CN101307941A - Device for continuously preparing low dew point low temperature drying air - Google Patents
Device for continuously preparing low dew point low temperature drying air Download PDFInfo
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- CN101307941A CN101307941A CNA2008100189338A CN200810018933A CN101307941A CN 101307941 A CN101307941 A CN 101307941A CN A2008100189338 A CNA2008100189338 A CN A2008100189338A CN 200810018933 A CN200810018933 A CN 200810018933A CN 101307941 A CN101307941 A CN 101307941A
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Abstract
The invention relates to a device for continuously preparing low-temperature dry air with low dew point, mainly comprising the parts as follows: an initial effect air filter, an induced device, a first-level surface refrigerant cooler, a turning wheel dehumidifier, a first-level cryogenic refrigerant cooler, a second-level cryogenic refrigerant cooler and a box body. An end part of the box body is provided with a gas inlet, a tail part of the box body is provided with a gas outlet, the inside of the box body is orderly provided with the initial effect air filter, the induced device, the first-level surface refrigerant cooler, the turning wheel dehumidifier, the first-level cryogenic refrigerant cooler and the second-level cryogenic refrigerant cooler from the end part to the tail part; and the initial effect air filter, the induced device, the first-level surface refrigerant cooler, the turning wheel dehumidifier, the first-level cryogenic refrigerant cooler and the second-level cryogenic refrigerant cooler are orderly connected in series through an air flue. The turning wheel dehumidifier of the device consists of a turning wheel and an air regeneration device; and the device can continuously prepare dry air with absolute water content 0.0003g/kg and the dew point between 80 and 90 DEG C below zero.
Description
Technical field
The utility model relates to a kind of pharmacy, food, biogenetic products etc. of being applicable to and needs the low temperature and low humidity air to come quick-frozen and keep the preparation facilities of low dew point low temperature drying air of the quality of article, particularly a kind of continuous preparation device of low dew point low temperature drying air.
Background technology
At present, the main method that adopts is directly to utilize liquid nitrogen or liquid CO 2, utilize the device for cooling that changes of above-mentioned two kinds of cryogens to obtain in the technical field of the low dew point of preparation, low temperature dry air.But when directly utilizing liquid nitrogen or liquid CO 2, it is constant that the temperature of gas is difficult to, and simultaneously because can't circulating and recovering, makes the wasting of resources of above-mentioned two kinds of fluids, increased the cost of applying unit greatly.If utilize above-mentioned fluid to carry out the gas that cold exchange obtains the low dew point of low temperature, high but the cool exchanger of liquid nitrogen is made requirement, and, directly influence the refrigeration and the subsequent technique of air because air does not have the preliminary treatment dehumidifying to cause the cold-exchange surface icing.Therefore, preparation method that the utility model relates to and device have simple and reliable for structure, and cost of equipment maintenance is low, move continuously and the characteristics of economical rationality.
Application number is to have related to a kind of constant temperature and humidity air-treatment unit in 200420002547.7 the patent application, wherein air be by successively and chilled water coil pipe and refrigerant evaporator coil pipe carry out the purpose that heat exchange reaches cool-down dehumidification, this making by heat exchange can make moisture can't obtain the air of low dew point and low temperature surperficial the freezing of refrigerant evaporator owing to cross low temperature by the dehumidification mode of condensate moisture.
Application number is to have related to the box-like air conditioner technology of a kind of dedicated set in 200520067391.5 the patent application, rotary wheel dehumidifying technology and refrigeration-type surface-cooler have been adopted, but its refrigeration and dehumidifying degree can only reach the requirement of general air-conditioning, for requiring dew point below-80 ℃, temperature is below-65 ℃, and said apparatus can't be realized at all.
Application number is that 200620134197.9 patent application has related to a kind of band circulatory function dehumidification type air processor, and still, it carries out at air-conditioning mechanism equally, so can't realize the real low dew point and the preparation of cryogenic gas.
Summary of the invention
Be difficult to constant shortcoming at production cost height in the prior art, the gas that can not effectively obtain the low dew point of low temperature, the gas temperature of preparation, the utility model provide a kind of simple to operate, operation continuously, the continuous preparation device of the controlled low dew point low temperature drying air of final gas temperature.
A kind of device that is used for preparing continuously low dew point low temperature drying air, mainly by forming: just imitate air cleaner with the lower part, blower unit, one-level refrigerant surface cooler, rotary dehumidifier, one-level deep cooling refrigerant cooler, secondary deep cooling refrigerant cooler, casing, end at casing is provided with gas feed, afterbody at casing is provided with gas vent, in casing, be provided with effect air cleaner just successively by end to afterbody, blower unit, one-level refrigerant surface cooler, rotary dehumidifier, one-level deep cooling refrigerant cooler, secondary deep cooling refrigerant cooler, the described air cleaner of just imitating, blower unit, one-level refrigerant surface cooler, rotary dehumidifier, one-level deep cooling refrigerant cooler, secondary deep cooling refrigerant cooler is connected successively by the air channel.
Rotary dehumidifier in the continuous preparation device of described low dew point low temperature drying air is made up of runner and air regeneration unit, described runner radially is divided into the dehumidifying district by the center of circle, renewing zone and remove the district again, be respectively equipped with dividing plate between three subregions, the one side near one-level deep cooling refrigerant cooler at runner is provided with regenerated air heater, the left side of regenerated air heater is provided with the regeneration air roughing efficiency air filter, regenerated air heater and regeneration air roughing efficiency air filter are connected by the air channel, another side at runner is provided with the regeneration air blower fan, regeneration air directly is taken from environment, and be heated to 60 ℃～80 ℃ through regeneration air roughing efficiency air filter and regenerated air heater, the renewing zone that is used for runner, pass runner after gas flow back to environment through the regeneration air blower fan.The gas that removes the district again is taken from through the dry air after the dehumidification treatments, and deacration only accounts for the sub-fraction except that humid gas again, and gets back in the main gas through the gas that removes after distinguishing again.Three by stages have dividing plate respectively, and having guaranteed respectively to distinguish corresponding air-flow can flow according to corresponding requirement, satisfies the function corresponding requirement.
Gas outlet end at casing in the continuous preparation device of described low dew point low temperature drying air also is provided with heater.Between rotary dehumidifier and one-level deep cooling refrigerant cooler, be provided with dew point monitor.Gas outlet at casing is provided with temperature monitoring.For satisfy medicine or food service industry aseptic requirement, can also in the gas outlet of casing is set up, imitate and high efficiency particulate air filter.
Compared with prior art, the utlity model has following advantage:
1, the air of equipment preparation of the present utility model is drier, dew point is lower, dehumidification process is to adopt two stage dehumidify in the utility model, promptly further dehumidified by the rotary dehumidifier that enters the design of three districts behind the one-level refrigerant surface cooler cooling and dehumidifying more before this, guaranteed that whole dehumidification process finishes at short notice, simultaneously can obtain good dehumidification effect, can reach absolute water content is 0.0003g water/kg dry air, and dew point reaches-80 ℃～-90 ℃.
2, the air themperature of the utility model preparation is lower, and steam can not appear because temperature is crossed low in the phenomenon of heat exchanger surface condensation, because air has passed through the dehumidifying of the rotary dehumidifier that designs through three districts behind the one-level refrigerant surface cooler earlier, rotary dehumidifier will dehumidify and regenerate by three districts, the mode of removing again combines, solved the continuous dehumidifying effect problem of runner, guaranteed the acquisition of low dew point gas, on the evaporating heat exchanger of refrigerant, freeze easily when having solved the gas deep cooling and influence the problem of refrigeration, pass through the refrigerant cooler of the two-stage deep cooling of series connection again, just can cool air to-65 ℃～-70 ℃, therefore, for medicine, it is very suitable that the quality of food and biogenetic products etc. keeps required low temperature to hang down the dew point environment.
3, the last gas temperature of the utility model is controlled, owing to be provided with heater in the exit, can the temperature that last gas is heated to needs be used for subsequent processing according to production requirement.
4, preparation method's production cost of the present utility model is low, easy and simple to handle, owing to do not need to cool off with liquid nitrogen or liquid CO 2, adopted routine operation, reduced the past widely to obtaining the low required requirement of great number equipment making, support expense and the cryogen expense of dew point gas of low temperature, greatly reduce production cost, simplified production technology, saved the energy simultaneously.
5, the gas of the utility model production can satisfy the aseptic requirement of few bacterium, because device of the present utility model is provided with the air roughing efficiency air filter in gas feed, in the exit of native system can also be provided with, imitate and High-Performance Gas Filter, reach and satisfy the few bacterium or the aseptic requirement of medicine, food and biogenetic products etc.
Description of drawings
Fig. 1 is a process flow diagram of the present utility model.
Fig. 2 is the runner schematic diagram of the utility model three districts design.
Fig. 3 is the rotary wheel regeneration air wind path schematic diagram of the utility model three districts design.
