EP2154455A1 - Konvektionssperre - Google Patents
Konvektionssperre Download PDFInfo
- Publication number
- EP2154455A1 EP2154455A1 EP08161793A EP08161793A EP2154455A1 EP 2154455 A1 EP2154455 A1 EP 2154455A1 EP 08161793 A EP08161793 A EP 08161793A EP 08161793 A EP08161793 A EP 08161793A EP 2154455 A1 EP2154455 A1 EP 2154455A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- freezer
- flaps
- flap
- convection barrier
- individual
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
- F25D23/025—Secondary closures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/04—Self-contained movable devices, e.g. domestic refrigerators specially adapted for storing deep-frozen articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D13/00—Stationary devices, e.g. cold-rooms
- F25D13/02—Stationary devices, e.g. cold-rooms with several cooling compartments, e.g. refrigerated locker systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/04—Charging, supporting, and discharging the articles to be cooled by conveyors
Definitions
- the present invention relates to a convection barrier in accordance with the features of claim 1, and to a freezer comprising such convection barrier.
- Such biological samples can be e.g. blood samples (whole blood, plasma, serum), urine samples, tissue samples, or samples containing cells (e.g. primary cells, stem cells), proteins, DNA, RNA (RNAi, mRNA), or antibodies.
- blood samples whole blood, plasma, serum
- urine samples tissue samples
- samples containing cells e.g. primary cells, stem cells
- proteins e.g. DNA, RNA (RNAi, mRNA), or antibodies.
- the store described therein comprises a system of drawers arranged in a manner so as to form a shelf, which allows robotic access to the biological samples whilst maintaining storage conditions.
- the drawers can be opened individually by the robot pulling the respective drawer outwards so as to allow access to the interior of the drawer where the biological samples are stored.
- each drawer is provided with a block made of styrene in a manner such that the styrene blocks of adjacently arranged drawers abut against one another.
- this does inherently bear the risk that an adjacently arranged drawer is also pulled out although this is not intended and may cause an unwanted temperature rise of the stored samples.
- the small but continuous leakage of cold air (or cold nitrogen) at the butt faces of adjacent styrene blocks is in total comparatively high, since the - 80°C storage compartments do not have front doors permitting a tight separation of the -80°C areas from the -20°C areas in the system.
- Cooling of a complete humidity controlled room for storing biological samples as described above to about -80°C (or below) is generally feasible.
- standard handling devices such as for example robots, usually do not work properly. Therefore, particularly for long-term storage of biological samples, specific -80°C freezers are typically used.
- Such freezers for long term storage of samples usually have a tight and thermally insulating door which separates the environment outside the freezer from the -80°C interior of the freezer.
- a so-called "robotic store” a plurality of such freezers is arranged in a -20°C room as well as a robot for taking the samples out of the respective freezer.
- the robot cannot be arranged in a -80°C environment, since this simply is not economically feasible in such an environment, and in addition maintenance of the robot would be difficult then.
- the robot is arranged outside the freezers in the -20°C environment where it is capable of working properly.
- certain problems may arise.
- the -80°C cooled air flows out of the interior of the freezer while at the same time -20°C air flows from the environment into the interior of the freezer thus leading to a rise in temperature and humidity within the freezer.
- opening and closing of the door results in a negative pressure inside the freezer which makes the door extremely difficult to get opened again until the negative pressure is equalized by inflowing air, e.g. through the sealing of the door of the freezer or through a pressure equilibration valve in the wall of the freezer.
- the convection barrier for a freezer in accordance with the invention comprises:
- the curtain formed by the individual flaps covers the opening which allows access to the freezer, so that the -80°C air may not flow out of the freezer as the door of the freezer is open.
- an actuator such as a robot or a part thereof
- an actuator such as a robot or a part thereof
- only one of the flaps must be opened so as to allow the robot to get access to the sample.
- the arrangement of flaps forming the closed curtain may be achieved by arranging the flaps in a manner such that the butt faces of adjacently arranged flaps form the tight seal when they are in the closed position.
- the arrangement of flaps forming the closed curtain may be achieved by arranging the flaps in a manner sucht the the flaps at least partially overlap and form the tight seal when they are in the closed position (similar to the tiles of a roof).
