CN102721269A - Liquid nitrogen refrigeration micro-wave heating vacuum drier - Google Patents
Liquid nitrogen refrigeration micro-wave heating vacuum drier Download PDFInfo
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- CN102721269A CN102721269A CN2012102378824A CN201210237882A CN102721269A CN 102721269 A CN102721269 A CN 102721269A CN 2012102378824 A CN2012102378824 A CN 2012102378824A CN 201210237882 A CN201210237882 A CN 201210237882A CN 102721269 A CN102721269 A CN 102721269A
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Abstract
The invention relates to the technical field of vacuum freeze drying, and provides a liquid nitrogen refrigeration micro-wave heating vacuum drier, which includes a refrigeration drying part connected with a water circulation vacuum pump and a liquid nitrogen refrigeration system, as well as a PLC main-control system connected with the water circulation vacuum pump, the liquid nitrogen refrigeration system and the refrigeration drying part, wherein the refrigeration drying part includes a sealed freeze-dry box; a rotating main shaft is vertically arranged in the freeze-dry box; the rotating main shaft is connected with a plurality layers of freeze-dry pallets from the top down; a micro-wave heating system is arranged above each layer of freeze-dry pallet; and the micro-wave heating system include microwave generators. The liquid nitrogen refrigeration micro-wave heating vacuum drier provided by the invention adopts the liquid nitrogen refrigeration manner and the microwave rotary heating manner, effectively enlarges the refrigeration temperature reach of the freeze-dry box, improves the freeze-dry efficiency, and reduces the freeze-dry time and energy consumption; besides, the water circulation vacuum pump adopted by the liquid nitrogen refrigeration micro-wave heating vacuum drier requires no water catching system, and effectively controls the degree of vacuum of the freeze-dry box, thereby avoiding the problems such as high energy consumption caused by the adoption of the water catching system.
Description
Technical field:
The present invention relates to the Vacuum Freezing & Drying Technology field, relate in particular to a kind of liquid nitrogen frozen heating using microwave vacuum drier.
Background technology:
Vacuum Freezing & Drying Technology utilization distillation principle dry matter; Be widely used in the food and medicine manufacture field; This is because vacuum freeze drying can prevent the physics and chemistry of dry matter and the sex change of biology aspect to the full extent; So the development prospect of vacuum freeze drier is had an optimistic view of by people day by day.Vacuum freeze drier comprises eight systems, is respectively freezing, circulation, vacuum, electric, hydraulic pressure, pneumatic, water ring, SIP/CIP.
At present, traditional freeze dryer of use is main with compressor refrigeration system.Like the patent No. is the disclosed a kind of vacuum freeze drier of 200610008269.X, a kind of exactly vacuum freeze drier that adopts compressor cooling.Though this vacuum freeze drier can be used in the food and medicine production field, owing to use electrical heating, compressor cooling; Freon is as cold-producing medium, and the freezing problems that exist of this vacuum freeze drier are little like temperature range; Heat exchange efficiency is not high; Operating cost is high, and probability of failure is big, and the corrective maintenance cost is high.
The patent No. is 201020223133.2; The patent of invention of being announced has proposed to use the refrigeration system of liquid nitrogen frozen as vacuum freeze drier, can effectively improve temperature controlling range and heat exchange efficiency; But the vacuum drying design concept of this liquid nitrogen frozen also is based on traditional vacuum freeze drier pattern; Only only changed the refrigeration system of freeze dryer, still used electric heating system, the vacuum system that vavuum pump and lobe pump share etc.This has caused liquid nitrogen frozen vacuum drier existing problems, and is high like operating cost, and it is slow and inhomogeneous etc. that goods are heated.
Report microwave freeze-drying technology is arranged in addition, and this technology is the combination of microwave drying and vacuum refrigeration, and idea is novel, but this microwave drying technology does not solve the goods problem such as inhomogeneous of being heated, and operating cost is high, still needs further optimization.
Summary of the invention:
Technical problem to be solved by this invention is to overcome the defective of prior art, and a kind of new use liquid nitrogen frozen is provided, the vacuum freeze drier of heating using microwave, and it is low to have a cost, and it is little to consume energy, product plurality of advantages such as be heated evenly.
Technical problem to be solved by this invention adopts following technical scheme to realize.
A kind of liquid nitrogen frozen heating using microwave vacuum drier; It is characterized in that: comprise the freeze drying part that is connected with water circulating vacuum pump and liquid nitrogen frozen system, also comprise the PLC master control system that connects said water circulating vacuum pump, liquid nitrogen frozen system and freeze drying part; Said freeze drying partly comprises the freeze drying box of sealing; Vertically be provided with rotary main shaft in the freeze drying box; Rotary main shaft connects multilayer freeze-drying pallet from top to bottom, and every layer of freeze-drying pallet top is provided with microwave heating system, and microwave heating system includes microwave generator.
