CN1219184C - Convective vacuum refrigerating drier - Google Patents
Convective vacuum refrigerating drier Download PDFInfo
- Publication number
- CN1219184C CN1219184C CN 03152861 CN03152861A CN1219184C CN 1219184 C CN1219184 C CN 1219184C CN 03152861 CN03152861 CN 03152861 CN 03152861 A CN03152861 A CN 03152861A CN 1219184 C CN1219184 C CN 1219184C
- Authority
- CN
- China
- Prior art keywords
- drying chamber
- refrigerating
- freeze drying
- chamber
- cryogenic media
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The present invention discloses a convection vacuum refrigerating and drying device used for removing dissolvent in porous materials, which comprises a low-temperature medium pot and a refrigerating and drying chamber, wherein a low-temperature medium is stored in the low-temperature medium pot, and the refrigerating and drying chamber is provided with a chamber cover and a vacuum extraction opening connected with vacuum extractor. The refrigerating and drying chamber is provided with a dry gas inlet pipe and is arranged in the low-temperature medium pot. The convection vacuum refrigerating and drying device can lead the dry gas into dried blocks after introducing the technical measure of the dry gas inlet pipe, which increases the refrigerating and drying efficiency of block materials, effectively shortens the refrigerating and drying time and reduces the energy consumption. According to the mass transfer basic principle, the convection vacuum refrigerating and drying device accelerates the dissolvent diffusion in the refrigerating and drying chamber, reduces the partial pressure of the dissolvent in the chamber and accelerates the dissolvent sublimation speed by gas flow.
Description
One, technical field
The present invention relates to a kind of drying device, relate in particular to the convection type vacuum freezing drying device that is used to contain the volatile materials drying.
Two, background technology
In the existing Freeze Drying Technique, dry usually material all is a water-containing materials, and dry purpose is the moisture of removing wherein.Indoor in freeze drying, low temperature realizes that by refrigerating compressor material to be dried is loose shape and places on the shelf, is beneficial to the distillation of moisture.In dry run, also can carry out suitable heating to material by shelf.But when preparation polymer blocks porous body material, dry material is solvent-laden lump material, can not change its profile physical dimension by its placement on the shelf, and dry purpose is the volatile solvent of removing wherein.Because the character of solvent and the different in kind of water, so should not carry out drying with drying process identical when removing moisture.
Three, technology contents
The invention provides a kind of convection type vacuum freezing drying device that helps improving freeze drying efficient.
The present invention adopts following technical scheme to solve above-mentioned technical problem, a kind of convection type vacuum freezing drying device that is used for removing the porous material solvent, form by cryogenic media jar 1 and freeze drying chamber 10, contain cryogenic media 13 in cryogenic media jar 1, on freeze drying chamber 10, be provided with chamber cap 9, on freeze drying chamber 10, also be provided with vacuum pumping opening 7, vacuum pumping opening 7 is connected in vacuum extractor, it is characterized in that being provided with dry gas air inlet pipe 6 on freeze drying chamber 10, freeze drying chamber 10 is located in the cryogenic media jar 1.
Compared with prior art, the present invention has following advantage:
1. after the present invention introduces the technical measures of dry gas air inlet pipe, can feed dry gas, improve block materials freeze drying efficient, shorten sublimation drying effectively, reduce energy resource consumption the block that is dried.The present invention uses the mass transfer basic principle, and by gas flow, the diffusion of solvent in the accelerated freezing drying chamber has reduced the dividing potential drop of indoor solvent, has accelerated the rate of sublimation of solvent, studies show that, shortens time more than 1/3rd than simple vacuum freeze drying.The present invention also places these technical measures of block below that are dried with the outlet side of dry gas air inlet pipe, more helps forming convection current, further strengthens dry.