- the individual flaps are provided with a bi-stable locking means being connected to the actuation means for releasably locking the individual flaps in the closed or in the open position, respectively.
- a bi-stable locking means is connected to the actuation means for releasably locking the individual flaps in the closed or in the open position, respectively.
- the bi-stable locking means comprises a spring, which keeps the flap locked in the open or the closed position with the aid of tensioning forces.
- lips are attached to the individual flaps.
- a lip is attached to at least one of the edges abutting or overlapping the adjacently arranged flap.
- Such lips serve a plurality of purposes. Firstly, they further improve the seal of the interior of the freezer. Secondly, they form a protection for the material the flaps are made of. And thirdly, they simplify the process of opening and closing the flap, since the frictional coefficient of the material the lips are made of is low.
- a particularly suitable material for the lips is Teflon® (polytetrafluoroethylene).
- the individual flaps are made of glass ceramics.
- Glass ceramics is a material which has only a low thermal conductivity.
- the interior of the freezer is additionally protected against the comparatively "high" temperatures (-20°C) outside the interior of the freezer (where the temperature is about -80°C). Since the glass ceramics has a very small thermal expansion coefficient, the temperature gradient perpendicular to the flaps does not cause bending of the flaps which could give rise to a leakage between adjacent flaps
- a further aspect of the invention relates to a freezer comprising a housing and a door, the housing having an opening allowing access to the interior of the freezer through the opening as the door of the freezer is open.
- the freezer further comprises a convection barrier as it has already been described with respect to the various embodiments discussed above.
- the convection barrier is arranged such that the opening allowing access to the interior of the freezer is covered by the flaps of the convection barrier.
- Fig. 1 shows a perspective view of an embodiment of a freezer 1 according to the invention with an embodiment of a convection barrier 2 according to the invention mounted thereto, with the door of the freezer not being shown in Fig. 1 for the sake of simplicity.
- Freezer 1 comprises a housing 10 having an opening 11 at the front side of freezer 1.
- a plurality of compartments are arranged in the interior 12 of freezer 1, in which drawers 3 carrying trays containing the stored samples can be arranged.
- Also shown schematically in Fig. 1 are parts of a robot 4 for automated access to the samples, in particular an actuator 40 for opening and closing the flaps of the convection barrier 2.
- Convection barrier 2 comprises a plurality of individual flaps 20 mounted to an outer frame 21, with flaps 20 being adjacently and abuttingly arranged one above the other so that they form a closed curtain when the flaps 20 are in the closed position.
- flaps 20 are shown in the open position for the sake of better understanding, although in practice usually only one of the flaps 20 is in the open position at a time.
- FIG. 3 detail III of Fig. 2 is shown in an enlarged perspective view.
- one flap 20 is shown in the open position while both the flap 20 arranged immediately below the open flap 20 and the flap 20 arranged immediately above the open flap 20 are in the closed position.
- lips 22 are attached to the flaps 20.
- lips 22 may be made of Teflon® while flaps 20 may be made of glass ceramics such as those offered under the trademark ROBAX® by Schott AG, Mainz, Germany.
- Lips 22 serve various purposes, for example they protect the glass ceramics of flaps 20, they improve the thermal seal provided by the convection barrier 2 and they simplify opening and closing of flaps 20 due to the low frictional coefficient of the Teflon® material.
- Flaps 20 are mounted to holders 23 which themselves are fixed to or are an integral part of an actuation means 24 which allows the flap 20 to be pivoted from the closed position to the open position and vice versa.
- Bi-stable locking means in form of a spring 25 are provided whereby flaps 20 can be locked either in the open or in the closed position.
- one end of spring 25 is attached to a pin 26 which is fixedly mounted to frame 21 while the other end of spring 25 is mounted to actuation means 24.
- actuator 40 comprises a slot 400 and actuation means 24 comprises a pin 240.
