EP3403037B1 - System zur automatischen extraktion von kaltgasen in einem mit einem kryogenen fluid arbeitenden gefrierschrank - Google Patents

System zur automatischen extraktion von kaltgasen in einem mit einem kryogenen fluid arbeitenden gefrierschrank Download PDF

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Publication number
EP3403037B1
EP3403037B1 EP17702424.7A EP17702424A EP3403037B1 EP 3403037 B1 EP3403037 B1 EP 3403037B1 EP 17702424 A EP17702424 A EP 17702424A EP 3403037 B1 EP3403037 B1 EP 3403037B1
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EP
European Patent Office
Prior art keywords
cabinet
extraction
tube
enclosure
cryogenic fluid
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.)
Active
Application number
EP17702424.7A
Other languages
English (en)
French (fr)
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EP3403037A1 (de
Inventor
Didier Pathier
Christian Reymond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP3403037A1 publication Critical patent/EP3403037A1/de
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Publication of EP3403037B1 publication Critical patent/EP3403037B1/de
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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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/005—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces in cold rooms
    • 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
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
    • F25D3/102—Stationary cabinets
    • 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
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/12—Devices using other cold materials; Devices using cold-storage bodies using solidified gases, e.g. carbon-dioxide snow
    • F25D3/122—Stationary cabinets

Definitions

  • the present invention relates to the field of cabinets used for freezing or storing food, medical or biological products, using a cryogenic gas as a cooling fluid, and it is more particularly interested in the gas extraction system equipping such cabinets. and which is an important element.
  • the gases are actively circulated.
  • an active extraction (fan, turbine, etc.) which allows the gases to be sucked outwards.
  • an active extraction is installed.
  • the latter consists of a fan installed in the tube extraction, a power supply and a control system which triggers its operation when necessary. All of this has a significant cost in the total cost of the freezing installation and when possible, an installation without active extraction will always be preferred by the production site.
  • a cabinet according to the preamble of claim 1 attached is known from the document US4344291A .
  • the document FR2979697A1 describes a cryogenic fluid refrigeration tunnel comprising inlet and outlet shutters.
  • the present invention seeks to propose a technical solution which aims to overcome the problem of cryogenic cabinet door seals, at a negligible cost.
  • the proposed solution includes a shutter (shutter whose cost is negligible), located at the entrance to the extraction tube in the freezing cabinet, flap extending towards the inside of the cabinet, and whose shape, the position and orientation make it possible to take advantage of the turbulence created by the fans.
  • a shutter shutter whose cost is negligible
  • flap extending towards the inside of the cabinet, and whose shape, the position and orientation make it possible to take advantage of the turbulence created by the fans.
  • the turbulence created is partly deflected by the shutter towards the extraction tube, thus pushing the gases towards the outside of the enclosure and thus creating a depression inside the freezing enclosure.
  • This shutter will be chosen according to the type of fans used in the cabinet and their direction (clockwise or counterclockwise) of operation.
  • this shutter must be studied to disrupt the freezing process of the cabinet as little as possible (studied for example by modeling or quite simply by tests on a real cabinet), in particular to check that the shutter provides the desired effect. which is to create a depression inside the cabinet, so that the shutter does not disturb the air circulation too much in the cell and that it does not degrade the heat transfer coefficient in the freezing cabinet.

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  • 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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Claims (1)

  1. Schrank zum Tiefkühlen oder Lagern von Lebensmitteln, medizinischen oder biologischen Produkten, der ein kryogenes Fluid, das in einer geschlossenen Kammer des Schranks verdampft, als Kühlfluid verwendet, Schrank des Typs:
    - der mit einem oder mehreren Konvektionsgebläsen versehen ist, das(die) in der Kammer des Schranks angeordnet ist(sind) und geeignet ist(sind), die Luft innerhalb des Schranks umzuwälzen und so zu dem Wärmeaustausch beizutragen, der darin stattfindet;
    - und der mit einem System zur Extraktion der Gase versehen ist, die in der Kammer des Schranks aufgrund des Verdampfens des kryogenen Fluids gebildet werden, wobei das Extraktionssystem ein Extraktionsrohr (1) umfasst, das an eine Wand des Schranks angeschlossen ist und die Kammer mit der Außenumgebung verbindet;
    dadurch gekennzeichnet, dass er eine Klappe (2) umfasst, die an der Wand, am Einlass des Extraktionsrohrs in den Schrank, angeordnet ist und sich zum Innenraum des Schranks hin erstreckt, Klappe, deren Form, Position und Ausrichtung es ermöglichen, alle oder einen Teil der Turbulenzen (3) die von dem oder den Konvektionsgebläsen erzeugt werden, zu dem Extraktionsrohr hin umzuleiten.
EP17702424.7A 2016-01-13 2017-01-10 System zur automatischen extraktion von kaltgasen in einem mit einem kryogenen fluid arbeitenden gefrierschrank Active EP3403037B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1650248A FR3046668B1 (fr) 2016-01-13 2016-01-13 Systeme permettant l'extraction automatique des gaz froids dans une armoire de surgelation fonctionnant avec un fluide cryogenique
PCT/FR2017/050050 WO2017121951A1 (fr) 2016-01-13 2017-01-10 Système permettant l'extraction automatique des gaz froids dans une armoire de surgélation fonctionnant avec un fluide cryogenique

Publications (2)

Publication Number Publication Date
EP3403037A1 EP3403037A1 (de) 2018-11-21
EP3403037B1 true EP3403037B1 (de) 2023-10-18

Family

ID=55806530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17702424.7A Active EP3403037B1 (de) 2016-01-13 2017-01-10 System zur automatischen extraktion von kaltgasen in einem mit einem kryogenen fluid arbeitenden gefrierschrank

Country Status (6)

Country Link
US (1) US20190017738A1 (de)
EP (1) EP3403037B1 (de)
ES (1) ES2965038T3 (de)
FR (1) FR3046668B1 (de)
PT (1) PT3403037T (de)
WO (1) WO2017121951A1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344291A (en) * 1980-04-28 1982-08-17 Liquid Carbonic Corporation Cryogenic cabinet freezer
US4759198A (en) * 1985-11-06 1988-07-26 Takigen Manufacturing Co. Ltd. Ventilator for refrigerator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1654343A (en) * 1924-11-24 1927-12-27 Charles A Moore Precooling structure
US1832874A (en) * 1930-03-19 1931-11-24 Charles A Moore Air conditioning device for cold storage rooms
FR2979697B1 (fr) * 2011-09-07 2013-09-27 Air Liquide Systeme d'amelioration de l'equilibrage des gaz froids dans un tunnel de surgelation par la mise en oeuvre de zones tampon et de volets interieurs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344291A (en) * 1980-04-28 1982-08-17 Liquid Carbonic Corporation Cryogenic cabinet freezer
US4759198A (en) * 1985-11-06 1988-07-26 Takigen Manufacturing Co. Ltd. Ventilator for refrigerator

Also Published As

Publication number Publication date
FR3046668B1 (fr) 2018-02-16
US20190017738A1 (en) 2019-01-17
WO2017121951A1 (fr) 2017-07-20
ES2965038T3 (es) 2024-04-10
EP3403037A1 (de) 2018-11-21
PT3403037T (pt) 2023-12-07
FR3046668A1 (fr) 2017-07-14

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