2. the present invention does not use the mechanical type refrigerating plant, but realizes low temperature with cryogenic media.In the reality, can be according to polymer and solvent different, select multiple cooling medium neatly, the minimum temperature of refrigerating chamber is with selecting for use cooling medium to change.As when adopting liquid nitrogen to be cooling medium, can reach the low temperature below-100 ℃, be significantly less than the minimum temperature that freeze drier commonly used can reach, heat transfer block of the present invention can cool off in the cryogenic media jar, by lifting device it is mentioned then, freeze drying chamber is lowered the temperature, so freeze drying chamber is by heat transfer block and cryogenic media are carried out indirect heat exchange, its variations in temperature is controlled by heat transfer block, controls cryodesiccated temperature thus.
3. the thermal resistance piece then can make the variations in temperature of freeze drying chamber ease up, and it is with after heat transfer block combines, and is more favourable to the freeze drying temperature controlling.
Four, description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is the structural representation of another embodiment of the present invention.
Five, specific embodiments
A kind of convection type vacuum freezing drying device that is used for removing the porous material solvent, form by cryogenic media jar 1 and freeze drying chamber 10, contain cryogenic media 13 in cryogenic media jar 1, on freeze drying chamber 10, be provided with chamber cap 9, on freeze drying chamber 10, also be provided with vacuum pumping opening 7, vacuum pumping opening 7 is connected in vacuum extractor, on freeze drying chamber 10, be provided with dry gas air inlet pipe 6, freeze drying chamber 10 is located in the cryogenic media jar 1, in freeze drying chamber 10, be provided with dry carriage 12, the outlet side of dry gas air inlet pipe 6 is positioned at the below of dry carriage 12, freeze drying chamber 10 is positioned at the top of this cryogenic media jar 1, in cryogenic media jar 1 and the perimeter that is positioned at freeze drying chamber 10 be provided with heat transfer block 2, this heat transfer block 2 is connected in lifting device.This lifting device can be by lifting rod 3 gears that are connected in heat transfer block 2, tooth bar, form with motor, lifting rod is connected in tooth bar, gear links to each other with motor output shaft, the motor driven gear rotation, gear moves up and down by the rack drives heat transfer block 2 with its engagement, this lifting device also can adopt hand hoisting device, be about to heat transfer block and be connected in lifting rod 3, when the user promotes or reduce lifting rod 3, heat transfer block 2 also moves up and down thereupon, present embodiment also is provided with thermal resistance piece 4 in the outer ancient piece of jade, round, flat and with a hole in its centre bottom of freeze drying chamber 10, heat transfer block 2 can have polylith bar shaped heat transfer block to constitute and with it according to arranging with the outside similar shapes of freeze drying chamber, also heat transfer block 2 can be designed to the heat conduction cover, its size should make it put like a cork in that freeze drying is outdoor, unloads.
Claims (4)
1. convection type vacuum freezing drying device that is used for removing the porous material solvent, form by cryogenic media jar (1) and freeze drying chamber (10), contain cryogenic media (13) in cryogenic media jar (1), on freeze drying chamber (10), be provided with chamber cap (9), on freeze drying chamber (10), also be provided with vacuum pumping opening (7), vacuum pumping opening (7) is connected in vacuum extractor, it is characterized in that being provided with dry gas air inlet pipe (6) on freeze drying chamber (10), freeze drying chamber (10) is located in the cryogenic media jar (1).
2. convection type vacuum freezing drying device according to claim 1 is characterized in that being provided with dry carriage (12) in freeze drying chamber (10), the outlet side of dry gas air inlet pipe (6) is positioned at the below of dry carriage (12).
3. convection type vacuum freezing drying device according to claim 1 and 2, it is characterized in that freeze drying chamber (10) is positioned at the top of this cryogenic media jar (1), in cryogenic media jar (1) and the perimeter that is positioned at freeze drying chamber (10) be provided with heat transfer block (2), this heat transfer block (2) is connected in lifting device.
4. convection type vacuum freezing drying device according to claim 3 is characterized in that being provided with thermal resistance piece (4) in the outer ancient piece of jade, round, flat and with a hole in its centre bottom of freeze drying chamber (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03152861 CN1219184C (en) | 2003-08-28 | 2003-08-28 | Convective vacuum refrigerating drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03152861 CN1219184C (en) | 2003-08-28 | 2003-08-28 | Convective vacuum refrigerating drier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1490582A CN1490582A (en) | 2004-04-21 |
| CN1219184C true CN1219184C (en) | 2005-09-14 |
Family
ID=34156594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03152861 Expired - Fee Related CN1219184C (en) | 2003-08-28 | 2003-08-28 | Convective vacuum refrigerating drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1219184C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123206A (en) * | 2013-03-21 | 2013-05-29 | 楚天科技股份有限公司 | Freeze dryer |
| CN106397360A (en) * | 2015-07-29 | 2017-02-15 | 广西梧州制药（集团）股份有限公司 | Applications of tert-butanol in freeze drying process of dianhydrodulcitol or composition thereof |
| CN106389402B (en) * | 2015-07-29 | 2020-08-18 | 广西梧州制药（集团）股份有限公司 | Application of convection heat transfer mode in preparation process of dianhydrogalactitol freeze-dried powder |
| CN106403507B (en) * | 2015-07-29 | 2019-03-05 | 广西梧州制药（集团）股份有限公司 | A kind of application of steam heating in freeze-drying |
| CN106403510B (en) * | 2015-07-29 | 2019-02-19 | 广西梧州制药（集团）股份有限公司 | A kind of convection current is total to application of the microwave heat transfer type in being dried under reduced pressure |
| WO2017075554A1 (en) | 2015-10-29 | 2017-05-04 | Golfetto Michael | Methods freeze drying and composite materials |
| CN107166884A (en) * | 2017-07-19 | 2017-09-15 | 唐晓磊 | Vacuum freeze drier |
| CN113814054B (en) * | 2021-08-19 | 2022-09-30 | 河海大学 | Multistage acceleration type freeze-drying grinding instrument |
-
2003
- 2003-08-28 CN CN 03152861 patent/CN1219184C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1490582A (en) | 2004-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1219184C (en) | Convective vacuum refrigerating drier | |
| CN104457142B (en) | The intermittent vacuum freeze drying plant of a kind of greenery based food | |
| CN215638381U (en) | Layered vacuum freeze dryer | |
| CN207035701U (en) | A kind of vacuum freeze drier | |
| CN201653076U (en) | Intermittent wood veneer dryer | |
| CN1228602C (en) | Freezing drier of porous polymer materials | |
| CN2655144Y (en) | Convection vacuum refrigerating drying device | |
| CN2655145Y (en) | Refrigerating drying device for polymer porous material | |
| CN204254771U (en) | Dehumidifier | |
| CN204170949U (en) | Agricultural seed impurity elimination drying cycle device | |
| CN2416463Y (en) | Vacuum freezing dryer | |
| CN101046350A (en) | Vacuum freeze drier | |
| CN202211144U (en) | Net-cage-type fruit and vegetable drying box | |
| CN216869064U (en) | Vacuum freeze drying box capable of avoiding moisture accumulation | |
| CN203314010U (en) | Tea freeze-dryer | |
| CN2539947Y (en) | Vacuum heat flow low temp. dewatering drying fresh-keeping device | |
| CN2586115Y (en) | Refrigerating/heating distributor for cooling dry storehouse | |
| CN1737477A (en) | Shelf rotary type refrigeration drying apparatus | |
| CN202032841U (en) | Vacuum dryer | |
| CN2795761Y (en) | Vacuum freezing dry device | |
| CN107822175B (en) | Idesia drying device | |
| CN2720366Y (en) | Shelf-rotating type refrigerating-drying apparatus | |
| CN207079188U (en) | Process units for the konjaku glucomannan aerogel material of oil spilling reparation | |
| CN214792267U (en) | Dry forming device is used in peach gum production | |
| CN2706725Y (en) | Vacuum refrigerating mixing drying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050914 Termination date: 20160828 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |