CN107289742A - A kind of tiny structure low temperature drying device and its drying process - Google Patents
A kind of tiny structure low temperature drying device and its drying process Download PDFInfo
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- CN107289742A CN107289742A CN201710531694.5A CN201710531694A CN107289742A CN 107289742 A CN107289742 A CN 107289742A CN 201710531694 A CN201710531694 A CN 201710531694A CN 107289742 A CN107289742 A CN 107289742A
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- low temperature
- hothouse
- drying
- circulating current
- source pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of tiny structure low temperature drying device and its drying process, the device introduces tiny structure environment in hothouse, rapid draing can be carried out to material at a lower temperature, drying process applies circulating current drying means, using the evaporator of source pump to the first cool-down dehumidification of circulating current, then low temperature saturated air stream is further dehumidified using independent humidity control machine, then air-flow is heated up using the condenser of source pump and introduces negative pressure drying room, the regeneration of dehumidifier can apply a variety of clean and effective energy in the technique, such as solar energy, geothermal energy, industrial exhaust heat etc., the condensation of heat pump has obtained reasonable utilization simultaneously with heat of evaporation, volume drying energy consumption is far below common drying device, its rate of drying and drying effect are excellent, it is especially suitable for Chinese herbal medicine, health products, seed, high-grade agricultural product, seafood products etc. are extremely sensitive to drying temperature and can not break the material of its active ingredient of ring.
Description
Technical field
The present invention relates to a kind of tiny structure low temperature drying device and its drying process, the device introduces micro- negative in hothouse
Pressure ring border, can be at a lower temperature（30~50℃）Material is rapidly and efficiently dried, Chinese herbal medicine, health products, height is especially suitable for
The materials extremely sensitive to drying temperature and can not breaking its active ingredient of ring such as shelves agricultural product, the technical method, which belongs to after raw material, to be located
Reason and energy-conserving and environment-protective field.
Background technology
Dry technology is obtained in industries such as chemical industry, pharmacy, food, biology, material, agricultural byproducts processing, coal and timber processing
To extensive use.And the most frequently used drying means is hot-air convection drying, higher temperature after typically application is heated at ambient pressure
Hot-air flow through the method that moisture is taken away on material to be dried surface with this, and need to consume big when this method heating air
Energy, dry efficiency is low, and has the heat sensitive material of high added value because too high temperature is not suitable for some, such as：Medium-height grass
Medicine, health products, seed, high-grade agricultural product, seafood products etc..Therefore, it is necessary to design a kind of additional specifically designed for these height
The heat sensitive material of value carries out the device and drying process of highly effective drying, it is ensured that can either realize low energy consumption, can not damage again
Drying efficiency is improved while material active ingredient.
The content of the invention
The present invention is in order to solve high energy consumption when the heat sensitive material of high added value is dried conventional heated air, drying
Process has the low problem of damage, drying efficiency to material, and there is provided a kind of tiny structure low temperature drying device and its drying process.
In order to solve the above-mentioned technical problem, the present invention proposes following technical scheme：A kind of tiny structure low temperature drying device, it
Including hothouse, the hothouse is internally provided with basin, and the bottom of the hothouse is communicated with source pump internal condensation
Device, the source pump internal condensation device simultaneously with source pump inner compressor, source pump inner evaporator and gas panel
Formula heat exchanger is connected；The top of the hothouse is connected by circulating fan with gas plate type heat exchanger；In the source pump
Dehumidifier is also equipped between portion's evaporator and gas plate type heat exchanger；Between the source pump internal condensation device and hothouse
Pipeline on airduct regulating valve and pressure vacuum meter are installed；Evaporated inside the source pump internal condensation device and source pump
Source pump internal restriction expansion valve is installed on the pipeline between device.
The pressure vacuum meter can detect hothouse internal negative pressure numerical value.
The source pump can be using common electric drive heat pump unit, also can be hot using the suction-type lithium bromide of Driven by Solar Energy
Pump assembly.
The dehumidifier can use rotary dehumidifier or solution dehumidifier.
The pressure that the airduct regulating valve can adjust in hothouse makes it operationally be in tiny structure.
The regeneration of the dehumidifier can apply a variety of clean and effective energy, such as solar energy, geothermal energy, industrial exhaust heat.
The operation drying temperature of the drying device is 30 ~ 50 DEG C.
The gas plate type heat exchanger can preheat the circulating current after two grades are dehumidified, and simultaneously to the hothouse
The hot wet circulating current of discharge carries out precooling.
The drying process of any one tiny structure low temperature drying device comprises the following steps：
Step1：Low temperature and low humidity circulating current enters the rapid moisture absorption of the hothouse, uniform drying and is arranged on each layer basin
Material to be dried；
Step2：It is changed into low temperature and high relative humidity circulating current after circulating current hygroscopic desiccation material, and in the circulating fan swabbing action
Under leave hothouse, into the gas plate type heat exchanger in carry out heat exchange with the circulating current after the dehumidifying of two grades of back segment, it is real
Now leave the precooling of the low temperature and high relative humidity circulating current of hothouse；
Step3：Circulating current after precooling leaves the gas plate type heat exchanger into source pump inner evaporator, is steaming
Heat release, which significantly cools and condensed, in hair device separates out moisture in air-flow, as one-level dehumidifying Posterior circle air-flow, is then departed from evaporator
Into the dehumidifier；
Step4：Circulating current after one-level dehumidifying is dehumidified in dehumidifier by further depth, removes vapor therein and is formed
The extremely low cold dry gas stream of humidity be two grades dehumidifying after circulating current, subsequently into gas plate type heat exchanger described in Step2 with
The low temperature and high relative humidity circulating current for leaving hothouse carries out heat exchange, realizes the preheating of the circulating current after two grades of dehumidifying；
Step5：Circulating current after two grades of dehumidifying passes through Step4 preheating, subsequently into the source pump internal condensation device
In be further thermally formed required low temperature and low humidity circulating current, the drying is returned after the regulation for eventually passing airduct regulating valve
Room, enters the low temperature and low humidity circulating air flow of hothouse using airduct regulation valve regulation here according to the numerical value of pressure vacuum meter,
The airduct regulating valve makes to form the tiny structure value for being best suitable for material to be dried in hothouse, thereafter returns to Step1, and so on
The tiny structure low temperature drying to material is realized in circulation.
Using tiny structure low temperature drying device and its drying process, for high added value and also to drying temperature extremely
Material progress highly effective drying sensitive and that its active ingredient of ring can not be broken.
Using tiny structure low temperature drying device and its drying process, for Chinese herbal medicine, health products, seed, high-grade agricultural production
Product and seafood products carry out highly effective drying.
The method have the advantages that：
1st, a kind of tiny structure low temperature drying device, makes material carry out rapid draing dehydration under the conditions of low temperature and tiny structure, does
Drying process applies circulating current drying means, using the evaporator of source pump circulating current is first cooled one-level dehumidifying, connect
Using the two grades of dehumidifying further to low temperature saturated air stream of independent humidity control machine, then two grades are removed using the condenser of source pump
Air-flow relative humidity can be reduced to less than 5% and introduce tiny structure hothouse by wet gas current heating.
2nd, the regeneration of dehumidifier can apply a variety of clean and effective energy, such as solar energy, geothermal energy, industrial exhaust heat in the technique
Condensation Deng, heat pump with heat of evaporation has obtained reasonable utilization simultaneously, and volume drying energy consumption is far below common drying device, and it is dried
Speed and drying effect are excellent, are especially suitable for Chinese herbal medicine, health products, seed, high-grade agricultural product, seafood products etc. to drying temperature
Material extremely sensitive and that its active ingredient of ring can not be broken.
3rd, reduce, can make to a certain extent because the vapourizing temperature for using moisture in tiny structure dry environment, material is obtained
Drying temperature is reduced under conditions of rate of drying change less, that is, realizes that the low temperature for meeting the lossless drying condition of specific material is done
Dry, the heating energy consumption so for dry gas stream can be reduced effectively.