- actuator 40 To perform the pivotal movement of flap 20 indicated by double-headed arrows 5 in Fig. 4 , actuator 40 must be moved in a manner to allow pin 240 to enter slot 400 until pin 240 is located at the closed upper end of slot 400. At that time, actuator 40 is to perform a movement essentially corresponding to arrow 5.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Refrigerator Housings (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08161793A EP2154455A1 (de) | 2008-08-05 | 2008-08-05 | Konvektionssperre |
US12/462,219 US20100031685A1 (en) | 2008-08-05 | 2009-07-31 | Convection Barrier |
EP09167047A EP2154456A1 (de) | 2008-08-05 | 2009-08-03 | Konvektionssperre |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08161793A EP2154455A1 (de) | 2008-08-05 | 2008-08-05 | Konvektionssperre |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2154455A1 true EP2154455A1 (de) | 2010-02-17 |
Family
ID=40097142
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08161793A Withdrawn EP2154455A1 (de) | 2008-08-05 | 2008-08-05 | Konvektionssperre |
EP09167047A Withdrawn EP2154456A1 (de) | 2008-08-05 | 2009-08-03 | Konvektionssperre |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09167047A Withdrawn EP2154456A1 (de) | 2008-08-05 | 2009-08-03 | Konvektionssperre |
Country Status (2)
Country | Link |
---|---|
US (1) | US20100031685A1 (de) |
EP (2) | EP2154455A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102401536A (zh) * | 2010-09-09 | 2012-04-04 | Lg电子株式会社 | 用于滑动式门的导轨附接结构和具有导轨附接结构的冰箱 |
CN109373673A (zh) * | 2018-11-06 | 2019-02-22 | 青岛海尔股份有限公司 | 冰箱 |
CN109373672A (zh) * | 2018-11-06 | 2019-02-22 | 青岛海尔股份有限公司 | 冰箱 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9351569B1 (en) | 2013-02-11 | 2016-05-31 | Automated Cells and Equipment, Inc. | Parts supply drawer system for robot assisted manufacturing |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3840148A (en) * | 1972-01-28 | 1974-10-08 | L Fontana | Conveyance equipment which allows the discharge of all or partly of the load by means of an electromagnetic control device |
EP0235824A2 (de) * | 1986-03-07 | 1987-09-09 | EDELHOFF POLYTECHNIK GMBH & CO. | Container, vorzugsweise zur Aufnahme von Müll |
US20030136141A1 (en) * | 2002-01-18 | 2003-07-24 | Kendro Laboratory Products, Inc. | Access tunnel for low temperature freezing systems |
EP1639892A1 (de) * | 2004-09-14 | 2006-03-29 | The Automation Partnership (Cambridge) Limited | Lagersystem mit ultraniedriger Temperatur |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1698509A (en) * | 1927-04-23 | 1929-01-08 | Clarence C Probert | Refrigerator door |
US1901509A (en) * | 1930-03-17 | 1933-03-14 | Automatic Food Machinery Corp | Combination tray heating and refrigerating cabinet |
US2644206A (en) * | 1944-07-17 | 1953-07-07 | Hoffman Max | Awning type window |
US2672246A (en) * | 1948-05-01 | 1954-03-16 | Charles A Barnett | Drawer operating mechanism |
US3127499A (en) * | 1962-09-10 | 1964-03-31 | Market Forge Company | Electrically heated forced air circulation oven |
US3489479A (en) * | 1968-01-02 | 1970-01-13 | Waterloo Ind Inc | Spring open panel |
US3853342A (en) * | 1973-05-14 | 1974-12-10 | R Merrick | Door retainer latch |
US4095861A (en) * | 1977-09-12 | 1978-06-20 | Burroughs Corporation | Dust-proof cart |
US4186790A (en) * | 1977-10-03 | 1980-02-05 | Kerstein Irving J | Access shield for uncovered refrigerated units |
US4296792A (en) * | 1979-02-05 | 1981-10-27 | Bsl Corporation | Transparent reach-through curtain for open refrigerators |
US4310044A (en) * | 1979-05-11 | 1982-01-12 | Schenker Allan M | Access shield for uncovered refrigerated units |
US4288992A (en) * | 1980-02-19 | 1981-09-15 | Eliason Corporation | Curtain for open front freezer or refrigerator |
US4429548A (en) * | 1981-12-07 | 1984-02-07 | Layne Richard C | Cover for refrigerated display cases |
US4500147A (en) * | 1983-03-17 | 1985-02-19 | Reister Richard A | Refrigerator shelf doors |
JPH0260655A (ja) * | 1988-08-26 | 1990-03-01 | Mitsubishi Electric Corp | 血液保存装置 |
US5431490A (en) * | 1993-04-20 | 1995-07-11 | Edwards; Brian E. | Refrigerator/freezer door anti-convection current curtain |
US5758676A (en) * | 1996-08-06 | 1998-06-02 | White Consolidated Industries, Inc. | Support-door hinge |
DK200000090A (da) * | 2000-01-20 | 2001-07-21 | Scanglas As | Kølemøbel |
US20020037697A1 (en) * | 2000-03-16 | 2002-03-28 | Satoshi Tokashiki | Ventilating structure |
DE10208471A1 (de) * | 2002-02-27 | 2003-09-04 | Bsh Bosch Siemens Hausgeraete | Verfahren zur Herstellung eines Haushaltsgeräts sowie ein Haushaltgerät |
US20030168952A1 (en) * | 2002-03-08 | 2003-09-11 | Ching-Yang Huang | Activating device to open all the boxes of tool box |
DE102004016239B4 (de) * | 2004-04-02 | 2009-09-24 | Keba Ag | Schrank mit Schrankkorpus mit mehreren Ablagefächern |
ITRM20080277A1 (it) * | 2008-05-26 | 2009-11-27 | Ind Scaffalature Arredamenti Isa Spa | Sistemi di chiusura per banchi frigoriferi. |
EP2144024A1 (de) * | 2008-07-09 | 2010-01-13 | F. Hoffmann-Roche AG | Konvektionssperre |
-
2008
- 2008-08-05 EP EP08161793A patent/EP2154455A1/de not_active Withdrawn
-
2009
- 2009-07-31 US US12/462,219 patent/US20100031685A1/en not_active Abandoned
- 2009-08-03 EP EP09167047A patent/EP2154456A1/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3840148A (en) * | 1972-01-28 | 1974-10-08 | L Fontana | Conveyance equipment which allows the discharge of all or partly of the load by means of an electromagnetic control device |
EP0235824A2 (de) * | 1986-03-07 | 1987-09-09 | EDELHOFF POLYTECHNIK GMBH & CO. | Container, vorzugsweise zur Aufnahme von Müll |
US20030136141A1 (en) * | 2002-01-18 | 2003-07-24 | Kendro Laboratory Products, Inc. | Access tunnel for low temperature freezing systems |
EP1639892A1 (de) * | 2004-09-14 | 2006-03-29 | The Automation Partnership (Cambridge) Limited | Lagersystem mit ultraniedriger Temperatur |
Non-Patent Citations (2)
Title |
---|
"SELF-STOP COVER MECHANISM", IBM TECHNICAL DISCLOSURE BULLETIN, IBM CORP. NEW YORK, US, vol. 32, no. 3B, 1 August 1989 (1989-08-01), pages 42/43, XP000029931, ISSN: 0018-8689 * |
JUSTIN M. OWEN; PETER WOODS: "Designing and implementing a large- scale automated -80°C archive", INTERNATIONAL JOURNAL OF EPIDEMIOLOGY, vol. 37, 2008, pages I56 - I61 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102401536A (zh) * | 2010-09-09 | 2012-04-04 | Lg电子株式会社 | 用于滑动式门的导轨附接结构和具有导轨附接结构的冰箱 |
CN102401536B (zh) * | 2010-09-09 | 2014-11-12 | Lg电子株式会社 | 用于滑动式门的导轨附接结构和具有导轨附接结构的冰箱 |
CN109373673A (zh) * | 2018-11-06 | 2019-02-22 | 青岛海尔股份有限公司 | 冰箱 |
CN109373672A (zh) * | 2018-11-06 | 2019-02-22 | 青岛海尔股份有限公司 | 冰箱 |
Also Published As
Publication number | Publication date |
---|---|
US20100031685A1 (en) | 2010-02-11 |
EP2154456A1 (de) | 2010-02-17 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
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AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
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AKY | No designation fees paid | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
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STAA | Information on the status of an ep patent application or granted ep patent |
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18D | Application deemed to be withdrawn |
Effective date: 20100818 |