CN104296505A - Radiant energy vacuum drying device - Google Patents
Radiant energy vacuum drying device Download PDFInfo
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- CN104296505A CN104296505A CN201410536893.1A CN201410536893A CN104296505A CN 104296505 A CN104296505 A CN 104296505A CN 201410536893 A CN201410536893 A CN 201410536893A CN 104296505 A CN104296505 A CN 104296505A
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- radiant energy
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Abstract
The invention discloses a radiant energy vacuum drying device. The radiant energy vacuum drying device comprises radiant energy heating devices and a vacuum drying chamber, wherein the radiant energy heating devices are installed in the vacuum drying chamber and fixed above materials to be dried, or simultaneously fixed above and below the materials to be dried. The radiant energy heating devices emit electromagnetic waves during working, the wavelength of the waveband of the electromagnetic waves is 1-4 microns, and the distance between the radiant energy heating devices and the vacuum drying chamber is 50-230mm. The radiant energy vacuum drying device is capable of accurately controlling material process temperatures so as to guarantee heat sensitivity components free from being damaged; the radiant energy vacuum drying device can work under high vacuum, electricity discharge danger faults are absent, and the vacuum degree can range from -0.098MPa to -0.1MPa so that material drying temperatures are further reduced, and heat sensitivity components are guaranteed; existence of a metal structure is allowed, and a way is paved for industrialized large-scale equipment; electromagnetic leakage hidden danger is absent, electromagnetic waves in the waveband do not harm human bodies, and the radiant energy vacuum drying device need not special safeguards.
Description
Technical field
The present invention relates to one and penetrate energy Minton dryer.
Background technology
In many fields such as food, pharmacy, biology, chemical industry, the drying of thermal sensitivity product is a committed step.How to realize fast, energy-saving drying ensures that its active ingredient, color, local flavor are not damaged simultaneously, is the problem of dry area research always.
For thermal sensitivity product, existing dry means have several like this: 1, vacuum drying chamber, 2, microwave vacuum dryer, 3, vacuum far-infrared dryer.
Any drying is all the double process of heat transfer and mass transfer.Below several method is compared.
A vacuum drying chamber (comprising batch and continuous vacuum crawler belt), one adopts heating tube or heating plate for supplying heat structure, and under certain vacuum degree, (be generally-0.07 ~-0.09MPa), the material be opposite in stainless steel charging tray carries out heat drying.The heat of heating tube or plate passes to stainless steel charging tray by conduction, and plate transfers heat to material again.After material obtains heat, moisture progressively evaporates, and through the heating of certain hour, material realizes dehydrating.Because heat transfer efficiency is low, after particularly material surface is heated, heat in internal batch transmission slowly, causes arid cycle very long.For Chinese medical concrete, a collection of normal needs of vacuum drying oven 10 ~ 30 hours.
B micro-wave vacuum is the new technology that developed recently gets up, and heats under vacuum conditions with microwave.Because microwave heating is dielectric heating, that is: have the feature of penetrability heating, be no longer dependent on tradition heat transfer type from outward appearance to inner essence, therefore rate of drying promotes greatly.Same for extract dry, the time shortens to 40 ~ 100min usually.With the author in microwave regime work eleven experience for many years, though microwave has advantage, bring shortcoming equally: 1, microwave drying can only detect material skin temperature usually, and is difficult to detect internal temperature.Under microwave action, temperature of charge is normally interior high, outer low, and top layer displays temperature is 60 DEG C, and internal layer temperature has reached 90 ~ 100 DEG C.Be easy to like this inside quality deterioration occurs, the problems such as active ingredient destruction, this has been found that at Chinese medicine and plant extracts field.2, microwave is difficult to work under a high vacuum.When vacuum reaches more than-0.098MPa, microwave and easily produce glow discharge, so just cannot work on, also can cause device damage.And be familiar with dry technical staff's understanding, vacuum is higher, and the boiling point of water is lower, is more suitable for heat sensitive material drying.3, microwave does not allow to there is too much metal structure in hothouse.As being not suitable in micro-wave oven using metal soupspoon the same with canister, metal structure can make Electrical Discharge Machine greatly increase under microwave field.Plastic structural part intensity is very low.Obviously, the internal structure of industrial large equipment is difficult to rely on plastic member.4, heating using microwave uniformity is not good.Due to the inherent characteristics of microwave field, heating using microwave completely evenly, therefore can not require that material keeps motion when drying, could obtain good homogeneous heating degree.5, microwave has electromagnetic leakage hidden danger.The strong manyfold of industry large equipment power ratio household microwave oven, equipment is processed equipment local damage in slightly not in place or use and leakage just may be caused to exceed standard.This is a potential danger for a line direct labor.
C another kind method adopts vacuum to combine with far infrared to carry out drying, and its principle is indoor in vacuum drying, adopts Heated by Far-Infrared Radiation plate, heats and then reach drying purpose to material.According to medical definition, wavelength is called far infrared from 5 ~ 1000 microns infrared, through the degree of depth of the organic substance surface 0.1 ~ 1mm such as food, cannot can only transmit inwards again during FAR INFRARED HEATING.Although therefore Far-infrared Heating can be very fast to the heating of material top layer, heat is still very slow in internal delivery, therefore for having certain thickness material, arid cycle is still very slow, same for Chinese medical concrete, far infrared vacuum drying, the cycle is usually at 5 ~ 10h.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, providing one to penetrate can Minton dryer.Mainly for the drying of the various thermal sensitivity products such as food, medicine, flavouring, biological products, heavy chemicals.
In order to achieve the above object, the present invention adopts following technical scheme:
One is penetrated can Minton dryer, comprises that penetrate can heater and vacuum drying cabinet, described in penetrate and can be installed on vacuum drying indoor by heater, and be fixed on the top of material to be dried, or be fixed on above and below material to be dried simultaneously.
Described penetrate can heater work time emission wavelength be the electromagnetic wave of 1 ~ 4 micron waveband, the electromagnetic wave (hereinafter referred to as penetrating energy) of this wave band has obviously different from far infrared, its penetration depth will apparently higher than far infrared, far infrared can only penetrate material top layer 0.1 ~ 1mm degree of depth such as food, and penetrates and can be penetrated into 5 ~ 15mm degree of depth.This is to a certain degree being provided with the feature of similar microwave, can penetrate heating object material top layer, reaches the feature that deep layer carries out heating, and makes heating object material inside and outside be heated simultaneously and realize rapid draing.Same for extract dry, arid cycle shortens to 80 ~ 150min.Though be slightly longer than microwave, substantially reduce than the cycle of conventional drying process.
Described distance of penetrating energy heater and material to be dried is 50 ~ 230mm.Distance too closely can cause heating uneven, apart from too far away cause again drying efficiency reduce and equipment volume bigger than normal.
One or more sets infrared temperature sensors are installed, to detect temperature of charge in equipment.When can heat owing to penetrating, temperature of charge is outer height, interior low, and what therefore infrared temperature sensor detected is its maximum temperature, by controlling its maximum temperature point, can realize quality control.Temperature signal feeds back to control system, and system regulates the above-mentioned power penetrating energy heater automatically, with the ceiling temperature making temperature of charge be no more than setting, thus reaches object to heat but not overheated.
Compared with prior art, the present invention has following outstanding substantive distinguishing features and significant advantage:
Apparatus of the present invention can accurately control material process temperature, thus ensure that heat-sensitive ingredients is not damaged, and can work under a high vacuum, without putting a dangerous event.Vacuum from-0.098MPa arrival-0.1MPa, thus can reduce dry materials temperature further, ensures heat-sensitive ingredients.Permission metal structure exists, for industrialization main equipment is paved the way; Without electromagnetic leakage hidden danger, this wave band electromagnetic wave can not damage human body, and device does not need special protection.
Accompanying drawing explanation
Fig. 1 is that the present invention penetrates energy Minton dryer structural representation.
Fig. 2 is the structural representation of another embodiment of the present invention.
Detailed description of the invention
embodiment 1
As shown in Figure 1, one is penetrated can Minton dryer, comprises that penetrate can heater 1 and vacuum drying cabinet 2, described in penetrate and can be installed in vacuum drying cabinet 2 by heater 1, and be fixed on the top of material to be dried 3.Described penetrate can heater 1 when working emission wavelength be the electromagnetic wave of 1 ~ 4 micron waveband, described in penetrate heater 1 to be 80mm with the distance of material to be dried 3.
The present embodiment device carries out drying to Chinese medicine ointment, and the traditional Chinese medicine liquid of same amount is dried to powder agglomates shape, and common conventional heating methods needs 24 hours, within 3 hours, can be dried to above-mentioned same effect with this device.
embodiment 2
As shown in Figure 2, the present embodiment is substantially the same manner as Example 1, and difference is, penetrating and can be fixed on above and below material to be dried 3 by heater 1 simultaneously, be 200mm with the distance of material to be dried 3.
Claims (2)
1. penetrate energy Minton dryer for one kind, it is characterized in that, comprise and penetrate energy heater (1) and vacuum drying cabinet (2), described penetrating can be installed in vacuum drying cabinet (2) by heater (1), and be fixed on the top of material to be dried (3), or be fixed on above and below material to be dried (3) simultaneously.
2. according to claim 1 penetrating can Minton dryer, it is characterized in that, described penetrate can heater (1) work time emission wavelength be the electromagnetic wave of 1 ~ 4 micron waveband, described in penetrate heater (1) to be 50 ~ 230mm with the distance of material to be dried (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536893.1A CN104296505A (en) | 2014-10-13 | 2014-10-13 | Radiant energy vacuum drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536893.1A CN104296505A (en) | 2014-10-13 | 2014-10-13 | Radiant energy vacuum drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104296505A true CN104296505A (en) | 2015-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410536893.1A Pending CN104296505A (en) | 2014-10-13 | 2014-10-13 | Radiant energy vacuum drying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105146553A (en) * | 2015-10-16 | 2015-12-16 | 江南大学 | Method for preparing semi-dry conditioning shredded beef by combination of medium-short wave infrared vacuum drying and flexible sterilization |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19609695A1 (en) * | 1996-02-10 | 1997-08-21 | Fzm Ges Fuer Produktentwicklun | Combined microwave and vacuum drying method esp. for drying temperature-sensitive household ware |
| CN2620843Y (en) * | 2003-04-05 | 2004-06-16 | 吴琦 | Microwave vacuum drier for extractive material |
| CN102179340A (en) * | 2011-04-25 | 2011-09-14 | 张家港市佳龙真空浸漆设备制造厂 | Vacuum pressure paint dipping cluster equipment with improved drying device |
| CN202254738U (en) * | 2011-09-07 | 2012-05-30 | 天津科技大学 | Efficient microwave vacuum drying machine |
| CN102906521A (en) * | 2010-05-26 | 2013-01-30 | 本田技研工业株式会社 | Drying furnace and drying method |
-
2014
- 2014-10-13 CN CN201410536893.1A patent/CN104296505A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19609695A1 (en) * | 1996-02-10 | 1997-08-21 | Fzm Ges Fuer Produktentwicklun | Combined microwave and vacuum drying method esp. for drying temperature-sensitive household ware |
| CN2620843Y (en) * | 2003-04-05 | 2004-06-16 | 吴琦 | Microwave vacuum drier for extractive material |
| CN102906521A (en) * | 2010-05-26 | 2013-01-30 | 本田技研工业株式会社 | Drying furnace and drying method |
| CN102179340A (en) * | 2011-04-25 | 2011-09-14 | 张家港市佳龙真空浸漆设备制造厂 | Vacuum pressure paint dipping cluster equipment with improved drying device |
| CN202254738U (en) * | 2011-09-07 | 2012-05-30 | 天津科技大学 | Efficient microwave vacuum drying machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105146553A (en) * | 2015-10-16 | 2015-12-16 | 江南大学 | Method for preparing semi-dry conditioning shredded beef by combination of medium-short wave infrared vacuum drying and flexible sterilization |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150121 |