CN110849089A - Closed super dry air drying system - Google Patents
Closed super dry air drying system Download PDFInfo
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- CN110849089A CN110849089A CN201911248491.0A CN201911248491A CN110849089A CN 110849089 A CN110849089 A CN 110849089A CN 201911248491 A CN201911248491 A CN 201911248491A CN 110849089 A CN110849089 A CN 110849089A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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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
- 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
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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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
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
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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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
- F26B21/083—Humidity by using sorbent or hygroscopic materials, e.g. chemical substances, molecular sieves
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- 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
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a closed type ultra-dry air drying system which comprises a material drying chamber and a double-layer corridor pipeline, wherein a closed type air circulation system is formed between the double-layer corridor pipeline and the material drying chamber, a stabilizer is arranged in the double-layer corridor pipeline, part of the stabilizer is arranged between an evaporator and a condenser, the evaporator, the condenser, an external water collecting device and an external compressor form a complete drying system, the double-layer corridor pipeline comprises an upper pipeline and a lower pipeline, the stabilizer is arranged in two layers, the two layers of the stabilizer are respectively arranged in the upper pipeline and the lower pipeline, the system mainly adopts a closed type circulation drying mode, a main drying medium is ultra-dry air or extremely-dry air, the energy consumption is low, the cleanness is high, and the quality of a dried product can be efficiently protected.
Description
Technical Field
The invention relates to the technical field of drying, in particular to a closed type ultra-dry air drying system.
Background
Modern drying technologies in China are gradually developed from the 20 th century and the 50 th century, so far, common drying equipment such as airflow drying, spray drying, fluidized bed drying, rotary flash drying, infrared drying, microwave drying, freeze drying and the like can be produced and supplied to markets in China, and certain more novel drying technologies such as impact drying, convection drying, overheating drying, pulse combustion drying, heat pump drying and the like are developed and researched, and some drying technologies are industrially applied.
Drying refers to the process of vaporizing the water (or solvent) in the material by heat energy and carrying away the generated vapor by inert gas in the chemical industry. For example, when drying a solid, moisture (or solvent) diffuses from the interior of the solid to the surface and vaporizes from the surface of the solid. Drying can be divided into natural drying and artificial drying.
For example, when the vacuum freeze drying equipment is in operation, bubbles or material layering may occur on the surface of a dried object, and ice blocks are generated inside the vacuum freeze drying equipment, so that the vacuum freeze drying equipment is inconvenient to clean and has a long service life;
for example, when the heat drying mode is used in the food drying process, part of nutritional value in the food can be lost due to overhigh temperature, the edible value of the food is influenced, and the drying mode has high energy consumption and increases the drying cost to a certain extent;
further, for example, adsorption drying requires frequent replacement of the adsorbent material during use, which is inconvenient and costly.
Disclosure of Invention
The invention aims to overcome the defects and provide a closed ultra-dry air drying system which has low energy consumption, high cleanness and good drying effect.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a closed super dry air drying system, includes material drying chamber and double-deck vestibule pipeline, form a closed air circulation system between double-deck vestibule pipeline and the material drying chamber, be provided with the stabilizer just in the double-deck vestibule pipeline the stabilizer part is arranged between evaporimeter and condenser, and evaporimeter and condenser become a complete drying system with outside water collection device and compressor, the compressor is connected with the evaporimeter, be provided with the recovery pipeline between water collection device and the evaporimeter, double-deck vestibule pipeline includes pipeline and lower pipeline, the top of stabilizer arrange in last pipeline and the below of stabilizer arrange in the lower pipeline.
Preferably, the lower pipeline is an air inlet pipeline, the upper pipeline is an air outlet pipeline, the evaporator and the condenser are uniformly distributed in the upper pipeline, and the circulating air pump is arranged in the upper pipeline.
Preferably, the evaporator can reduce the temperature of the air to 0-30 ℃, the stabilizer can increase the temperature of the air cooled by the evaporator to-5-5 ℃, and the condenser can increase the temperature of the air treated by the stabilizer to 20-30 ℃.
Preferably, the stabilizer includes fixed frame, circulating line and division board, fixed frame arrange in the double-deck gallery pipeline, the circulating line set up in the fixed frame just the division board arrange in fixed frame's middle part, the circulating line intussuseption is filled with the conduction media.