The specific embodiment
Below in conjunction with Fig. 1, Fig. 2 and Fig. 3, the utility model is elaborated:
Embodiment 1
A kind of continuous preparation device of low dew point low temperature drying air, mainly by forming: just imitate air cleaner 1 with the lower part, blower unit 2, one-level refrigerant surface cooler 3, rotary dehumidifier 4, one-level deep cooling refrigerant cooler 5, secondary deep cooling refrigerant cooler 6, casing, end at casing is provided with gas feed, afterbody at casing is provided with gas vent, in casing, be provided with effect air cleaner 1 just successively by end to afterbody, blower unit 2, one-level refrigerant surface cooler 3, rotary dehumidifier 4, one-level deep cooling refrigerant cooler 5, secondary deep cooling refrigerant cooler 6, the described air cleaner 1 of just imitating, blower unit 2, one-level refrigerant surface cooler 3, rotary dehumidifier 4, one-level deep cooling refrigerant cooler 5, secondary deep cooling refrigerant cooler 6 is connected successively by the air channel.The surrounding air of normal temperature enters one-level refrigerant surface cooler 3 by blower unit 2 suctions through roughing efficiency air filter 1, at this, gas is cooled, airborne moisture is dewfall on the evaporimeter of one-level refrigerant surface cooler 3, airborne portion of water is removed, air after the preliminary dehumidifying passes through the residual moisture in rotary dehumidifier 4 absorbed airs again, and this step obtains the dry air of absolute water content smaller or equal to 0.0003g water/kg after finishing, and its actual dew point arrives-80 ℃～-90 ℃.Enter one-level deep cooling refrigerant cooler 5 through the air after twice dehumidifying and carry out heat exchange, cooled off once more at this air, reach-35 ℃～-40 ℃, air enters secondary deep cooling refrigerant cooler 6 subsequently again and carries out heat exchange, be cooled to-65 ℃～-70 ℃, last heater via 7 is supplied next operation after being adjusted to proper temperature.
In order to control the temperature of gas, can also be provided with heater 7 at the gas outlet end of the casing of whole device, heater 7 can adopt electrical heating or remaining heating element heater.Between rotary dehumidifier 4 and one-level deep cooling refrigerant cooler 5, can be provided with dew point monitor 8, the temperature of the air after monitoring dehumidifies through rotary dehumidifier, dew point detector 8 can adopt the VAISALA dew point hygrometer, and model is DNT142C3.Gas outlet at casing is provided with temperature monitoring 9, can better monitor the temperature of exit gas, guarantees to reach the temperature requirement of subsequent processing, and temperature monitoring can adopt the temperature sensor of PT-100 and the DC-1020C digital display of Honeywell.Though the place is provided with roughing efficiency air filter 1 in the gas access, can tentatively filter surrounding air, but sometimes for the few bacterium that reaches medicine or food service industry or aseptic requirement, in the gas outlet of casing can also be provided with, imitate and high efficiency particulate air filter, last air is further filtered.
Here description of the present utility model and application are illustrative, are not to want with scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the actual replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present utility model or substantive characteristics, and the utility model can be with other forms, structure, layout, ratio, and realize with other elements, material and parts.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change here to disclosed embodiment.
Claims (6)
1, a kind of device that is used for preparing continuously low dew point low temperature drying air, it is characterized in that mainly by forming: just imitate air cleaner (1) with the lower part, blower unit (2), one-level refrigerant surface cooler (3), rotary dehumidifier (4), one-level deep cooling refrigerant cooler (5), secondary deep cooling refrigerant cooler (6), casing, end at casing is provided with gas feed, afterbody at casing (10) is provided with gas vent, in casing, be provided with effect air cleaner (1) just successively by end to afterbody, blower unit (2), one-level refrigerant surface cooler (3), rotary dehumidifier (4), one-level deep cooling refrigerant cooler (5), secondary deep cooling refrigerant cooler (6), the described air cleaner (1) of just imitating, blower unit (2), one-level refrigerant surface cooler (3), rotary dehumidifier (4), one-level deep cooling refrigerant cooler (5), secondary deep cooling refrigerant cooler (6) is connected by the air channel successively.