4th, the precooling of the high humidity circulating current of hothouse outlet is realized in drying process while without external energy
With the preheating of the circulating current after two grades of dehumidifying, operation energy consumption is so reduce further, dry system is substantially increased on the whole
The efficiency of system.
5th, the operation drying temperature of the drying device is generally 30 ~ 50 DEG C, and the device is not limited to 30 ~ 50 DEG C of drying
Temperature, can also change operational factor using other drying temperatures.
6th, gas plate type heat exchanger can be to the hothouse while circulating current after two grades are dehumidified for preheating
The high humidity circulating current of discharge carries out precooling, improves overall operational energy efficiency.
7th, the pressure that the airduct regulating valve can adjust in hothouse makes it operationally be in appropriate tiny structure, improves
Temperature needed for the speed that material to be dried reclaimed water is analyzed, effectively reduction are dried.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is overall structure diagram of the present invention.
In figure：1-source pump inner compressor, 2-source pump internal condensation device, 3-airduct regulating valve, 4-dry
Dry room, 5-circulating fan, 6-gas plate type heat exchanger, 7-dehumidifier, 8-source pump inner evaporator, 9-heat pump machine
Group internal restriction expansion valve, 10-basin, 11-pressure vacuum meter.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in figure 1, a kind of tiny structure low temperature drying device, it includes hothouse 4, and the hothouse 4 is internally provided with drying
Disk 10, the bottom of the hothouse 4 is communicated with source pump internal condensation device 2, the source pump internal condensation device 2 simultaneously with
Source pump inner compressor 1, source pump inner evaporator 8 are connected with gas plate type heat exchanger 6；The top of the hothouse 4
Portion is connected by circulating fan 5 with gas plate type heat exchanger 6；The source pump inner evaporator 8 and gas plate type heat exchanger 6
Between be also equipped with dehumidifier 7；Airduct tune is installed on the pipeline between the source pump internal condensation device 2 and hothouse 4
Save valve 3 and pressure vacuum meter 11；On pipeline between the source pump internal condensation device 2 and source pump inner evaporator 8
Source pump internal restriction expansion valve 9 is installed.
Further, the pressure vacuum meter 11 can detect the internal negative pressure numerical value of hothouse 4.The numerical value of tiny structure can spirit
Regulation living, and can be read by pressure vacuum meter.
Further, the source pump can also use the bromination of Driven by Solar Energy using common electric drive heat pump unit
Lithium-absorbing formula source pump.
Further, the dehumidifier 7 can use rotary dehumidifier or solution dehumidifier.Can be to following by dehumidifier 7
Annular space gas is dehumidified, and then obtains dry air, is easy to follow-up drying.
Further, the pressure that the airduct regulating valve 3 can adjust in hothouse 4 makes it operationally be in tiny structure.
The speed that material to be dried reclaimed water is analyzed is improved, required temperature is dried in effectively reduction.
Further, the regeneration of the dehumidifier can apply a variety of clean and effective energy, such as solar energy, geothermal energy, industry
Waste heat.And then effectively reduce energy expenditure.
Further, the operation drying temperature of the drying device is 30 ~ 50 DEG C.And the device is not limited to 30 ~ 50 DEG C
Drying temperature, can also change operational factor using other drying temperatures.
Further, the gas plate type heat exchanger 6 can preheat the circulating current after two grades are dehumidified, and simultaneously right
The high humidity circulating current that the hothouse 4 is discharged carries out precooling.Improve overall operational energy efficiency.