Said freeze-drying tray bottom is shaped on male and fomale(M&F), can play reflex to the microwave of microwave generator emission, effectively improves the uniformity of microwave to the goods heating, improves drying efficiency.
Said microwave generator is provided with one for every layer, or every layer is provided with two or more.
Said freeze-drying pallet is fixedly connected with rotary main shaft, and said microwave heating system and freeze drying box are static relatively; Perhaps said microwave heating system is fixedly connected with rotary main shaft, and said freeze-drying pallet and freeze drying box are static relatively, so that freeze-drying pallet and microwave heating system relative motion.
Said rotary main shaft upper end is fastened on the outer reducing motor of freeze drying box; Perhaps said rotary main shaft adopts magnetic suspension bearing rotor motion system.
Vacuum drier provided by the invention uses the liquid nitrogen frozen system; Can improve freezing temperature range, improve heat exchange efficiency, after liquid nitrogen charges into the freeze-drying casing; Be gasificated into nitrogen rapidly; And take away the heat in the freeze drying box, and reaching the purpose of cooling, nitrogen is discharged from the unidirectional conducting orifice of nitrogen that freeze drying box is provided with; The microwave heating system of use and the relative motion of freeze-drying pallet can make goods be heated evenly, reduces freeze-drying time, and energy efficient vacuumizes water circulating vacuum pump, need not use water vessel, can effectively control dried case vacuum, reduces power consumption.
The vacuum drier that provides of the present invention, by the PLC master control system to amount of liquid nitrogen, temperature, vacuum, the rotary speed of rotary main shaft realize control automatically.
Beneficial effect of the present invention is: compared with prior art, the present invention adopts liquid nitrogen frozen mode and microwave rotation mode of heating, has effectively increased the cryogenic temperature scope of freeze drying box, improves freeze-drying efficient, reduces freeze-drying time, reduces power consumption; In addition, the water circulating vacuum pump that this drying machine uses need not be provided with water-trapping system, can effectively control dried case vacuum, eliminate use that water-trapping system brought like problems such as the height that consumes energy.
Description of drawings:
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 is the structural representation of the another kind of embodiment of the present invention.
The specific embodiment:
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
Embodiment one
As shown in Figure 1; A kind of liquid nitrogen frozen heating using microwave vacuum drier; Comprise the freeze drying part 4 that is connected with water circulating vacuum pump 1 and liquid nitrogen frozen system 3, also comprise the PLC master control system 2 that connects water circulating vacuum pump 1, liquid nitrogen frozen system 3 and freeze drying part 4; Freeze drying part 4 comprises the freeze drying box 47 of sealing; Vertically be provided with rotary main shaft 44 in the freeze drying box 47; Rotary main shaft 44 connects multilayer freeze-drying pallet 45 from top to bottom; Every layer of freeze-drying pallet 45 top are provided with microwave heating system 42, and microwave heating system 42 includes microwave generator 43, microwave generator 43 every layer be provided with two.
Freeze-drying pallet 45 bottoms are shaped on male and fomale(M&F) 46, can play reflex to the microwave of microwave generator 43 emissions, effectively improve the uniformity of microwave to the goods heating, improve drying efficiency; Freeze-drying pallet 45 is fixedly connected with rotary main shaft 44; Microwave heating system 42 is static relatively with freeze drying box 47; So that freeze-drying pallet 45 produces relative motion with microwave heating system 42, rotary main shaft 44 upper ends are fastened on the reducing motor 41 outside the freeze drying box 47, and are driven by reducing motor 41.
Embodiment two
As shown in Figure 2; A kind of liquid nitrogen frozen heating using microwave vacuum drier; Comprise the freeze drying part 4 that is connected with water circulating vacuum pump 1 and liquid nitrogen frozen system 3, also comprise the PLC master control system 2 that connects water circulating vacuum pump 1, liquid nitrogen frozen system 3 and freeze drying part 4; Freeze drying part 4 comprises the freeze drying box 47 of sealing; Vertically be provided with rotary main shaft 44 in the freeze drying box 47; Rotary main shaft 44 connects multilayer freeze-drying pallet 45 from top to bottom; Every layer of freeze-drying pallet 45 top are provided with microwave heating system 42, and microwave heating system 42 includes microwave generator 43, microwave generator 43 every layer be provided with one.
Freeze-drying pallet 45 bottoms are shaped on male and fomale(M&F) 46, can play reflex to the microwave of microwave generator 43 emissions, effectively improve the uniformity of microwave to the goods heating, improve drying efficiency; Microwave heating system 42 is fixedly connected with rotary main shaft 44, and freeze-drying pallet 45 is static relatively with freeze drying box 47, so that freeze-drying pallet 45 produces relative motion with microwave heating system 42, rotary main shaft 44 adopts magnetic suspension bearing rotor motion system.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (7)
1. liquid nitrogen frozen heating using microwave vacuum drier; It is characterized in that: comprise the freeze drying part that is connected with water circulating vacuum pump and liquid nitrogen frozen system, also comprise the PLC master control system that connects said water circulating vacuum pump, liquid nitrogen frozen system and freeze drying part;
Said freeze drying partly comprises the freeze drying box of sealing; Vertically be provided with rotary main shaft in the freeze drying box; Rotary main shaft connects multilayer freeze-drying pallet from top to bottom, and every layer of freeze-drying pallet top is provided with microwave heating system, and microwave heating system includes microwave generator.