2, the device of continuous preparation low dew point low temperature drying air according to claim 1, it is characterized in that described rotary dehumidifier (4) is made up of runner and air regeneration unit, described runner radially is divided into dehumidifying district (41) by the center of circle, renewing zone (42) and remove district (43) again, three by stages are respectively equipped with dividing plate, the one side near one-level deep cooling refrigerant cooler (5) at runner is provided with regenerated air heater (45), the left side of regenerated air heater (45) is provided with regeneration air roughing efficiency air filter (44), regeneration air roughing efficiency air filter (44) is by air channel and regenerated air heater (45) series connection, another side at runner is provided with regeneration air blower fan (46), regeneration air directly is taken from environment, and be heated to 60 ℃～80 ℃ through regeneration air roughing efficiency air filter (44) and regenerated air heater (45), the renewing zone that is used for runner, gas flows back to environment through regeneration air blower fan (46) after passing runner, the gas that removes district (43) again is taken from through the dry air after the dehumidification treatments, gets back in the main gas through behind the rotary dehumidifier.
3, the continuous preparation device of low dew point low temperature drying air according to claim 1 is characterized in that also being provided with heater (7) at the gas outlet end of casing.
4, the device of continuous preparation low dew point low temperature drying air according to claim 1 is characterized in that being provided with dew point monitor (8) between rotary dehumidifier (4) and one-level deep cooling refrigerant cooler (5).
5, the continuous preparation device of low dew point low temperature drying air according to claim 1 is characterized in that being provided with temperature monitoring (9) at the gas outlet of casing.
6, the continuous preparation device of low dew point low temperature drying air according to claim 1 is characterized in that imitating and high efficiency particulate air filter in the gas outlet of casing is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100189338A CN101307941A (en) | 2008-02-01 | 2008-02-01 | Device for continuously preparing low dew point low temperature drying air |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100189338A CN101307941A (en) | 2008-02-01 | 2008-02-01 | Device for continuously preparing low dew point low temperature drying air |
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| CN101307941A true CN101307941A (en) | 2008-11-19 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936021A (en) * | 2010-08-21 | 2011-01-05 | 马军 | Method and device for getting water from dry air |
| CN102287883A (en) * | 2011-07-22 | 2011-12-21 | 集美大学 | Improved structure for marine rotating-wheel dehumidifying air-conditioning system and operating method thereof |
| CN102586524A (en) * | 2012-03-23 | 2012-07-18 | 中冶南方工程技术有限公司 | Blast rotary-wheel dehumidification device for blast furnace |
| CN103453621A (en) * | 2013-08-22 | 2013-12-18 | 苏州康华净化系统工程有限公司 | Automatic temperature-controlled rotary wheel type dehumidifier |
| CN103673113A (en) * | 2013-12-19 | 2014-03-26 | 南京航空航天大学 | Double-grade regenerating rotary-wheel dehumidification system and air processing method thereof |
| CN104390318B (en) * | 2014-09-30 | 2017-01-11 | 杭州悦居环境设备有限公司 | Constant temperature, humidity and oxygen air-conditioning system |
| CN107774063A (en) * | 2016-08-31 | 2018-03-09 | 杜富德 | Renewable circulating liquid formula air cleaning unit and purification method |
| CN112984671A (en) * | 2021-04-28 | 2021-06-18 | 浙江上风高科专风实业股份有限公司 | Ultralow dew point air supply unit for nuclear power station |
-
2008
- 2008-02-01 CN CNA2008100189338A patent/CN101307941A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936021A (en) * | 2010-08-21 | 2011-01-05 | 马军 | Method and device for getting water from dry air |
| CN102287883A (en) * | 2011-07-22 | 2011-12-21 | 集美大学 | Improved structure for marine rotating-wheel dehumidifying air-conditioning system and operating method thereof |
| CN102586524A (en) * | 2012-03-23 | 2012-07-18 | 中冶南方工程技术有限公司 | Blast rotary-wheel dehumidification device for blast furnace |
| CN103453621A (en) * | 2013-08-22 | 2013-12-18 | 苏州康华净化系统工程有限公司 | Automatic temperature-controlled rotary wheel type dehumidifier |
| CN103673113A (en) * | 2013-12-19 | 2014-03-26 | 南京航空航天大学 | Double-grade regenerating rotary-wheel dehumidification system and air processing method thereof |
| CN104390318B (en) * | 2014-09-30 | 2017-01-11 | 杭州悦居环境设备有限公司 | Constant temperature, humidity and oxygen air-conditioning system |
| CN107774063A (en) * | 2016-08-31 | 2018-03-09 | 杜富德 | Renewable circulating liquid formula air cleaning unit and purification method |
| CN112984671A (en) * | 2021-04-28 | 2021-06-18 | 浙江上风高科专风实业股份有限公司 | Ultralow dew point air supply unit for nuclear power station |
| CN112984671B (en) * | 2021-04-28 | 2023-01-03 | 浙江上风高科专风实业股份有限公司 | Ultralow dew point air supply unit for nuclear power station |
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Open date: 20081119 |