Embodiment 2：
The drying process of any one tiny structure low temperature drying device comprises the following steps：
Step1：Low temperature and low humidity circulating current enters the rapid moisture absorption of the hothouse 4, uniform drying and is arranged in each layer basin 10
On material to be dried；
Step2：It is changed into hot wet circulating current after circulating current hygroscopic desiccation material, and under the swabbing action of circulating fan 5
Hothouse is left, heat exchange is carried out into the circulating current after the interior two grades of dehumidifying with back segment of the gas plate type heat exchanger 6, realizes
Leave the precooling of the hot wet circulating current of hothouse；
Step3：Circulating current after precooling leaves the gas plate type heat exchanger 6 and enters source pump inner evaporator 8,
Heat release, which significantly cools and condensed, in evaporator separates out moisture in air-flow, as one-level dehumidifying Posterior circle air-flow, is then departed from evaporation
Device enters the dehumidifier 7；
Step4：One-level dehumidifying Posterior circle air-flow in dehumidifier is dehumidified by further depth, removes vapor therein and is formed
The extremely low cold dry gas stream of humidity be two grades dehumidifying after circulating current, subsequently into gas plate type heat exchanger described in Step2 6 with
The hot wet circulating current for leaving hothouse 4 carries out heat exchange, realizes the preheating of the circulating current after two grades of dehumidifying；
Step5：Circulating current after two grades of dehumidifying passes through Step4 preheating, subsequently into the source pump internal condensation device 8
In be further thermally formed required low temperature（About 30 ~ 50 DEG C）Low humidity（Relative humidity 0 ~ 5%）Circulating current, eventually passes airduct
The hothouse 4 is returned after the regulation of regulating valve 3, is entered here according to the numerical value of pressure vacuum meter using airduct regulation valve regulation
The low temperature and low humidity circulating air flow of hothouse, the airduct regulating valve, which makes to be formed in hothouse, is best suitable for the micro- negative of material to be dried
Pressure value, thereafter returns to Step1, and the tiny structure low temperature drying to material is realized in and so on circulation.
Embodiment 3：
Further, using tiny structure low temperature drying device and its drying process, for high added value and warm to drying
Degree is extremely sensitive and can not break the material progress highly effective drying of its active ingredient of ring.
It is preferred that scheme, using tiny structure low temperature drying device and its drying process, for Chinese herbal medicine, health products, kind
Son, high-grade agricultural product and seafood products carry out highly effective drying.
Embodiment 4：
A kind of drying process of tiny structure low temperature drying device is as follows：
As shown in figure 1, dispersed be arranged in inside hothouse 4 of the special thermo-responsive material of low temperature drying to be employed is put first
Put on the layering basin 10 of material to be dried, each layer of basin can be extracted out out of hothouse on each layer fixed mount here,
Each layer installed back again after the complete material to be dried of hothouse disposed outside in hothouse is dried on plate rail, finally closes drying
The band sealing external door of room makes to be isolated from the outside inside hothouse, convenient and dry process formation tiny structure；
Following start dries operation, starts circulating fan 5, makes circulating current steady flow, from doing that hothouse leaves
The path that circulates of dry circulating current is：Inside hothouse 10 → circulating fan, 5 → gas, 6 → source pump of plate type heat exchanger
Evaporator 8 → dehumidifier, 7 → gas plate type heat exchanger 6 → source pump internal condensation device 2 → airduct, 3 → hothouse of regulating valve
10；
Circulating fan start and it is stable after, start dehumidifier 7 and source pump inner compressor 1, it is then true according to pressure
The display numerical value regulation airduct regulating valve 3 of empty table 11 makes hothouse be internally formed the micro- negative of stable and suitable correspondence material to be dried
Pressure value, and be persistently dried to run up to and material to be dried is reached dry requirement, finally close system operation；In order to ensure
The safety and stability of system, preferentially stops source pump inner compressor 1 and the 30s that is delayed turns off dehumidifier 7 and circulation during closing
Blower fan 5.