2. liquid nitrogen frozen heating using microwave vacuum drier according to claim 1 is characterized in that: said freeze-drying tray bottom is shaped on male and fomale(M&F).
3. liquid nitrogen frozen heating using microwave vacuum drier according to claim 1 is characterized in that: said microwave generator is provided with one for every layer, or every layer is provided with two or more.
4. liquid nitrogen frozen heating using microwave vacuum drier according to claim 1 is characterized in that: said freeze-drying pallet is fixedly connected with rotary main shaft, and said microwave heating system and freeze drying box are static relatively.
5. liquid nitrogen frozen heating using microwave vacuum drier according to claim 1, it is characterized in that: said microwave heating system is fixedly connected with rotary main shaft, and said freeze-drying pallet and freeze drying box are static relatively.
6. liquid nitrogen frozen heating using microwave vacuum drier according to claim 1 is characterized in that: said rotary main shaft upper end is fastened on the outer reducing motor of freeze drying box.
7. liquid nitrogen frozen heating using microwave vacuum drier according to claim 1 is characterized in that: said rotary main shaft adopts magnetic suspension bearing rotor motion system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012102378824A CN102721269A (en) | 2012-07-11 | 2012-07-11 | Liquid nitrogen refrigeration micro-wave heating vacuum drier |
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| CN2012102378824A CN102721269A (en) | 2012-07-11 | 2012-07-11 | Liquid nitrogen refrigeration micro-wave heating vacuum drier |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090652A (en) * | 2012-12-24 | 2013-05-08 | 张家港市金太阳帽业有限公司 | Automatic rotation wool flock cap drying device |
| CN105333143A (en) * | 2014-08-13 | 2016-02-17 | 上海共和真空技术有限公司 | Sealing ring of freeze-drying box for freeze dryer |
| CN110313574A (en) * | 2019-07-05 | 2019-10-11 | 合肥市福客多快餐食品有限公司 | A kind of food-dewatering device |
| CN111578648A (en) * | 2019-02-19 | 2020-08-25 | 江苏食品药品职业技术学院 | Microwave heating type vacuum freeze dryer with multiple oscillation modes |
| CN111854375A (en) * | 2020-07-27 | 2020-10-30 | 北京金辉景新节能科技有限公司 | Vacuum microwave dewatering equipment |
| CN113758079A (en) * | 2021-09-01 | 2021-12-07 | 广州韩秀科技有限公司 | Capillary liquid nitrogen pipeline iterative cycle water catching device and using method thereof |
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| US20020174562A1 (en) * | 2001-05-23 | 2002-11-28 | Pearcy Timothy E. | Microwave lyophilization method |
| CN1737477A (en) * | 2004-08-17 | 2006-02-22 | 韩鸿兴 | Shelf rotary type refrigeration drying apparatus |
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Patent Citations (7)
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| US20020174562A1 (en) * | 2001-05-23 | 2002-11-28 | Pearcy Timothy E. | Microwave lyophilization method |
| CN1737477A (en) * | 2004-08-17 | 2006-02-22 | 韩鸿兴 | Shelf rotary type refrigeration drying apparatus |
| JP3955923B1 (en) * | 2006-07-06 | 2007-08-08 | 高知県 | Vacuum, drying / concentration equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090652A (en) * | 2012-12-24 | 2013-05-08 | 张家港市金太阳帽业有限公司 | Automatic rotation wool flock cap drying device |
| CN105333143A (en) * | 2014-08-13 | 2016-02-17 | 上海共和真空技术有限公司 | Sealing ring of freeze-drying box for freeze dryer |
| CN111578648A (en) * | 2019-02-19 | 2020-08-25 | 江苏食品药品职业技术学院 | Microwave heating type vacuum freeze dryer with multiple oscillation modes |
| CN110313574A (en) * | 2019-07-05 | 2019-10-11 | 合肥市福客多快餐食品有限公司 | A kind of food-dewatering device |
| CN111854375A (en) * | 2020-07-27 | 2020-10-30 | 北京金辉景新节能科技有限公司 | Vacuum microwave dewatering equipment |
| CN113758079A (en) * | 2021-09-01 | 2021-12-07 | 广州韩秀科技有限公司 | Capillary liquid nitrogen pipeline iterative cycle water catching device and using method thereof |
| CN113758079B (en) * | 2021-09-01 | 2023-03-21 | 广州韩秀科技有限公司 | Capillary liquid nitrogen pipeline iterative cycle water catching device and using method thereof |
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Application publication date: 20121010 |