention is a whole outline drawing.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 4, a stand-alone dual-fan column incubator for liquid chromatography comprises a casing 21 and a box door, wherein a closed cavity enclosed with the box door is arranged in the casing 21, an inner container 32, a chromatographic column 52, a fan, a heat sink 44 and a heating device 45 are arranged in the closed cavity, the inner container 32 is fixedly arranged in the closed cavity, the chromatographic column 52 and the heat sink 44 are respectively arranged at two sides of the inner container 32, the chromatographic column 52 is clamped and fixed by a column clamp 51, the column clamp 51 comprises a column clamp cover and a column clamp seat for clamping the chromatographic column 52, the column clamp seat is arranged on the inner container 32, a spring hinge is abutted between the column clamp seat and the column clamp cover, specifically, two sides of the spring hinge are respectively fixedly connected to the column clamp seat and the column clamp cover through screws, and the chromatographic column 52 can be installed or replaced by pressing one end of the column clamp cover and the column clamp seat. The heating device 45 is arranged on the side of the radiating fin 44 far away from the chromatographic column 52, the fan is arranged between the chromatographic column 52 and the radiating fin 44 and drives air to move towards the radiating fin 44, and the inner container 32 is provided with a vent hole 33. The heat radiating fins 44 are heated by the heating device 45, the air passing through the heat radiating fins 44 is heated, the air on one side of the chromatographic column 52 is discharged to the heat radiating fins 44 under the action of the fan, and is reflected to other positions in the closed cavity through the heat radiating fins 44, so that the heat distribution is more uniform.
Preferably, the blower includes a first blower 41 and a second blower 42, and the efficiency and uniformity of heat diffusion are improved by the plurality of blowers. For solving the temperature gradient in the column incubator, the first fan 41 is arranged above the second fan 42, namely the first fan 41 is arranged on the upper part of the closed cavity, the second fan 42 is arranged on the lower part of the closed cavity, and the rotating speed of the first fan 41 is lower than that of the second fan 42, so that the heat diffusion efficiency of the lower part of the closed cavity is improved, the temperature of the lower part is improved, the effect of removing the temperature gradient is achieved, and the temperature difference of different positions of the chromatographic column 52 is prevented.
Preferably, the quantity of ventilation hole 33 is a plurality of, and for the rectangular shape through-hole that the slope set up, ventilation hole 33 laminating air flow direction sets up on the one hand, can effectively reduce the windage that the air flow in-process received, improves air heat exchange efficiency, maintains the stability of sealing intracavity temperature, and ventilation hole 33 that on the other hand slope set up can improve the turbulent degree that the air flow in-process to improve the even degree of temperature of sealing the intracavity.
The inner container 32 is provided with a temperature measuring rod 53 on one side facing the chromatographic column 52, the temperature measuring rod 53 is a hollow aluminum tube, a temperature sensor is arranged in a central cavity of the temperature measuring rod 53, the temperature measuring rod 53 can be used for simulating the chromatographic column 52 by the scheme, so that the temperature sensor detects a temperature signal of the chromatographic column 52 instead of a temperature signal in a closed cavity in the casing 21, the temperature is monitored more accurately, and parameters such as the temperature of the heating device 45, the rotating speed of the fan and the like are adjusted accordingly. Optionally, the number of the temperature measuring rods 53 is 2, and the temperature measuring rods are distributed along the vertical direction, the temperature sensors in the upper and lower temperature measuring rods 53 are used for respectively detecting the temperature of the upper part and the lower part of the closed cavity, and the rotating speed difference of the first fan 41 and the second fan 42 are adjusted according to the temperature data and the temperature difference, so that the temperature uniformity and the accuracy in the closed cavity are ensured.
The closed cavity is enclosed by inner frame 31, box heat preservation 61 and chamber door and closes and form, inner frame 31 is fixed to be set up on casing 21, and box heat preservation 61 sets up the one side of keeping away from the chamber door in inner frame 31 to with inner frame 31 butt, inner bag 32 joint is between inner frame 31 and box heat preservation 61, and inner frame 31 and box heat preservation 61 are made by the heat-insulating material, thereby play good heat preservation effect. A pressing plate 64 is fixedly arranged in the machine shell 21, and the pressing plate 64 is abutted against one side of the box body heat-insulating layer 61 far away from the inner frame 31. A rear cover 63 is arranged on one side, close to a pressing plate 64, of the box body heat insulation layer 61, and a pressing screw is in threaded connection with the pressing plate 64 and is abutted against the rear cover 63. Through above-mentioned scheme, compress tightly box heat preservation 61 on inside casing 31 completely, avoid using fixing screw etc. to destroy the integrality of box heat preservation 61, prevent that metal products such as screw from causing the heat loss, guarantee the heat preservation effect of box heat preservation 61. Because the box insulating layer 61 has elasticity, the pressing force of the pressing screw on the rear cover 63 and the box insulating layer 61 is adjusted by adjusting the relative position of the pressing screw and the pressing plate 64. The box heat preservation layer 61 is close to the fixed back plate 62 that sets up in inner bag 32 one side, and heating device 45 and fin 44 set up on the back plate 62, avoid causing the destruction to box heat preservation layer 61.
As shown in fig. 4, the door includes an outer door panel 12, a door shell 11 and a door shell lining 13, which are sequentially arranged from outside to inside, a door insulating layer 14 is filled between the door shell 11 and the door shell lining 13, a door seal 15 is arranged on one side of the door shell lining 13 close to the casing 21, a magnetic stripe is arranged inside the door seal 15 close to one side of the casing 21, and the magnetic stripe is arranged corresponding to the position of the casing 21 outside the inner frame 31.
The present invention has been described above by way of example, but the present invention is not limited to the above-described specific embodiments, and any modification or variation made based on the present invention is within the scope of the present invention as claimed.
Claims (10)
1. The utility model provides a stand alone type double fan column incubator for liquid chromatogram, its characterized in that includes casing (21) and chamber door, sets up in casing (21) and encloses the closed chamber that closes and form with the chamber door, sets up inner bag (32), chromatographic column (52), fan, fin (44) and heating device (45) in the closed chamber, inner bag (32) are fixed to be set up in the closed chamber, and chromatographic column (52) and fin (44) set up respectively in inner bag (32) both sides, and heating device (45) set up in one side that chromatographic column (52) were kept away from in fin (44), and the fan setting is between chromatographic column (52) and fin (44) to drive air and to fin (44) direction removal, set up ventilation hole (33) on inner bag (32).
2. A self-contained dual-fan column oven for liquid chromatography as claimed in claim 1 wherein said fan comprises a first fan (41) and a second fan (42).
3. A column oven for stand alone dual fan liquid chromatography as claimed in claim 2 wherein said first fan (41) is disposed above said second fan (42) and the rotational speed of said first fan (41) is lower than the rotational speed of said second fan (42).
4. A column oven for stand-alone double fan liquid chromatography as claimed in claim 1, wherein said vent holes (33) are plural and are elongated through holes arranged obliquely.
5. The column oven for stand-alone dual-fan liquid chromatography according to claim 1, wherein a temperature measuring rod (53) is arranged on one side of the inner container (32) facing the chromatographic column (52), the temperature measuring rod (53) is a hollow aluminum tube, and a temperature sensor is arranged in a central cavity of the temperature measuring rod (53).
6. A column oven for stand-alone double fan liquid chromatography according to claim 5, wherein the number of said temperature measuring rods (53) is 2, and they are distributed in the vertical direction.
7. The column oven for the freestanding dual-fan liquid chromatography according to claim 1, wherein the closed cavity is enclosed by an inner frame (31), a box body heat-insulating layer (61) and a box door, the inner frame (31) is fixedly arranged on the casing (21), the box body heat-insulating layer (61) is arranged on one side of the inner frame (31) far away from the box door and is abutted against the inner frame (31), the inner container (32) is clamped between the inner frame (31) and the box body heat-insulating layer (61), and the inner frame (31) and the box body heat-insulating layer (61) are both made of heat-insulating materials; a pressing plate (64) is fixedly arranged in the machine shell (21), and the pressing plate (64) is abutted against one side, far away from the inner frame (31), of the box body heat-insulating layer (61).
8. The column oven for the liquid chromatography of the independent double-fan type according to claim 7, wherein a rear cover (63) is arranged on one side of the box body insulating layer (61) close to the pressing plate (64), a compression screw is connected to the pressing plate (64) in a threaded mode, and the compression screw is abutted to the rear cover (63).
9. The column oven for the stand-alone dual-fan liquid chromatography as claimed in claim 1, wherein the oven door comprises an outer door plate (12), an oven door shell (11) and an oven door shell lining (13) which are sequentially arranged from outside to inside, an oven door insulating layer (14) is filled between the oven door shell (11) and the oven door shell lining (13), and an oven door sealing strip (15) is arranged on one side of the oven door shell lining (13) close to the enclosure (21).
10. The column oven for the stand-alone dual-fan liquid chromatography of claim 1, wherein the chromatographic column (52) is clamped and fixed by a column clamp (51), the column clamp (51) comprises a column clamp cover and a column clamp base for clamping the chromatographic column (52), the column clamp base is arranged on the inner container (32), and the spring hinge is abutted between the column clamp base and the column clamp cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210227348.9A CN114594196B (en) | 2022-03-08 | 2022-03-08 | Column incubator for independent double-fan liquid chromatograph |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210227348.9A CN114594196B (en) | 2022-03-08 | 2022-03-08 | Column incubator for independent double-fan liquid chromatograph |
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| CN114594196A true CN114594196A (en) | 2022-06-07 |
| CN114594196B CN114594196B (en) | 2024-07-26 |
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| CN202210227348.9A Active CN114594196B (en) | 2022-03-08 | 2022-03-08 | Column incubator for independent double-fan liquid chromatograph |
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| CN114594196B (en) | 2024-07-26 |
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