GB1221502A - Vacuum dryer shelf temperature control - Google Patents
Vacuum dryer shelf temperature controlInfo
- Publication number
- GB1221502A GB1221502A GB1664369A GB1664369A GB1221502A GB 1221502 A GB1221502 A GB 1221502A GB 1664369 A GB1664369 A GB 1664369A GB 1664369 A GB1664369 A GB 1664369A GB 1221502 A GB1221502 A GB 1221502A
- Authority
- GB
- United Kingdom
- Prior art keywords
- manifold
- shelves
- outlet conduit
- heated fluid
- conduit
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/044—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum for drying materials in a batch operation in an enclosure having a plurality of shelves which may be heated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
1,221,502. Vacuum drying apparatus. HULL CORP. 31 March, 1969, No. 16643/69. Heading F4G. In vacuum drying apparatus of the type in which vertically spaced hollow shelves 28 in a casing have heated fluid flowing through them, the fluid is fed to and received from the shelves 28 by two vertical manifolds 44, 46 communicating with the shelves inside the casing, having an adjustable valve 52 for connecting either one manifold with the outlet conduit 54 of a heated fluid source and the other manifold with the return conduit 56 or vice versa. An electric solenoid valve 52 has two positions determined by the setting of switch 60 which is controlled by timer 64. In one position the outlet conduit 54 of the heated fluid source is connected to manifold 44; the fluid flows through the shelves 28 along a sinuous path and returns through manifold 46 to the return conduit 56. In the second position the outlet conduit 54 is connected to manifold 46 and the fluid flows in the opposite direction through the shelves 28. In a second embodiment (Fig. 5, not shown), the outlet conduit (74) is connected to the top of manifold (44) and the return conduit (76) to the bottom of manifold (46) by rotatable circular valves (70), (72). The valves are ganged together and by rotating clockwise through 90 degrees the connections are reversed and the fluid flows through the shelves in the opposite direction. In a freeze drying process, the heated fluid may be preceded by a refrigerant which freezes the material on the shelves before drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1664369A GB1221502A (en) | 1969-03-31 | 1969-03-31 | Vacuum dryer shelf temperature control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1664369A GB1221502A (en) | 1969-03-31 | 1969-03-31 | Vacuum dryer shelf temperature control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1221502A true GB1221502A (en) | 1971-02-03 |
Family
ID=10081021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1664369A Expired GB1221502A (en) | 1969-03-31 | 1969-03-31 | Vacuum dryer shelf temperature control |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1221502A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140373382A1 (en) * | 2013-06-25 | 2014-12-25 | Millrock Technology Inc. | Using surface heat flux measurement to monitor and control a freeze drying process |
| CN113587570A (en) * | 2021-08-10 | 2021-11-02 | 宁波市计量测试研究院(宁波新材料检验检测中心) | Full-automatic calibration device for calibrating vacuum drying oven |
| US11486640B2 (en) | 2015-09-22 | 2022-11-01 | Millrock Technology, Inc. | Apparatus and method for developing freeze drying protocols using small batches of product |
-
1969
- 1969-03-31 GB GB1664369A patent/GB1221502A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140373382A1 (en) * | 2013-06-25 | 2014-12-25 | Millrock Technology Inc. | Using surface heat flux measurement to monitor and control a freeze drying process |
| US9121637B2 (en) * | 2013-06-25 | 2015-09-01 | Millrock Technology Inc. | Using surface heat flux measurement to monitor and control a freeze drying process |
| US11486640B2 (en) | 2015-09-22 | 2022-11-01 | Millrock Technology, Inc. | Apparatus and method for developing freeze drying protocols using small batches of product |
| CN113587570A (en) * | 2021-08-10 | 2021-11-02 | 宁波市计量测试研究院(宁波新材料检验检测中心) | Full-automatic calibration device for calibrating vacuum drying oven |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |