CN104922924A - Temperature controllable electronic condensation rotary evaporator - Google Patents
Temperature controllable electronic condensation rotary evaporator Download PDFInfo
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- CN104922924A CN104922924A CN201510375516.9A CN201510375516A CN104922924A CN 104922924 A CN104922924 A CN 104922924A CN 201510375516 A CN201510375516 A CN 201510375516A CN 104922924 A CN104922924 A CN 104922924A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
The invention discloses a temperature controllable electronic condensation rotary evaporator. The temperature controllable electronic condensation rotary evaporator mainly comprises a distillation flask, a thermostat water bath, a decompression pump, a receiving bottle and an electronic condenser. The electronic condenser comprises a cylindrical electronic refrigeration component, a cylindrical airflow heat radiator and a finned condensing pipe. During distillation, the cold end of the electronic refrigeration component absorbs heat temperature in the condensing pipe, thermal steam in the distillation flask contacts with the wall of the condensing pipe and fins to condense, heat of the hot end is guided out by the heat radiator, and the cold end of the electronic refrigeration component is always kept at low temperature. Since the condensing pipe is isolated from the environment temperature, cooling area is enlarged and condensing temperature is lower, condensing efficiency is improved. By adjusting input current of the electronic condenser, condensation temperature can be precisely controlled; a water-cooling condenser of an existing rotary evaporator can be replaced; the temperature controllable electronic condensation rotary evaporator is simple in structure, convenient to use, easy to manufacture and popularize and has great significance in environment protection and water saving.
Description
Technical field
The present invention relates to the scientific research institutions of the industries such as chemistry, chemical industry, pharmacy, food, environment, institution of higher learning, Corporation R & D mechanism; Specifically belong to experimental instruments technology and manufacture field, particularly relate to a kind of temperature controllable electronics condensation Rotary Evaporators replacing cooling water condensation.
Background technology
For a long time, the whole society is all vigorously advocating using water wisely, and the using water wisely facility in industry, agricultural, service trade, daily life etc., all takes active and effective water-saving method and means, and achieve obvious effect.But, for the research educational institution such as scientific research institutions, school experiment room or the scientific research department self being engaged in water saving research, the waste of experimental study water is but turned a deaf ear to, do not cause society and the enough attention of researcher.Laboratory needs in the experiment of cooling water condensation carrying out scientific research, experimental teaching etc., and generally use tap water direct to connect into experimental provision, in experimentation, running water discharges in a large number, has wasted the clean water of many preciousnesses.Therefore, scientific research, education sector water saving should become the problem that scientific research personnel, educator and the whole society highly pay close attention to.
Rotary Evaporators is the important instrument of the industry research and production such as chemical industry, medicine, biology, be mainly used in continuous still at reduced pressure conditions and reclaim a large amount of easy volatile solvent, its range of application comprises the recovery etc. of solvent after the recovery of Extraction solvent, the recovery of extractant and chromatographic isolation; And relate to material purification, concentrated with to be separated etc. and to test, also commonly use Rotary Evaporators; Its structure comprises: distilling flask, thermostat water bath, condenser, drawdown pump and receiving bottle.General principle is decompression distillation, and namely at reduced pressure conditions, distilling flask rotates continuously, makes to be distilled material and obtains rapid evaporation at distilling flask surface formation large area film.Current Rotary Evaporators all uses water cooled condenser, general is all directly be passed on the condenser of Rotary Evaporators by running water, running water enters condenser makes condenser temperature reduce, discharge from condenser after running water absorbs heat and directly bleed off, when the minimum chilling temperature of general satisfaction requires, the flow velocity of cooling water is approximately 2 liters per minute, is so 120 liters per hour using running water as the water yield of discharge of wastewater, moreover each distillation all needs a few hours, cause the serious waste of water resource.Meet on occasion when cutting off the water suddenly, experiment must be stopped immediately, bring great inconvenience to normal scientific research and experimental work.Rotary Evaporators is lower for the rate of recovery of some lower boiling volatile solvents, existing condenser, general employing low-temperature cooling fluid circulating pump, need ceaselessly to change the effect that frozen water just can reach cooling, circulating pump is used not only to make complex structure, and equipment and instrument cost is high, runs and consume greatly.In addition, the condenser of tradition Rotary Evaporators remains certain defect, main manifestations is if solvent highly volatile to be evaporated, condenser is difficult to reach required condensation temperature, be easy to directly be taken away by vavuum pump, cause and the pump housing to be damaged and while entering air, condensation recovered solvent also must reduce, and so just causes the waste of raw material and the pollution of environment; In addition it is important that traditional condenser cannot carry out the accurate control of relevant temperature for the cut of different condensation temperature; The segmentation condensation of different temperatures is carried out after can not entering condenser to the material of gasification temperature different in system.
Electronic cooling is also known as semiconductor refrigerating, or thermoelectric cooling, thermoelectric cooling, of growing up from the fifties between the subject at Refrigeration Technique and semiconductor technology edge, the P-N junction that it utilizes extraordinary semi-conducting material to form, form thermocouple pair, produce Peltier effect, namely by a kind of New Refrigerating method that direct current freezes, be called the large refrigeration modes in the world three with compression-type refrigeration and absorption refrigeration.Nowadays the development of technology makes the advantage of electronic cooling progressively display.Electronic cooling is a kind of solid coolant mode, it by hole and electronics at the volley directly transferring heat realize.Compared with compressor refrigeration system, do not have mechanical rotation part, without the need to cold-producing medium, noiseless, pollution-free, reliability is high, and the life-span is long, is easy to thermostatic control etc.Present electronic cooling technology obtains applying more widely in many fields such as military affairs, science, Aero-Space, industry, agricultural, health care, biochemistry and daily living articles, particularly along with fast development and the requirement more and more higher to environmental protection of China's economic construction, progressively forbid that atmosphere pollution, the freon that damages the ozone layer are as cold-producing medium, electronic cooling technology more presents tempting prospect; Electronic cooling is new green " low-temperature receiver " of undisputed 21 century.CN 101862689B patent of invention discloses a kind of no-cooling-water direct-cooling electronic condenser experimental provision, it absorbs heat conduction on the collection cooler of condenser pipe interior volume by electronic refrigerating elements cold junction, condensation temperature in system is reduced, belongs to inner-cooled electronic condenser; But the room temperature environment of condenser pipe external contact then also can have certain negative function to the cooling of condenser pipe inside, and in collection cooler conductive process, the loss of chilling temperature also can be caused at electronic refrigerating elements cold junction, the refrigeration of electronic condenser is not still effectively played, and inner-cooled electronic condenser complicated structure, not easily manufactures processing.
Summary of the invention
The present invention, in order to change traditional Rotary Evaporators situation serious to water resource waste, solves its water cooled condenser and is difficult to reach required condensation temperature, make the rate of recovery of low boiling volatile solvent low, cause the waste of raw material and the pollution of environment; Cut for different condensation temperature cannot carry out the accurate control of relevant temperature; Condenser laggard trip temperature segmentation condensation can not be entered to the material of gasification temperature different in reaction system; And built-in electronic condenser is subject to environment temperature and conductive process on many defects such as the impacts that cooling effect produces; Provide one Rotary Evaporators condenser pipe can be made outside to isolate with environment temperature, increase film-cooled heat condensation efficiency is improved, the controllable type electronics condensation Rotary Evaporators of condensation temperature can be adjusted according to different fractions.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of temperature controllable electronics condensation Rotary Evaporators, mainly comprises distilling flask, thermostat water bath, drawdown pump, receiving bottle, electronic condenser; Described electronic condenser is made up of electronic refrigerating elements, airflow radiating device, condenser pipe, described electronic refrigerating elements cylindrically structure, and condenser pipe can be inserted in cylindrical shape electronic refrigerating elements, and electronic refrigerating elements inner surface and condenser pipe outer surface contact with each other; Described airflow radiating device cylindrically structure, cylindrical shape electronic refrigerating elements can be inserted in cylindrical shape airflow radiating device, retains certain intervals between cylindrical shape airflow radiating device inner surface and cylindrical shape electronic refrigerating elements outer surface; Described condenser pipe inwall is provided with many fins.
Technical problem of the present invention is also realized by following scheme:
Described cylindric electronic refrigerating elements can be integral barrel structure, also can be combined into cylinder by two semicircular structures; Described cylindrical shape airflow radiating device connects into double-layered cylinder structure by inside and outside two cylinders, retains certain intervals between inner/outer tube; Inner tube wall has many with the aperture of barrel in the angle that is inclined upwardly, radiator fan is equipped with in outer tube wall side, communicates between windthroat with inner/outer tube, and radiator can dissipate by electronic refrigerating elements outer surface liberated heat; Many fins that described condenser pipe inwall is arranged are circular, and form downward inclination angle with tube wall, to increase the film-cooled heat in condenser pipe, improve cooling effectiveness.The temperature difference of the cold and hot end of usual electronic refrigerating elements can reach between 40 ~ 65 degree, if reduce hot-side temperature by the mode of active heat removal, that cold junction temperature also can decline accordingly, thus reaches lower temperature.
When carrying out distillation work, connect radiator fan and electronic refrigerating elements dc source, electronic refrigerating elements inner surface absorbs heat becomes cold junction temperature reduction, conducts simultaneously and in condenser pipe, its temperature is reduced, and outer surface releases heat becomes hot-side temperature rising; Meanwhile, air-flow is imported tubular airflow radiating device by radiator fan, and electronic refrigerating elements outer surface liberated heat is derived by many apertures of heat sink inner surface by air-flow; Because the aperture of heat sink inner surface is in inclination angle upwards, make the air-flow formed between heat sink inner surface and electronic refrigerating elements outer surface from bottom to top, lower end so just between heat sink inner surface and electronic refrigerating elements outer surface produces negative pressure, air-flow can be made again constantly to suck, strengthen radiating effect.In still-process, be distilled material to be heated in distilling flask, the heat steam produced enters and is produced condensation by the condenser pipe of electronics condensation and tube wall and fin contacts, the heat in hot junction is constantly derived by radiator, make electronic refrigerating elements cold junction continue to keep low-temperature condition, the cut be condensed constantly distillates in receiving bottle; Because condensation temperature is lower, condensation efficiency is improved; Pass through the adjustment to input current of electronic refrigerating elements in electronic condenser according to the condensation temperature of cut in system, the control of high-precision condensing temperature can be realized.
The beneficial effect that the present invention brings is:
1. achieve no-cooling-water condensation, save a large amount of clean tap water.
2. decrease and rely on the great number of circulation cooling device cooling to drop into.
3. achieve than running water cooling, without the lower condensation temperature of kind of refrigeration cycle wetting system cooling.
4. overcome the situation needing interrupt experiments when running water cooling is cut off the water, ensured that experiment is carried out smoothly.
5. to compare with without the circulation cooling device freezed with having to freeze, do not have larger mechanical rotation part, without the need to cold-producing medium, noiseless, pollution-free, reliability is high, and the life-span is long, installs easily.
6., by the adjustment to electronic condenser electric current, the control of high-precision condensing temperature can be realized.
7. owing to making, condenser pipe is outside and environment temperature is isolated, condenser pipe film-cooled heat increases, and condensation efficiency is improved.
8. easy to use, structure is simple, and easy processing and manufacturing, is easy to penetration and promotion, is significant to environmental protection using water wisely.
Accompanying drawing explanation
Fig. 1 is plate electronic refrigerating elements structure and working principle schematic diagram.
Fig. 2 is cylindrical shape electronic refrigerating elements structure and working principle schematic diagram.
Fig. 3 is temperature controllable electronics condensation Rotary Evaporators structural representation.
Fig. 4 is two semicircle electronic refrigerating elements structural representations.
Fig. 5 is finned condensation pipe structural representation.
Fig. 6 is barrel radiator structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
As shown in Figure 1 and Figure 2,1-1,2-1 are insulating ceramics to electronic refrigerating elements structure and working principle, and 1-2,2-2 are metallic conductor, and 1-3,2-3 are N-type and P-type semiconductor, and 1-4,2-4 are dc source.After dc source is passed into electronic refrigerating elements, energy-producing transfer at once, the joint that electric current flows to P type element by N-type element absorbs heat, and 1-A, 2-A face becomes cold junction temperature and reduces; Flowed to the joint release heat of N-type element by P type element, 1-B, 2-B face becomes hot-side temperature and raises.The temperature difference of the cold and hot end of usual electronic refrigerating elements can reach between 40 ~ 65 degree, if reduce hot-side temperature by the mode of active heat removal, that cold junction temperature also can decline accordingly, thus reaches lower temperature.
Temperature controllable electronics condensation Rotary Evaporators structure of the present invention, semicircle electronic refrigerating elements structure, finned condensation pipe structure, barrel radiator structure are as shown in 3 figure, Fig. 4, Fig. 5, Fig. 6, the cylindrical structure of electronic refrigerating elements 3-1 wherein, condenser pipe 3-3 inserts in columnar electronic refrigerating elements, electronic refrigerating elements inner surface 3-1-A and condenser pipe outer surface contact with each other, during electronic refrigerating elements work, cylinder inner surface 3-1-A absorbs thermal temperature reduction, and cylinder outer surface 3-1-B releases thermal temperature and raises; Airflow radiating device 3-2 also cylindrical structure wherein, be enclosed within electronic refrigerating elements 3-1 outside, leave certain intervals between the inner/outer tube of airflow radiating device, radiator fan 3-2-1 is equipped with in outer tube wall side, and windthroat communicates with cylinder inside; Inner tube wall having many is the aperture 3-2-2 at certain angle of inclination with barrel, and leave certain space 3-4 between airflow radiating device and electronic refrigerating elements, the air-flow that aperture is flowed out can pass therethrough.The fin 3-3-1 that condenser pipe 3-3 inwall is arranged increases the film-cooled heat in condenser pipe, to improve condensation efficiency.
When carrying out distillation work, connect radiator fan 3-2-1 and electronic refrigerating elements 3-1 dc source, electronic condenser is started working, electronic refrigerating elements inner surface 3-1-A absorbs heat becomes cold junction temperature reduction, conduct simultaneously and in condenser pipe 3-3, its temperature is reduced, outer surface 3-1-B releases heat becomes hot-side temperature rising; Meanwhile, air-flow 3-5 imports in tubular airflow radiating device 3-2 by radiator fan 3-2-1, and air-flow is flowed out by many aperture 3-2-2 of heat sink inner surface, is derived by electronic refrigerating elements outer surface 3-1-B liberated heat; Because the aperture of heat sink inner surface is in inclination angle upwards, make the air-flow 3-6 formed between heat sink inner surface and electronic refrigerating elements outer surface from bottom to top, lower end spaces meanwhile between radiator and electronic refrigerating elements produces negative pressure, air-flow 3-7 can be made again constantly to suck, enhance radiating effect.In still-process, be distilled material to be heated in distilling flask 3-8, the heat steam produced enters to be contacted with tube wall and fin 3-3-1 by the condenser pipe of electronics condensation and produces condensation, the heat in hot junction is constantly derived by radiator, make electronic refrigerating elements cold junction continue to keep low-temperature condition, the cut be condensed constantly distillates in receiving bottle 3-9.Because condensation temperature is lower, condensation efficiency is improved; Alternative water cooled condenser, achieves the condensation of no-cooling-water; Pass through the adjustment to electronic condenser electric current according to the condensation temperature of cut, the control of high-precision condensing temperature can be realized; Environmental protection and using water wisely are significant.
Claims (4)
1. a temperature controllable electronics condensation Rotary Evaporators, mainly comprises distilling flask, thermostat water bath, drawdown pump, receiving bottle, electronic condenser; It is characterized in that: described electronic condenser is made up of electronic refrigerating elements, airflow radiating device, condenser pipe; Described electronic refrigerating elements cylindrically structure, condenser pipe can be inserted in cylindrical shape electronic refrigerating elements, and electronic refrigerating elements inner surface and condenser pipe outer surface contact with each other; Described airflow radiating device cylindrically structure, cylindrical shape electronic refrigerating elements can be inserted in cylindrical shape airflow radiating device, retains certain intervals between cylindrical shape airflow radiating device inner surface and cylindrical shape electronic refrigerating elements outer surface; Described condenser pipe inwall is provided with many fins.
2. a kind of temperature controllable electronics condensation Rotary Evaporators according to claim 1, is characterized in that: described cylindric electronic refrigerating elements can be integral barrel structure, also can be combined into cylinder by two semicircular structures.
3. a kind of temperature controllable electronics condensation Rotary Evaporators according to claim 1, is characterized in that: described cylindrical shape airflow radiating device connects into double-layered cylinder structure by inside and outside two cylinders, retains certain intervals between inner/outer tube; Inner tube wall have many with the aperture of barrel in the angle that is inclined upwardly; Radiator fan is equipped with in outer tube wall side, communicates between windthroat with inner/outer tube.
4. a kind of temperature controllable electronics condensation Rotary Evaporators according to claim 1, is characterized in that: many fins that described condenser pipe inwall is arranged are circular, and form downward inclination angle with tube wall.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510375516.9A CN104922924A (en) | 2015-06-24 | 2015-06-24 | Temperature controllable electronic condensation rotary evaporator |
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| CN201510375516.9A CN104922924A (en) | 2015-06-24 | 2015-06-24 | Temperature controllable electronic condensation rotary evaporator |
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| CN104922924A true CN104922924A (en) | 2015-09-23 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322818A (en) * | 2016-09-13 | 2017-01-11 | 奈申（上海）智能科技有限公司 | Rotation-type electrocaloric refrigeration device |
| CN108619908A (en) * | 2018-07-18 | 2018-10-09 | 中国工程物理研究院核物理与化学研究所 | A kind of horizontal dual temperature area I-131 destructive distillation devices |
| CN111603795A (en) * | 2020-07-09 | 2020-09-01 | 苏州北开生化设备有限公司 | Efficient rotary evaporation device and working method thereof |
| CN111705870A (en) * | 2020-06-11 | 2020-09-25 | 常州大学 | High-efficiency air water taking device |
| CN111839251A (en) * | 2020-07-13 | 2020-10-30 | 广东美的厨房电器制造有限公司 | Condensing device of cooking equipment and cooking equipment |
| CN115971129A (en) * | 2022-12-15 | 2023-04-18 | 新凤鸣集团湖州中石科技有限公司 | Disassembly-and-assembly-free cleaning equipment for rotary guide frame of winding machine |
-
2015
- 2015-06-24 CN CN201510375516.9A patent/CN104922924A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322818A (en) * | 2016-09-13 | 2017-01-11 | 奈申（上海）智能科技有限公司 | Rotation-type electrocaloric refrigeration device |
| CN108619908A (en) * | 2018-07-18 | 2018-10-09 | 中国工程物理研究院核物理与化学研究所 | A kind of horizontal dual temperature area I-131 destructive distillation devices |
| CN108619908B (en) * | 2018-07-18 | 2023-05-26 | 中国工程物理研究院核物理与化学研究所 | Horizontal double-temperature-zone I-131 dry distillation device |
| CN111705870A (en) * | 2020-06-11 | 2020-09-25 | 常州大学 | High-efficiency air water taking device |
| CN111705870B (en) * | 2020-06-11 | 2021-05-25 | 常州大学 | Air water taking device |
| CN111603795A (en) * | 2020-07-09 | 2020-09-01 | 苏州北开生化设备有限公司 | Efficient rotary evaporation device and working method thereof |
| CN111839251A (en) * | 2020-07-13 | 2020-10-30 | 广东美的厨房电器制造有限公司 | Condensing device of cooking equipment and cooking equipment |
| CN111839251B (en) * | 2020-07-13 | 2022-04-29 | 广东美的厨房电器制造有限公司 | Condensing device of cooking equipment and cooking equipment |
| CN115971129A (en) * | 2022-12-15 | 2023-04-18 | 新凤鸣集团湖州中石科技有限公司 | Disassembly-and-assembly-free cleaning equipment for rotary guide frame of winding machine |
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Application publication date: 20150923 |
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