By adopting the technical scheme, the circulating pipeline is filled with the conducting medium, the fixed frame can be divided into the upper warm flow layer and the lower cold flow layer by the partition board, the lower cold flow layer is positioned in the lower pipeline, the upper warm flow layer is positioned in the upper pipeline, the dried air can be primarily cooled by the lower cold flow layer, the air cooled by the evaporator can be heated to a certain degree by the upper warm flow layer, according to the principle of heat transfer, the temperature is transferred from high to low, the temperature of the dried air is higher than that of the conducting medium below, the temperature of the dried air is reduced, the temperature of the conducting medium below is increased, the temperature of the air passing through the evaporator is lower than that of the conducting medium, the air cooled by the evaporator is increased, the temperature of the conducting medium above is reduced, and the temperature of the conducting medium positioned in the lower pipeline is increased, while the temperature of the conducting agent in the upper pipeline is in a descending state, the rising temperature of the conducting agent at the lower part can conduct to the conducting agent at the upper part, according to the law of conservation of heat, the heat of the lower conducting agent enters the upper conducting agent, the heat in the lower conducting agent is relatively reduced, so that the temperature of the lower conducting agent is reduced, as a result of the reduced heat transfer into the upper conductive agent, the heat in the upper conductive agent increases, so that the temperature of the upper conducting agent can be raised, the lower conducting agent can be continuously heated by the dried air, the temperature of the upper conducting agent can be continuously reduced by the air after the evaporator, therefore, heat circulation is formed in the circulating pipeline, and the temperatures of the upper conducting agent and the lower conducting agent are always kept in a state that the temperature of the lower conducting agent is low and the temperature of the upper conducting agent is high.
Preferably, the conducting agent is one of calcium chloride solution, alcohol or antifreeze.
The drying step of the closed type ultra-dry air drying system is as follows: (1) firstly, placing an object to be dried in a material drying chamber, closing the material drying chamber to form a closed circulation system between the material drying chamber and a double-layer corridor pipeline, then starting an evaporator, a condenser, a compressor, a stabilizer and a circulating air pump, when the temperature of air in the material drying chamber is lower than the proper drying temperature of the object to be dried, firstly, the condenser gives off part of the temperature into the material drying chamber, firstly, the temperature of the air in the material drying chamber is raised, when the temperature is raised to the proper drying temperature, the temperature is stopped to be raised, and the air in the material drying chamber enters from a lower pipeline of the double-layer corridor pipeline;
(2) the air entering the lower pipeline firstly passes through the stabilizer in the lower pipeline, the stabilizer in the lower pipeline can adjust the temperature of the air to a certain degree, the adjusted air then enters the evaporator, the evaporator can cool the air adjusted by the stabilizer to-25 ℃ -30 ℃, the temperature of the air is reduced through cooling, so that water vapor can be condensed into water when meeting cold, the condensed water enters the water collecting device through the recovery pipeline for recycling, the relative humidity in the air is higher at the moment, the low-temperature air acted by the evaporator enters the stabilizer in the upper pipeline, the air is heated to 0 ℃ by the stabilizer in the upper pipeline, and then the air is heated to 25 ℃ again after the action of the condenser;
(3) the cold air is heated, so that the moisture content in unit air is increased, the relative humidity in the heated air is reduced to form ultra-dry air, the ultra-dry air enters the material drying chamber through the circulating air pump, and the ultra-dry air dries an object to be dried;
(4) the ultra-dry air dries the object to be dried, the moisture on the object to be dried enters the ultra-dry air with low relative humidity under the existence of moisture difference, so that the moisture content in the ultra-dry air with low relative humidity is increased, and the air with increased relative humidity enters the lower pipeline again;
(5) the stabilizer in the lower pipeline can stabilize the air with higher relative humidity entering the lower pipeline, then the stabilized air enters the evaporator, the steam device can cool the air acted by the stabilizer, so that the water content in the air is reduced, the water vapor can be condensed into water to flow out, the condensed water can enter the external water collecting device through the recovery pipeline to be collected, the temperature of the air just entering the upper pipeline is reduced to-25 ℃ through the evaporator, and then the cooled air enters the voltage stabilizer in the upper pipeline again to be primarily heated;
(6) the air after the preliminary temperature rise is heated to 25 ℃ through the condenser again, so that the air is in the ultra-dry air with low relative humidity again, the air enters the material drying chamber through the action of the circulating air pump again, the article to be dried is dried again, the relative humidity of the ultra-dry air is increased again, the air with the increased relative humidity enters the lower pipeline again, and the air is circulated for about 15 minutes in a reciprocating manner, so that the ultra-dry air with the relative humidity reduced to below 10% in the material drying chamber can be obtained;
(7) and after the drying of the dried object is finished, closing the evaporator, the condenser, the compressor, the stabilizer and the circulating air pump, opening the material drying chamber, and taking out the dried object.
The drying step of the closed type ultra-dry air drying system is as follows: (1) firstly, placing an object to be dried in a material drying chamber, closing the material drying chamber to form a closed circulation system between the material drying chamber and a double-layer corridor pipeline, then starting an evaporator, a condenser, a compressor, a stabilizer and a circulating air pump, when the temperature of air in the material drying chamber is higher than the proper drying temperature of the object to be dried, firstly cooling the air in the material drying chamber by the evaporator, and stopping cooling when the temperature of the air in the material drying chamber is reduced to the proper drying temperature, and allowing the air in the material drying chamber to enter from a lower pipeline of the double-layer corridor pipeline;
(2) the air entering the lower pipeline firstly passes through the stabilizer in the lower pipeline, the stabilizer in the lower pipeline can adjust the temperature of the air to a certain degree, the adjusted air then enters the evaporator, the evaporator can cool the air adjusted by the stabilizer to-25 ℃ -30 ℃, the temperature of the air is reduced through cooling, so that water vapor can be condensed into water when meeting cold, the condensed water enters the water collecting device through the recovery pipeline for recycling, the relative humidity in the air is higher at the moment, the low-temperature air acted by the evaporator enters the stabilizer in the upper pipeline, the air is heated to 0 ℃ by the stabilizer in the upper pipeline, and then the air is heated to 25 ℃ again after the action of the condenser;
(3) the cold air is heated, so that the moisture content in unit air is increased, the relative humidity of the heated air is reduced, the air meets the requirement of ultra-dry air, the ultra-dry air enters the material drying chamber through the circulating air pump, and the ultra-dry air dries an object to be dried;
(4) the ultra-dry air dries the object to be dried, the moisture on the object to be dried enters the ultra-dry air under the existence of moisture difference, the relative humidity of the ultra-dry air is increased, and the air with the increased relative humidity enters the lower pipeline again;
(5) the stabilizer in the lower pipeline can stabilize the air with higher relative humidity entering the lower pipeline, then the stabilized air enters the evaporator, the steam device can cool the air stabilized by the stabilizer, so that the water content in unit air is reduced, water vapor can be condensed into water to flow out, the condensed water enters the external water collecting device through the recovery pipeline to be collected, the temperature of the air just entering the upper pipeline is reduced to-25 ℃ through the evaporator, and then the cooled water enters the voltage stabilizer in the upper pipeline again to be subjected to primary heating;
(6) the air after the preliminary temperature rise is heated to 25 ℃ through the condenser again, so that the air forms super-dry air again, enters the material drying chamber under the action of the circulating air pump again, dries the objects to be dried again, increases the relative humidity of the air again, and then enters the lower pipeline again, and the air with the increased relative humidity is circulated for about 15min in a reciprocating way, so that the circulating air in the material drying chamber forms the super-dry air with the relative humidity reduced to below 10%;
(7) and after the drying of the dried object is finished, closing the evaporator, the condenser, the compressor, the stabilizer and the circulating air pump, opening the material drying chamber, and taking out the dried object.
Preferably, the condenser may be provided in plurality as needed.
The air with the air relative humidity lower than 15% and higher than 5% is called ultra-dry air, and the air with the air relative humidity lower than 5% is called ultra-dry air, the drying technology of the invention mainly absorbs and dries the moisture on the dried object through the ultra-dry air or the ultra-dry air under normal temperature and pressure, and the method has the following advantages:
1. the characteristic of guaranteeing the article that can be fine is carried out the drying to article under normal atmospheric temperature state, avoids the interior ice crystal that appears of food in conventional low temperature freezing, and then the phenomenon of the quality degradation that causes, and product quality is higher.
2. Through closed circulation drying, air in a certain space is fully utilized, energy consumption can be saved by 78% -80% compared with the existing heating drying, and energy consumption can be saved by more than 60% compared with the freezing vacuum drying.
3. The drying technology adopts normal-temperature ultra-dry air or extremely-dry air as a drying medium, so that objects sensitive to temperature can be dried.
4. The water produced during the drying process is pure and available.
5. The drying mode does not generate waste gas or harmful gas.
6. In the process of generating the ultra-dry air or the extremely-dry air, the frost phenomenon is avoided, and the drying effect is ensured.
7. The stabilizer is arranged in the drying system, and can perform certain transition effect on air heat exchange through the stabilizer, so that the stable output of the whole equipment is ensured.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment;
FIG. 2 is a schematic diagram of an embodiment for showing a structure of a stabilizer;
FIG. 3 is a graph showing the change of relative humidity of air in a material drying chamber with time in a temperature increasing mode;
FIG. 4 is a graph showing the change of the air temperature in the material drying chamber with time in the temperature increasing mode;
FIG. 5 is a graph showing the change of relative humidity of air in a material drying chamber with time in a cooling mode;
fig. 6 is a graph showing the change of the air temperature in the material drying chamber with time in the temperature lowering mode.
Reference numerals: 1. a material drying chamber; 2. an evaporator; 3. a condenser; 4. a double-layer gallery pipeline; 5. a stabilizer; 6. a water collection device; 7. a compressor; 8. a recovery pipeline; 9. an upper pipeline; 10. a lower pipeline; 11. a circulating air pump; 12. a fixed mount; 13. a circulation pipe; 14. a partition plate.
Detailed Description
The following description is only a preferred embodiment of the present invention, and the protection scope is not limited to the embodiment, and any technical solution that falls under the idea of the present invention should fall within the protection scope of the present invention. It should also be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention.
As shown in the figure 1, a closed type ultra-dry air drying system comprises a material drying chamber 1 and a double-layer corridor pipeline 4, a closed type air circulation system is formed between the double-layer corridor pipeline 4 and the material drying chamber 1, a stabilizer 5 and a stabilizer 5 part are arranged in the double-layer corridor pipeline 4 and are arranged between an evaporator 2 and a condenser 3, the evaporator 2, the condenser 3, an external water collecting device 6 and a compressor 7 form a complete drying system, the compressor 7 is connected with the evaporator 2, a recovery pipeline 8 is arranged between the water collecting device 6 and the evaporator 2, the double-layer corridor pipeline 4 comprises an upper pipeline 9 and a lower pipeline 10, the upper part of the stabilizer 5 is arranged in the upper pipeline 9, and the lower part of the stabilizer 5 is arranged in the lower pipeline 10.
The lower pipeline 10 is an air inlet pipeline, the upper pipeline 9 is an air outlet pipeline, the evaporator 2 and the condenser 3 are uniformly distributed in the upper pipeline 9, and the circulating air pump 11 is arranged in the upper pipeline 9.
The evaporator 2 can reduce the temperature of the air to 0-30 ℃, the stabilizer 5 can heat the air cooled by the evaporator 2 to-5-5 ℃, and the condenser 3 can heat the air treated by the stabilizer 5 to 20-30 ℃.
As shown in fig. 2, the stabilizer 5 includes a fixed frame, a circulation pipeline 13 and a partition plate 14, the fixed frame is disposed in the double-layer gallery pipeline 4, the circulation pipeline 13 is disposed in the fixed frame, the partition plate 14 is disposed in the middle of the fixed frame, and the circulation pipeline 13 is filled with a conductive agent which is a calcium chloride solution.
Calcium chloride is filled in the circulating pipeline 13, the fixed frame is divided into an upper warm flow layer and a lower cold flow layer by a partition plate 14, the lower cold flow layer is positioned in the lower pipeline 10, the upper warm flow layer is positioned in the upper pipeline 9, the dried air can be primarily cooled by the lower cold flow layer, the air cooled by the evaporator 2 can be heated to a certain degree by the upper warm flow layer, according to the principle of heat transfer, the temperature is transferred from high to low, the temperature of the dried air is higher than that of the lower conducting medium, the temperature of the dried air is reduced, the temperature of the lower conducting medium is increased, the temperature of the air passing through the evaporator 2 is lower than that of the conducting medium, the air cooled by the evaporator 2 is increased, the temperature of the upper conducting medium is reduced, and the temperature of the conducting medium positioned in the lower pipeline 10 is in an increasing state, while the temperature of the conductive agent in the upper pipe 9 is in a decreased state, the increased temperature of the lower conductive agent is conducted to the upper conductive agent, according to the law of conservation of heat, the heat of the lower conducting agent enters the upper conducting agent, the heat in the lower conducting agent is relatively reduced, so that the temperature of the lower conducting agent is reduced, as a result of the reduced heat transfer into the upper conductive agent, the heat in the upper conductive agent increases, so that the temperature of the upper conducting agent is raised, the lower conducting agent is continuously heated by the dried air, the temperature of the upper conducting agent is continuously cooled by the air after the evaporator 2, thereby forming heat circulation in the circulation pipe 13 and ensuring that the temperatures of the upper and lower conducting agents are always in the state of low temperature of the lower conducting agent and high temperature of the upper conducting agent.
The closed type ultra-dry air drying system has two working modes, wherein one working mode is a heating mode, and the other working mode is a cooling mode.
The steps of the heating mode are as follows: (1) firstly, an object to be dried is placed in a material drying chamber 1, the material drying chamber 1 is closed, a closed circulation system is formed between the material drying chamber 1 and a double-layer corridor pipeline 4, then an evaporator 2, a condenser 3, a compressor 7, a stabilizer 5 and a circulating air pump 11 are started, when the temperature of air in the material drying chamber 1 is lower than the proper drying temperature of the object to be dried, part of temperature is firstly emitted into the material drying chamber 1 by the condenser 3, the temperature of the air in the material drying chamber 1 is firstly increased, when the temperature is increased to the proper drying temperature, the temperature is stopped to be increased, and the air in the material drying chamber 1 can enter from a lower pipeline 10 of the double-layer corridor pipeline 4;
(2) the air entering the lower pipeline 10 firstly passes through the stabilizer 5 in the lower pipeline 10, the stabilizer 5 in the lower pipeline 10 can regulate the temperature of the air to a certain degree, the regulated air then enters the evaporator 2, the evaporator 2 can cool the air regulated by the stabilizer 5 to-25 ℃ -30 ℃, the temperature of the air is reduced through cooling, so that water vapor can be condensed into water when meeting cold, the condensed water enters the water collecting device 6 through the recovery pipeline 8 for recycling, the relative humidity in the air is higher, the low-temperature air acted by the evaporator 2 enters the stabilizer 5 of the upper pipeline 9, the stabilizer 5 in the upper pipeline 9 can heat the air to 0 ℃, and then the air is heated to 25 ℃ again under the action of the condenser 3;
(3) the cold air is heated, so that the moisture content in unit air is increased, the relative humidity in the heated air is reduced to form ultra-dry air, the ultra-dry air enters the material drying chamber 1 through the circulating air pump 11, and the ultra-dry air dries an object to be dried;
(4) the ultra-dry air dries the object to be dried, the moisture on the object to be dried enters the ultra-dry air with low relative humidity under the existence of moisture difference, so that the moisture content in the ultra-dry air with low relative humidity is increased, and the air with increased relative humidity enters the lower pipeline 10 again;
(5) the stabilizer 5 in the lower pipeline 10 can stabilize the air with higher relative humidity entering the lower pipeline 10, then the stabilized air enters the evaporator 2, the steam device can cool the air acted by the stabilizer 5, so that the water content in the air is reduced, the water vapor can be condensed into water to flow out, the condensed water can enter the external water collecting device 6 through the recovery pipeline 8 to be collected, the temperature of the air just entering the upper pipeline 9 is reduced to-25 ℃ through the evaporator 2, and then the cooled air enters the voltage stabilizer in the upper pipeline 9 again to be subjected to primary temperature rise;
(6) the air after the preliminary temperature rise is heated to 25 ℃ through the condenser 3 again, so that the air is in the ultra-dry air with low relative humidity again, the air enters the material drying chamber 1 under the action of the circulating air pump 11 again, the article to be dried is dried again, the relative humidity of the ultra-dry air is increased again, the air with the increased relative humidity enters the lower pipeline 10 again, and the air is circulated for about 15 minutes in a reciprocating manner, so that the circulating air in the material drying chamber 1 is reduced to the ultra-dry air with the relative humidity of less than 10%;
(7) and after the drying of the dried object is finished, closing the evaporator 2, the condenser 3, the compressor 7, the stabilizer 5 and the circulating air pump 11, opening the material drying chamber 1, and taking out the dried object.
The cooling mode comprises the following steps: (1) firstly, placing an object to be dried in a material drying chamber 1, closing the material drying chamber 1 to form a closed circulation system between the material drying chamber 1 and a double-layer corridor pipeline 4, then starting an evaporator 2, a condenser 3, a compressor 7, a stabilizer 5 and a circulating air pump 11, when the temperature of air in the material drying chamber 1 is higher than the proper drying temperature of the object to be dried, firstly cooling the air in the material drying chamber 1 by the evaporator 2, and stopping cooling when the temperature of the air in the material drying chamber 1 is reduced to the proper drying temperature, and allowing the air in the material drying chamber 1 to enter from a lower pipeline 10 of the double-layer corridor pipeline 4;
(2) the air entering the lower pipeline 10 firstly passes through the stabilizer 5 in the lower pipeline 10, the stabilizer 5 in the lower pipeline 10 can regulate the temperature of the air to a certain degree, the regulated air then enters the evaporator 2, the evaporator 2 can cool the air regulated by the stabilizer 5 to-25 ℃ -30 ℃, the temperature of the air is reduced through cooling, so that water vapor can be condensed into water when meeting cold, the condensed water enters the water collecting device 6 through the recovery pipeline 8 for recycling, the relative humidity in the air is higher, the low-temperature air acted by the evaporator 2 enters the stabilizer 5 of the upper pipeline 9, the stabilizer 5 in the upper pipeline 9 can heat the air to 0 ℃, and then the air is heated to 25 ℃ again under the action of the condenser 3;
(3) the cold air is heated, so that the moisture content in unit air is increased, the relative humidity of the heated air is reduced, the air meets the requirement of ultra-dry air, the ultra-dry air enters the material drying chamber 1 through the circulating air pump 11, and the ultra-dry air dries an object to be dried;
(4) the ultra-dry air dries the object to be dried, the moisture on the object to be dried enters the ultra-dry air under the existence of moisture difference, the relative humidity of the ultra-dry air is increased, and the air with the increased relative humidity enters the lower pipeline 10 again;
(5) the stabilizer 5 in the lower pipeline 10 can stabilize the air with higher relative humidity entering the lower pipeline 10, then the stabilized air enters the evaporator 2, the steam device can cool the air stabilized by the stabilizer 5, so that the water content in unit air is reduced, water vapor can be condensed into water to flow out, the condensed water can enter the external water collecting device 6 through the recovery pipeline 8 to be collected, the temperature of the air just entering the upper pipeline 9 is reduced to-25 ℃ through the evaporator 2, and then the cooled water enters the voltage stabilizer in the upper pipeline 9 again to be subjected to primary temperature rise;
(6) the air after the preliminary temperature rise is heated to 25 ℃ through the condenser 3 again, so that the air forms super-dry air again, the air enters the material drying chamber 1 under the action of the circulating air pump 11 again, the article to be dried is dried again, the relative humidity of the air is increased again, the air with the increased relative humidity enters the lower pipeline 10 again, and the air is circulated for about 15min in a reciprocating manner, so that the circulating air in the material drying chamber 1 forms super-dry air with the relative humidity reduced to below 10%;
(7) and after the drying of the dried object is finished, closing the evaporator 2, the condenser 3, the compressor 7, the stabilizer 5 and the circulating air pump 11, opening the material drying chamber 1, and taking out the dried object.
The condenser 3 in the temperature raising mode and the temperature lowering mode may be provided in plurality as needed.
The change of the relative humidity of the air in the material drying chamber with time in the temperature raising mode was detected, and the result is shown in fig. 3.
The change in the air temperature in the material drying chamber with time in the temperature increasing mode was detected, and the result is shown in fig. 4.
The change of the relative humidity of the air in the material drying chamber in the temperature reduction mode with time is detected, and the result is shown in fig. 5.
The change of the air temperature in the material drying chamber with time in the cooling mode was detected, and the result is shown in fig. 6.
Claims (8)
1. The utility model provides a closed super dry air drying system, its characterized in that, includes material drying chamber (1) and double-deck vestibule pipeline (4), form a closed air circulation system between double-deck vestibule pipeline (4) and material drying chamber (1), be provided with stabilizer (5) just in double-deck vestibule pipeline (4) stabilizer (5) part is arranged between evaporimeter (2) and condenser (3), and evaporimeter (2) and condenser (3) become a complete drying system with outside water collection device (6) and compressor (7), compressor (7) are connected with evaporimeter (2), be provided with between water collection device (6) and evaporimeter (2) and retrieve pipeline (8), double-deck vestibule pipeline (4) include pipeline (9) and lower pipeline (10), the top of stabilizer (5) is arranged in last pipeline (9) and the below of stabilizer (5) is arranged in pipeline (9) under, (5) pipeline 10) And (4) the following steps.
2. The enclosed ultra-dry air drying system according to claim 1, wherein the lower duct (10) is an air inlet duct, the upper duct (9) is an air outlet duct, the evaporator (2) and the condenser (3) are both disposed in the upper duct (9), and the circulating air pump (11) is disposed in the upper duct (9).
3. The enclosed ultra-dry air drying system according to claim 2, wherein the evaporator (2) can lower the temperature of the air to 0 ℃ to-30 ℃, the stabilizer (5) can raise the temperature of the air cooled by the evaporator (2) to-5 ℃, and the condenser (3) can raise the temperature of the air processed by the stabilizer (5) to 20 ℃ to 30 ℃.
4. The enclosed ultra-dry air drying system according to claim 1, wherein the stabilizer (5) comprises a fixed frame, a circulation pipeline (13) and a partition plate (14), the fixed frame is arranged in the double-layer gallery pipeline (4), the circulation pipeline (13) is arranged in the fixed frame, the partition plate (14) is arranged in the middle of the fixed frame, and the circulation pipeline (13) is filled with a conductive medium.
5. The enclosed ultra-dry air drying system of claim 1, wherein the conductive agent is one of calcium chloride solution, alcohol or antifreeze.
6. The enclosed ultra-dry air drying system of claim 1, wherein the drying step is:
(1) firstly, placing an object to be dried in a material drying chamber (1), closing the material drying chamber (1), forming a closed circulation system between the material drying chamber (1) and a double-layer corridor pipeline (4), then starting an evaporator (2), a condenser (3), a compressor (7), a stabilizer (5) and a circulating air pump (11), when the temperature of air in the material drying chamber (1) is lower than the proper drying temperature of the object to be dried, firstly radiating partial temperature into the material drying chamber (1) by the condenser (3), heating the air in the material drying chamber (1), stopping heating when the temperature is raised to the proper drying temperature, and enabling the air in the material drying chamber (1) to enter a lower pipeline (10) of the double-layer corridor pipeline (4);
(2) the air entering the lower pipeline (10) firstly passes through the stabilizer (5) in the lower pipeline (10), the stabilizer (5) positioned in the lower pipeline (10) can adjust the temperature of the air to a certain degree, then the adjusted air enters the evaporator (2), the evaporator (2) can cool the air adjusted by the stabilizer (5) to-25-30 ℃, the temperature of the air is reduced through cooling, therefore, water vapor can be condensed into water when meeting cold, the condensed water enters the water collecting device (6) through the recovery pipeline (8) to be recycled, the relative humidity in the air is higher, the low-temperature air acted by the evaporator (2) enters the stabilizer (5) of the upper pipeline (9), the stabilizer (5) in the upper pipeline (9) enables the temperature of the air to be raised to 0 ℃, and then the air is raised to 25 ℃ again under the action of the condenser (3);
(3) the temperature of the cold air is increased, so that the moisture content in unit air is increased, the relative humidity in the heated air is reduced to form ultra-dry air, the ultra-dry air enters the material drying chamber (1) through the circulating air pump (11), and the ultra-dry air dries an object to be dried;
(4) the ultra-dry air dries the object to be dried, the moisture on the object to be dried enters the ultra-dry air with low relative humidity under the existence of moisture difference, so that the moisture content in the ultra-dry air with low relative humidity is increased, and the air with increased relative humidity enters the lower pipeline (10) again;
(5) the stabilizer (5) in the lower pipeline (10) can stabilize the air with higher relative humidity entering the lower pipeline (10), then the stabilized air enters the evaporator (2), the steam device can cool the air acted by the stabilizer (5), so that the water content in the air is reduced, the water vapor can be condensed into water to flow out, the condensed water can enter the external water collecting device (6) through the recovery pipeline (8) to be collected, the temperature of the air entering the upper pipeline (9) is reduced to-25 ℃ through the evaporator (2), and then the cooled air enters the pressure stabilizer in the upper pipeline (9) again to be primarily heated;
(6) the air after the preliminary temperature rise is heated to 25 ℃ through the condenser (3) again, so that the air is in the ultra-dry air with low relative humidity again, the air enters the material drying chamber (1) through the action of the circulating air pump (11) again, the articles to be dried are dried again, the relative humidity of the ultra-dry air is increased again, the air with the increased relative humidity enters the lower pipeline (10) again, and the air is circulated for about 15 minutes in a reciprocating way, so that the circulating air in the material drying chamber (1) can be reduced to the ultra-dry air with the relative humidity of less than 10%;
(7) and after the drying of the dried object is finished, closing the evaporator (2), the condenser (3), the compressor (7), the stabilizer (5) and the circulating air pump (11), opening the material drying chamber (1), and taking out the dried object.