Embodiment 5：
Detailed process of the drying cycles air-flow when internal system is circulated and removes contained humidity in material to be dried is as follows：
Detailed process of the drying cycles air-flow when internal system is circulated and removes contained humidity in material to be dried is as follows：
（1）Low temperature（30~50℃）Low humidity（0~5%）Circulating current is evenly arranged in into the rapid hygroscopic desiccation of the hothouse 10
Material to be dried on each layer basin 10；
（2）It is changed into hot wet circulating current after circulating current hygroscopic desiccation material, and is left under the swabbing action of circulating fan 5
Hothouse 10, into heat exchange is carried out with the circulating current after two grades of dehumidifying of back segment in the gas plate type heat exchanger 6, realize from
Open the precooling of the hot wet circulating current of hothouse 10；
（3）Circulating current after precooling leaves the gas plate type heat exchanger 6 and enters source pump inner evaporator 8, is steaming
Heat release, which significantly cools and condensed, in hair device 8 separates out moisture in air-flow, as one-level dehumidifying Posterior circle air-flow（0 ~ 10 DEG C of temperature, phase
To humidity 100%）, it is then departed from evaporator 8 and enters the dehumidifier 7；
（4）One-level dehumidifying Posterior circle air-flow in dehumidifier 7 removes vapor therein by the dehumidifying of further depth and forms wet
The extremely low low temperature dry gas stream of degree is the circulating current after two grades of dehumidifying（0 ~ 10 DEG C of temperature, relative humidity 0 ~ 10%）, subsequently into step
Suddenly（2）The gas plate type heat exchanger 6 and the hot wet circulating current progress heat exchange for leaving hothouse 10, are realized after two grades of dehumidifying
Circulating current preheating；
（5）Circulating current after two grades of dehumidifying passes through step（4）Preheating, subsequently into the source pump internal condensation device 2
In be further thermally formed required low temperature and low humidity circulating current（30 ~ 50 DEG C of temperature, relative humidity 0 ~ 5%）, eventually pass airduct
The hothouse 10 is returned to after the regulation of regulating valve 2, the numerical value regulation here according to pressure vacuum meter 11 enters before hothouse 10
The airduct regulating valve 3 make to form the tiny structure value for being best suitable for material to be dried in hothouse 10, thereafter return to step（1）,
And so on the tiny structure low temperature drying to material is realized in circulation.
Obviously, above-mentioned embodiment is only intended to clearly illustrate example of the present invention, and is not to this hair
The restriction of bright embodiment, to those skilled in the art, it can also be made easily on the basis of the above description
Its formal change or replacement, and these change or substitute also will be contained in present invention determine that protection domain within.
Claims (10)
1. a kind of tiny structure low temperature drying device, it is characterised in that：It includes hothouse（4）, the hothouse（4）Inside is set
There is basin（10）, the hothouse（4）Bottom be communicated with source pump internal condensation device（2）, inside the source pump
Condenser（2）Simultaneously with source pump inner compressor（1）, source pump inner evaporator（8）With gas plate type heat exchanger（6）
It is connected；The hothouse（4）Top pass through circulating fan（5）With gas plate type heat exchanger（6）It is connected；In the source pump
Portion's evaporator（8）With gas plate type heat exchanger（6）Between be also equipped with dehumidifier（7）；The source pump internal condensation device（2）
And hothouse（4）Between pipeline on airduct regulating valve is installed（3）And pressure vacuum meter（11）；It is cold inside the source pump
Condenser（2）With source pump inner evaporator（8）Between pipeline on source pump internal restriction expansion valve is installed（9）.
2. a kind of tiny structure low temperature drying device according to claim 1, it is characterised in that：The pressure vacuum meter（11）
Hothouse can be detected（4）Internal negative pressure numerical value.
3. a kind of tiny structure low temperature drying device according to claim 1, it is characterised in that：The source pump can be used
Common electricity drive heat pump unit, can also use the lithium bromide absorption type heat pump unit of Driven by Solar Energy.
4. a kind of tiny structure low temperature drying device according to claim 1, it is characterised in that：The dehumidifier（7）It can adopt
With rotary dehumidifier or solution dehumidifier.
5. a kind of tiny structure low temperature drying device according to claim 1, it is characterised in that：The airduct regulating valve（3）
Adjustable hothouse（4）Interior pressure makes it operationally be in tiny structure.
