GB1384838A - Freeze drying method and apparatus - Google Patents
Freeze drying method and apparatusInfo
- Publication number
- GB1384838A GB1384838A GB2702873A GB2702873A GB1384838A GB 1384838 A GB1384838 A GB 1384838A GB 2702873 A GB2702873 A GB 2702873A GB 2702873 A GB2702873 A GB 2702873A GB 1384838 A GB1384838 A GB 1384838A
- Authority
- GB
- United Kingdom
- Prior art keywords
- product
- compartment
- conveyers
- pressure
- drying
- 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
- F26B5/06—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 the process involving freezing
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
1384838 Freeze drying SMITHERM INDUSTRIES Inc 6 June 1973 [31 July 1972] 27028/73 Heading F4G A method of freeze drying a product comprises the steps of introducing the product to be dried into a zone maintained at a pressure which is less than atmospheric but is sufficiently high to suppress vaporization of volatile constituents of the product, spreading the product into a layer, freezing the product in the layer, reducing the pressure on the frozen product to a pressure below 4À6 mm. of mercury, and heating the product to effect sublimation of water from the product and thereby reduce its moisture content. Apparatus for carrying out the method comprises a freezing compartment 28 and a drying compartment 30 through which the product is passed in succession by means of endless belt conveyers 32, 34, 36. Product is fed on to the conveyers through a valve controlled main conduit 58 and branch conduits 61, 62, 64 and headers 72, 74, 76 and is frozen to the conveyers in compartment 28 by freezers 82 to which a coolant, such as lithium, is circulated. The pressure in compartment 28 is maintained at the required level by water vapour from a reservoir 98 in which the water is heated by a resistance heater 104. The frozen product is passed through apertures 50, in a partition 26 into drying compartment 30 which is maintained at a pressure below 4À6 mm. mercury by a vacuum pump connected thereto by way of line 188. Drying is completed by sublimation of the water using radiant heaters or radiators 106, 108, the final product passing via a main conduit 158 to hoppers 160, 162. The conveyers are advanced by rolls 44, 46, the latter being cooled by a refrigerant. Instead of a reservoir 98 being used to supply water vapour in compartment 28, steam jets may be used. The vacuum pump is connected to the line 188 by way of a condenser for removing moisture therein.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27655672A | 1972-07-31 | 1972-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1384838A true GB1384838A (en) | 1975-02-26 |
Family
ID=23057106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2702873A Expired GB1384838A (en) | 1972-07-31 | 1973-06-06 | Freeze drying method and apparatus |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US3740860A (en) |
| JP (1) | JPS5432181B2 (en) |
| AR (1) | AR198847A1 (en) |
| AU (1) | AU454555B2 (en) |
| BR (1) | BR7304809D0 (en) |
| CA (1) | CA974445A (en) |
| CH (1) | CH561888A5 (en) |
| DE (1) | DE2337549B2 (en) |
| FR (1) | FR2198611A5 (en) |
| GB (1) | GB1384838A (en) |
| IT (1) | IT989775B (en) |
| NL (1) | NL7308805A (en) |
| PH (1) | PH9954A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111373217A (en) * | 2017-11-22 | 2020-07-03 | Ima生命北美股份有限公司 | Spray freeze drying on substrates |
| WO2022159571A1 (en) * | 2021-01-22 | 2022-07-28 | Ima Life North America Inc. | Drying chamber for a bulk freeze drying system |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3991772A (en) * | 1973-01-05 | 1976-11-16 | Smitherm Industries, Inc. | Methods of and apparatus for expanding tobacco |
| JPS49115927A (en) * | 1973-03-10 | 1974-11-06 | ||
| JPS5630397B2 (en) * | 1973-04-18 | 1981-07-14 | ||
| US4033048A (en) * | 1976-01-12 | 1977-07-05 | Clayton Van Ike | Freeze drying apparatus |
| JPS55112980A (en) * | 1979-02-26 | 1980-09-01 | Nippon Oxygen Co Ltd | Freezing drier |
| FR2508993A1 (en) * | 1981-07-01 | 1983-01-07 | Usifroid | DOUBLE SERIES DISPLACEMENT LYOPHILIZATION SYSTEM |
| JPS5976858A (en) * | 1982-10-22 | 1984-05-02 | Hitachi Metals Ltd | Fe-cr-al alloy |
| DE3706415A1 (en) * | 1987-02-27 | 1988-09-08 | Thyssen Edelstahlwerke Ag | SEMI-FINISHED FERRITIC STEEL PRODUCT AND ITS USE |
| JPS6411957A (en) * | 1987-07-04 | 1989-01-17 | Kawasaki Steel Co | Manufacture of stainless steel having high-temperature oxidation film excellent in corrosion resistance |
| DK159488A (en) * | 1988-03-23 | 1989-09-24 | Danske Sukkerfab | Apparatus for stretching of reinforcement lock strips |
| IT1250360B (en) * | 1991-12-11 | 1995-04-07 | CONTINUOUS FLOW LYOPHILIZATION EQUIPMENT. | |
| DE69505243T2 (en) * | 1994-12-27 | 1999-05-20 | Koninklijke Philips Electronics N.V., Eindhoven | METHOD FOR WASHING AND DRYING LARGE AMOUNTS OF DISCRETE COMPONENTS |
| WO1996022496A1 (en) * | 1995-01-20 | 1996-07-25 | Freezedry Specialties, Inc. | Freeze dryer |
| DE19808408C1 (en) * | 1998-02-27 | 1999-06-24 | Bernd Dreisbach | Vacuum dry cabinet |
| WO2003006904A1 (en) * | 2001-07-09 | 2003-01-23 | Perera, Horacio, Eduardo | Apparatus and process for freezing produce |
| MXPA06012614A (en) * | 2004-05-01 | 2007-07-18 | Agres Ltd | Drying process and apparatus. |
| NZ550563A (en) * | 2006-10-16 | 2009-01-31 | Agres Ltd | Improvements in spray freeze drying |
| ES2347397B1 (en) * | 2007-05-17 | 2011-09-29 | Obschestvo S Ogranichennoy Otvetstvennostyu | INSTALLATION FOR VACUUM DRYING. |
| JP5927066B2 (en) * | 2012-07-05 | 2016-05-25 | 株式会社協真エンジニアリング | Drying apparatus and drying method |
| EP3392584B1 (en) | 2017-04-21 | 2019-12-18 | GEA Lyophil GmbH | A freeze dryer and a method for inducing nucleation in products |
| US20220125078A1 (en) * | 2018-10-19 | 2022-04-28 | Harvest Right, LLC | Freeze Drying Methods |
| US11874060B2 (en) * | 2020-11-16 | 2024-01-16 | Sublime Stericeuticals Corporation | Continuous throughput lyophilizer-powder filler within a sterile boundary |
| CN113154851B (en) * | 2021-05-07 | 2022-07-22 | 湖南康琪壹佰生物科技有限公司 | Health food capable of conditioning blood fat, blood sugar and blood pressure and preparation method thereof |
-
1972
- 1972-07-31 US US00276556A patent/US3740860A/en not_active Expired - Lifetime
-
1973
- 1973-06-05 CA CA173,281A patent/CA974445A/en not_active Expired
- 1973-06-06 GB GB2702873A patent/GB1384838A/en not_active Expired
- 1973-06-08 AU AU56713/73A patent/AU454555B2/en not_active Expired
- 1973-06-25 NL NL7308805A patent/NL7308805A/xx unknown
- 1973-06-27 PH PH14775*A patent/PH9954A/en unknown
- 1973-06-27 AR AR248764A patent/AR198847A1/en active
- 1973-06-29 BR BR4809/73A patent/BR7304809D0/en unknown
- 1973-07-06 IT IT51289/73A patent/IT989775B/en active
- 1973-07-20 DE DE19732337549 patent/DE2337549B2/en active Granted
- 1973-07-24 CH CH1080373A patent/CH561888A5/xx not_active IP Right Cessation
- 1973-07-24 FR FR7327105A patent/FR2198611A5/fr not_active Expired
- 1973-07-31 JP JP8551073A patent/JPS5432181B2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111373217A (en) * | 2017-11-22 | 2020-07-03 | Ima生命北美股份有限公司 | Spray freeze drying on substrates |
| WO2022159571A1 (en) * | 2021-01-22 | 2022-07-28 | Ima Life North America Inc. | Drying chamber for a bulk freeze drying system |
Also Published As
| Publication number | Publication date |
|---|---|
| AR198847A1 (en) | 1974-07-24 |
| DE2337549B2 (en) | 1976-07-15 |
| BR7304809D0 (en) | 1973-10-25 |
| PH9954A (en) | 1976-06-14 |
| AU454555B2 (en) | 1974-10-31 |
| NL7308805A (en) | 1974-02-04 |
| JPS5432181B2 (en) | 1979-10-12 |
| IT989775B (en) | 1975-06-10 |
| JPS4945456A (en) | 1974-04-30 |
| CH561888A5 (en) | 1975-05-15 |
| US3740860A (en) | 1973-06-26 |
| CA974445A (en) | 1975-09-16 |
| DE2337549A1 (en) | 1974-02-21 |
| AU5671373A (en) | 1974-10-31 |
| FR2198611A5 (en) | 1974-03-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |