CN107782124A - A kind of hot wind and microwave dries conjuncted method - Google Patents
A kind of hot wind and microwave dries conjuncted method Download PDFInfo
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- CN107782124A CN107782124A CN201710834093.1A CN201710834093A CN107782124A CN 107782124 A CN107782124 A CN 107782124A CN 201710834093 A CN201710834093 A CN 201710834093A CN 107782124 A CN107782124 A CN 107782124A
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- drying
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- guipure
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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 for supplying or controlling air or other gases for drying solid materials or objects
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N12/00—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
- A23N12/08—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts for drying or roasting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
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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)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention discloses a kind of hot wind and microwave and dries conjuncted method.Material first carries out heated-air drying, microwave drying is carried out again, specially material is equably layered on guipure by feeder, guipure uses stainless steel cloth, moved by transmission device dragging in drying machine, drying machine is made up of some units, each unit hot blast independent loops, tail gas is discharged by special wet-emitting blower, hot gas completes the process of passage of heat and mass through the guipure for being paved with material from lower to upper or from top to bottom, takes away material moisture, guipure slowly moves, the speed of service is freely adjusted according to temperature of charge, and dried finished product is continuously fallen into collector.A kind of hot wind and microwave of the present invention dries conjuncted method, using the new technology of convective airflow drying and vacuum microwave combining drying, the nutritional ingredient and color and luster of the product of acquisition keep preferable, production cost is far below vacuum freeze drying product again, has the characteristics of with short production cycle, cost is low, good product quality.
Description
Technical field
The present invention relates to a kind of hot wind and microwave to dry conjuncted method, belongs to drying technology field.
Background technology
Hot air circulation drying is that the mount of using heat reaches dry purpose from outside gradual internally heat transfer one, and not only speed is slow,
Heated also uneven, relative mass is not so good as microwave drying.Microwave drying is worked using the dielectric loss principle of microwave, it
Heating is internal and surface almost while heated that so not only heating is fast, while also more uniform.Quality is also relatively easy to control,
But the investment of equipment is big.
Fruits and vegetables water content is very high, and harvest time is short, and the rainy weather in annual fruits and vegetables maturation later stage makes a large amount of fruits dehiscent fruit occur
Phenomenon, make aggravation of rotting of going mouldy after harvest due to that can not dry in time, cause great economic loss to fruits and vegetables industry, be
Limit one of bottleneck of fruits and vegetables industry development.
Microwave drying is worked using the dielectric loss principle of microwave, and its heating is that internal and surface is almost simultaneously
Heating, so not only heating is fast, while also more uniform.Quality is also relatively easy to control, but the investment of equipment is big, its not only speed
It hurry up, steady quality, while it also has the effect to sterilize.Recirculation drying stove uses high-temperature fibre and light energy conservation refractory brick
Form high-quality the furnace linings for energy-saving, heating element heater is high temperature resistance alloy strip or silk, reliable and durable, temperature uniformly without dead angle, its
Heat gradually internally conducts heat from outside, reaches dry purpose, not only speed is slow, and relative mass is not so good as microwave drying, still
The investment of equipment is relatively low, and power consumption is also relatively larger.Hot wind and microwave, which dries conjuncted technology, just makes its advantage fully combine, bad
Gesture has carried out complementation.
The content of the invention
In view of this, the invention provides a kind of hot wind and microwave to dry conjuncted method, using convective airflow drying and vacuum
The new technology of microwave combining drying, the nutritional ingredient and color and luster of the product of acquisition keep preferable, and production cost is far below vacuum again
Lyophilisation product, there is the characteristics of with short production cycle, cost is low, good product quality.
The present invention solves above-mentioned technical problem by following technological means, and a kind of hot wind and microwave dries conjuncted method, material
Heated-air drying is first carried out, is 60~70 DEG C in temperature, semi-finished product are obtained under 1~3m/s of wind speed, the moisture of semi-finished product is 30
~40%, semi-finished product are then subjected to microwave drying, the power density of microwave is 1~3W/g, obtains finished product, and the moisture of finished product contains
Measure as 2~5%, specially material is equably layered on guipure by feeder, and guipure uses 12-60 mesh stainless steel cloths, by passing
Dynamic device dragging is moved in drying machine, and drying machine is made up of some units, and each unit hot blast independent loops, tail gas is by special
Wet-emitting blower is discharged, and hot gas completes heat with entering with mass transfer through the guipure that is paved with material from lower to upper or from top to bottom
Journey, material moisture is taken away, guipure is slowly moved, and the speed of service is freely adjusted according to temperature of charge, and dried finished product continuously falls
Enter in collector.
It is 50-85 DEG C that drying temperature is controlled during the microwave drying.
Material after the microwave drying carries out the measurement of moisture by moisture transducer.
, can be first by one using first low temperature heated-air drying method of the invention is particularly suitable for the drying of vegetable and fruit
Divide water drying, because heated-air drying equipment investment is low, the investment of equipment can be reduced, and the efficiency of microwave drying can be improved,
Using microwave drying, energy consumption is low, efficiency high and the basic not damaged of nutrition to fruit and vegetable.
The beneficial effects of the invention are as follows：Using the new technology of convective airflow drying and vacuum microwave combining drying, acquisition
The nutritional ingredient and color and luster of product keep preferable, and production cost is far below vacuum freeze drying product again, with it is with short production cycle,
The characteristics of cost is low, good product quality.
Embodiment
Below with reference to specific embodiment, the present invention is described in detail, a kind of hot wind and microwave drying connection of the present embodiment
Body method, material first carry out heated-air drying, are 60~70 DEG C in temperature, semi-finished product, the water of semi-finished product are obtained under 1~3m/s of wind speed
It is 30~40% to divide content, and semi-finished product then are carried out into microwave drying, and the power density of microwave is 1~3W/g, obtains finished product, into
The moisture of product is 2~5%, and specially material is equably layered on guipure by feeder, and guipure uses 12-60 mesh stainless steels
Silk screen, being moved by transmission device dragging in drying machine, drying machine is made up of some units, each unit hot blast independent loops,
Tail gas is discharged by special wet-emitting blower, and hot gas completes heat and and matter through the guipure for being paved with material from lower to upper or from top to bottom
The process transmitted is measured, takes away material moisture, guipure is slowly moved, and the speed of service is freely adjusted according to temperature of charge, dried
Finished product is continuously fallen into collector.
It is 50-85 DEG C that drying temperature is controlled during the microwave drying.
Material after the microwave drying carries out the measurement of moisture by moisture transducer.
Embodiment 1
A kind of hot wind and microwave dries conjuncted method, and material first carries out heated-air drying, is 65 DEG C in temperature, under wind speed 2m/s
To semi-finished product, the moisture of semi-finished product is 35%, semi-finished product then is carried out into microwave drying, the power density of microwave is
1.3W/g, finished product is obtained, the moisture of finished product is 3.2%, and specially material is equably layered on guipure by feeder, guipure
Using 35 mesh stainless steel cloths, moved by transmission device dragging in drying machine, drying machine is made up of some units, each unit
Hot blast independent loops, tail gas are discharged by special wet-emitting blower, and hot gas is from lower to upper or from top to bottom through the guipure for being paved with material
Heat and the process with mass transfer are completed, takes away material moisture, guipure slowly moves, and the speed of service is free according to temperature of charge
Regulation, dried finished product are continuously fallen into collector.
It is 65 DEG C that drying temperature is controlled during the microwave drying.
Material after the microwave drying carries out the measurement of moisture by moisture transducer.
Embodiment 2
A kind of hot wind and microwave dries conjuncted method, and material first carries out heated-air drying, is 63 DEG C in temperature, under wind speed 2.2m/s
Semi-finished product are obtained, the moisture of semi-finished product is 35%, semi-finished product then is carried out into microwave drying, the power density of microwave is
2.1W/g, finished product is obtained, the moisture of finished product is 3.5%, and specially material is equably layered on guipure by feeder, guipure
Using 40 mesh stainless steel cloths, moved by transmission device dragging in drying machine, drying machine is made up of some units, each unit
Hot blast independent loops, tail gas are discharged by special wet-emitting blower, and hot gas is from lower to upper or from top to bottom through the guipure for being paved with material
Heat and the process with mass transfer are completed, takes away material moisture, guipure slowly moves, and the speed of service is free according to temperature of charge
Regulation, dried finished product are continuously fallen into collector.
It is 65 DEG C that drying temperature is controlled during the microwave drying.
Material after the microwave drying carries out the measurement of moisture by moisture transducer.
Embodiment 3
A kind of hot wind and microwave dries conjuncted method, and material first carries out heated-air drying, is 68 DEG C in temperature, under wind speed 2.8m/s
Semi-finished product are obtained, the moisture of semi-finished product is 35%, semi-finished product then is carried out into microwave drying, the power density of microwave is
2.5W/g, finished product is obtained, the moisture of finished product is 4.5%, and specially material is equably layered on guipure by feeder, guipure
Using 50 mesh stainless steel cloths, moved by transmission device dragging in drying machine, drying machine is made up of some units, each unit
Hot blast independent loops, tail gas are discharged by special wet-emitting blower, and hot gas is from lower to upper or from top to bottom through the guipure for being paved with material
Heat and the process with mass transfer are completed, takes away material moisture, guipure slowly moves, and the speed of service is free according to temperature of charge
Regulation, dried finished product are continuously fallen into collector.
It is 75 DEG C that drying temperature is controlled during the microwave drying.
Material after the microwave drying carries out the measurement of moisture by moisture transducer.
Embodiment 4
In order to improve the quality of jujube dried product, on the basis of segmentation heated-air drying and microwave intermittently drying, using height
Warm the combined drying mode Drying Dates of wind+low temperature hot blast+microwave, study under different drying modes the drying property of jujube and
Quality.As a result show:The drying time of combined drying mode shortens more than 11% than segmentation heated-air drying；It is segmented heated-air drying
Jujube internal temperature is higher than surface temperature, and the jujube temperature elevation amplitude of microwave intermittently drying is big, and rate of drying is high.300g jujubes
At 55 DEG C of heated-air drying 9h (transfer point moisture content of drying base≤66%), then 50 DEG C of heated-air drying 12h (drying mode IV) again, then
The microwave drying 12min under 119W, interval 4min, (transfer point moisture content of drying base≤99%) is repeated 7 times, is dried under the conditions of this
The total Vitamin C content highest of jujube, brown stain coefficient is relatively low, and rehydration effect is best, and energy consumption is relatively low, is that preferably jujube is micro-
Ripple-hot air combined dry combination.Microwave-hot air combined drying is the preferable technical method for being adapted to jujube to dry.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this
Among the right of invention.