7. The enclosed ultra-dry air drying system of claim 1, wherein the drying step is:
(1) firstly, placing an object to be dried in a material drying chamber (1), closing the material drying chamber (1), forming a closed circulation system between the material drying chamber (1) and a double-layer corridor pipeline (4), then starting an evaporator (2), a condenser (3), a compressor (7), a stabilizer (5) and a circulating air pump (11), when the temperature of air in the material drying chamber (1) is higher than the proper drying temperature of the object to be dried, firstly cooling the air in the material drying chamber (1) by the evaporator (2), and stopping cooling when the temperature of the air in the material drying chamber (1) is reduced to the proper drying temperature, and allowing the air in the material drying chamber (1) to enter from a lower pipeline (10) of the double-layer corridor pipeline (4);
(2) the air entering the lower pipeline (10) firstly passes through the stabilizer (5) in the lower pipeline (10), the stabilizer (5) positioned in the lower pipeline (10) can adjust the temperature of the air to a certain degree, then the adjusted air enters the evaporator (2), the evaporator (2) can cool the air adjusted by the stabilizer (5) to-25-30 ℃, the temperature of the air is reduced through cooling, therefore, water vapor can be condensed into water when meeting cold, the condensed water enters the water collecting device (6) through the recovery pipeline (8) to be recycled, the relative humidity in the air is higher, the low-temperature air acted by the evaporator (2) enters the stabilizer (5) of the upper pipeline (9), the stabilizer (5) in the upper pipeline (9) enables the temperature of the air to be raised to 0 ℃, and then the air is raised to 25 ℃ again under the action of the condenser (3);
(3) the temperature of the cold air is increased, so that the moisture content in unit air is increased, the relative humidity of the air after temperature rise is reduced, the air meets the requirement of ultra-dry air, the ultra-dry air enters the material drying chamber (1) through the circulating air pump (11), and the ultra-dry air can dry an object to be dried;
(4) the ultra-dry air dries the object to be dried, the moisture on the object to be dried enters the ultra-dry air under the existence of moisture difference, the relative humidity of the ultra-dry air is increased, and the air with the increased relative humidity enters the lower pipeline (10) again;
(5) the stabilizer (5) in the lower pipeline (10) can stabilize air with high relative humidity entering the lower pipeline (10), then the stabilized air enters the evaporator (2), the steam device can cool the air stabilized by the stabilizer (5), so that the water content in unit air is reduced, water vapor can be condensed into water to flow out, the condensed water can enter the external water collecting device (6) through the recovery pipeline (8) to be collected, the temperature of the air entering the upper pipeline (9) is reduced to-25 ℃ through the evaporator (2), and then the cooled water enters the pressure stabilizer in the upper pipeline (9) again to be primarily heated;
(6) the air after the preliminary temperature rise is heated to 25 ℃ through the condenser (3) again, so that the air forms super-dry air again, the air enters the material drying chamber (1) through the action of the circulating air pump (11) again, the articles to be dried are dried again, the relative humidity of the air is increased again, the air with the increased relative humidity enters the lower pipeline (10) again, and the air is circulated for about 15 minutes in a reciprocating way, so that the circulating air in the material drying chamber (1) forms the super-dry air with the relative humidity reduced to below 10%;
(7) and after the drying of the dried object is finished, closing the evaporator (2), the condenser (3), the compressor (7), the stabilizer (5) and the circulating air pump (11), opening the material drying chamber (1), and taking out the dried object.
8. A closed ultra dry air drying system according to claim 5, wherein the condenser (3) is provided in plurality as required.
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| CN201911248491.0A CN110849089A (en) | 2019-12-09 | 2019-12-09 | Closed super dry air drying system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911248491.0A CN110849089A (en) | 2019-12-09 | 2019-12-09 | Closed super dry air drying system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165997A (en) * | 2021-12-21 | 2022-03-11 | 牟桠楠 | Intelligent drying equipment based on big data and control method thereof |
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