6. a kind of tiny structure low temperature drying device according to claim 1, it is characterised in that：The regeneration of the dehumidifier can
Using a variety of clean and effective energy, such as solar energy, geothermal energy, industrial exhaust heat.
7. a kind of tiny structure low temperature drying device according to claim 1, it is characterised in that：The gas plate type heat exchanger
（6）The circulating current after two grades are dehumidified can be preheated, and simultaneously to the hothouse（4）The hot wet circulating air of discharge is flowed into
Row precooling.
8. comprised the following steps using the drying process of claim 1-7 any one tiny structure low temperature drying devices：
Step1：Low temperature and low humidity circulating current enters the hothouse（4）Rapid moisture absorption, uniform drying are arranged in each layer basin
（10）On material to be dried；
Step2：It is changed into low temperature and high relative humidity circulating current after circulating current hygroscopic desiccation material, and in the circulating fan（5）Suction
Hothouse is left under effect, into the gas plate type heat exchanger（6）Circulating current after interior two grades of dehumidifying with back segment carries out heat
Exchange, realize the precooling for the low temperature and high relative humidity circulating current for leaving hothouse；
Step3：Circulating current after precooling leaves the gas plate type heat exchanger（6）Into source pump inner evaporator
（8）, heat release, which significantly cools and condensed, in evaporator separates out moisture in air-flow, as one-level dehumidifying Posterior circle air-flow, Ran Houli
Evaporator is driven into the dehumidifier（7）；
Step4：Circulating current after one-level dehumidifying is in dehumidifier（7）It is middle to be dehumidified by further depth, remove vapor therein
It is the circulating current after two grades of dehumidifying to form the extremely low cold dry gas stream of humidity, subsequently into gas plate-type heat-exchange described in Step2
Device（6）With leaving hothouse（4）Low temperature and high relative humidity circulating current carry out heat exchange, realize two grades dehumidifying after circulating current it is pre-
Heat；
Step5：Circulating current after two grades of dehumidifying passes through Step4 preheating, subsequently into the source pump internal condensation device
（8）In be further thermally formed required low temperature and low humidity circulating current, eventually pass airduct regulating valve（3）Regulation after return to institute
State hothouse（4）, airduct regulating valve is used here according to the numerical value of pressure vacuum meter（3）Regulation enters the low temperature and low humidity of hothouse
Circulating air flow, the airduct regulating valve（3）Make hothouse（4）It is interior to form the tiny structure value for being best suitable for material to be dried, hereafter
Step1 is returned to, the tiny structure low temperature drying to material is realized in and so on circulation.
9. using tiny structure low temperature drying device and its drying process described in claim 8, for high added value and
Material progress highly effective drying extremely sensitive to drying temperature and that its active ingredient of ring can not be broken.
10. using tiny structure low temperature drying device and its drying process described in claim 8, for Chinese herbal medicine, health products,
Seed, high-grade agricultural product and seafood products carry out highly effective drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710531694.5A CN107289742A (en) | 2017-07-03 | 2017-07-03 | A kind of tiny structure low temperature drying device and its drying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710531694.5A CN107289742A (en) | 2017-07-03 | 2017-07-03 | A kind of tiny structure low temperature drying device and its drying process |
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| Publication Number | Publication Date |
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| CN107289742A true CN107289742A (en) | 2017-10-24 |
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| CN201710531694.5A Pending CN107289742A (en) | 2017-07-03 | 2017-07-03 | A kind of tiny structure low temperature drying device and its drying process |
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| CN (1) | CN107289742A (en) |
Cited By (3)
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| CN109506421A (en) * | 2018-10-12 | 2019-03-22 | 联业织染(珠海)有限公司 | A kind of solidifying dehumidifying drying method of cheese negative pressure pumping |
| CN110006243A (en) * | 2019-04-16 | 2019-07-12 | 广东技术师范大学 | A kind of evaporator and fruit and vegetable dryness system |
| CN112066686A (en) * | 2020-10-09 | 2020-12-11 | 浙江浙能技术研究院有限公司 | Novel condensation heat recovery disc type sludge low-temperature drying system |
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