Claims (3)
1. a kind of hot wind and microwave dries conjuncted method, it is characterised in that material first carries out heated-air drying, is 60~70 in temperature
DEG C, semi-finished product are obtained under 1~3m/s of wind speed, the moisture of semi-finished product is 30~40%, then does semi-finished product progress microwave
Dry, the power density of microwave is 1~3W/g, obtains finished product, the moisture of finished product is 2~5%, and specially material is by feeder
Equably it is layered on guipure, guipure uses 12-60 mesh stainless steel cloths, is moved, dried in drying machine by transmission device dragging
Machine is made up of some units, and each unit hot blast independent loops, tail gas is discharged by special wet-emitting blower, hot gas from lower to upper or by
On down complete heat and process with mass transfer through the guipure for being paved with material, take away material moisture, guipure slowly moves,
The speed of service is freely adjusted according to temperature of charge, and dried finished product is continuously fallen into collector.
2. a kind of hot wind and microwave according to claim 1 dries conjuncted method, it is characterised in that：The microwave drying time control
Drying temperature processed is 50-85 DEG C.
3. a kind of hot wind and microwave according to claim 1 dries conjuncted method, it is characterised in that：After the microwave drying
Material carries out the measurement of moisture by moisture transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710834093.1A CN107782124A (en) | 2017-09-15 | 2017-09-15 | A kind of hot wind and microwave dries conjuncted method |
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| CN201710834093.1A CN107782124A (en) | 2017-09-15 | 2017-09-15 | A kind of hot wind and microwave dries conjuncted method |
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| CN107782124A true CN107782124A (en) | 2018-03-09 |
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| CN201710834093.1A Pending CN107782124A (en) | 2017-09-15 | 2017-09-15 | A kind of hot wind and microwave dries conjuncted method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266969A (en) * | 2018-04-18 | 2018-07-10 | 北京工商大学 | A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying |
| CN109289007A (en) * | 2018-10-09 | 2019-02-01 | 浙江医药高等专科学校 | Fresh-cut processing method of turmeric pieces |
| CN112190139A (en) * | 2020-10-09 | 2021-01-08 | 广东美的厨房电器制造有限公司 | Control method of cooking device, cooking device and readable storage medium |
| CN112539605A (en) * | 2020-12-09 | 2021-03-23 | 湖北省农业科学院农产品加工与核农技术研究所 | High-efficiency and high-quality rhubarb drying method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101785574A (en) * | 2010-03-17 | 2010-07-28 | 王大帅 | Device for drying fruits and vegetables by microwave drying and hot-air pre-heating |
| CN102767940A (en) * | 2011-05-05 | 2012-11-07 | 金伟均 | Belt dryer |
| WO2015083182A2 (en) * | 2013-11-03 | 2015-06-11 | Tidke Vaibhav | A process for drying fresh produce so as to retain natural colour and active ingredients |
| CN206413708U (en) * | 2017-01-07 | 2017-08-18 | 雅安职业技术学院 | A kind of equipment of microwave combination heated-air drying dried apple slices |
-
2017
- 2017-09-15 CN CN201710834093.1A patent/CN107782124A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101785574A (en) * | 2010-03-17 | 2010-07-28 | 王大帅 | Device for drying fruits and vegetables by microwave drying and hot-air pre-heating |
| CN102767940A (en) * | 2011-05-05 | 2012-11-07 | 金伟均 | Belt dryer |
| WO2015083182A2 (en) * | 2013-11-03 | 2015-06-11 | Tidke Vaibhav | A process for drying fresh produce so as to retain natural colour and active ingredients |
| CN206413708U (en) * | 2017-01-07 | 2017-08-18 | 雅安职业技术学院 | A kind of equipment of microwave combination heated-air drying dried apple slices |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266969A (en) * | 2018-04-18 | 2018-07-10 | 北京工商大学 | A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying |
| CN109289007A (en) * | 2018-10-09 | 2019-02-01 | 浙江医药高等专科学校 | Fresh-cut processing method of turmeric pieces |
| CN112190139A (en) * | 2020-10-09 | 2021-01-08 | 广东美的厨房电器制造有限公司 | Control method of cooking device, cooking device and readable storage medium |
| CN112539605A (en) * | 2020-12-09 | 2021-03-23 | 湖北省农业科学院农产品加工与核农技术研究所 | High-efficiency and high-quality rhubarb drying method |
| CN112539605B (en) * | 2020-12-09 | 2022-04-19 | 湖北省农业科学院农产品加工与核农技术研究所 | High-efficiency and high-quality rhubarb drying method |
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Application publication date: 20180309 |
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