EP3333511A1 - Appareil et procédé de congélation superficielle d'articles - Google Patents

Appareil et procédé de congélation superficielle d'articles Download PDF

Info

Publication number
EP3333511A1
EP3333511A1 EP17172274.7A EP17172274A EP3333511A1 EP 3333511 A1 EP3333511 A1 EP 3333511A1 EP 17172274 A EP17172274 A EP 17172274A EP 3333511 A1 EP3333511 A1 EP 3333511A1
Authority
EP
European Patent Office
Prior art keywords
transport path
articles
conveyor
gas circulation
path
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.)
Pending
Application number
EP17172274.7A
Other languages
German (de)
English (en)
Inventor
Michael D. Newman
Stephen A. Mccormick
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.)
Linde GmbH
Original Assignee
Linde GmbH
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.)
Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of EP3333511A1 publication Critical patent/EP3333511A1/fr
Pending legal-status Critical Current

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
    • F25D13/00—Stationary devices, e.g. cold-rooms
    • F25D13/06—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space
    • F25D13/067—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space with circulation of gaseous cooling fluid
    • 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
    • F25D3/11—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air with conveyors carrying articles to be cooled through the cooling space
    • 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
    • F25D3/127—Stationary devices with conveyors carrying articles to be cooled through the cooling space
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/063—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation with air guides
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0683—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans the fans not of the axial type
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/30—Quick freezing

Definitions

  • the present invention relates to an apparatus for and to a method of crust freezing articles, in particular cylindrically shaped articles, for example cylindrically shaped food articles or food logs.
  • Ready-to-eat (RTE) meat logs are rolls of processed meat which can be, for example, of a diameter from about three inches (7.62 cm) to about six inches (15.24 cm), and up to about 72 inches (1.83 m) in length. After the meat logs are processed, i.e. prepared, they must be sliced for market.
  • RTE Ready-to-eat
  • the cylindrical shape of the meat log makes them difficult to freeze in standard chilling tunnels and, in those situations where the crust is frozen unevenly, the slicing process is less effective and the cutting device becomes clogged with the meat material.
  • An unfrozen meat log impacted by a slicing blade is cut less effectively and less accurately than would result when using a surface frozen meat log.
  • Conventional meat log cutting apparatus upon retraction of the blade for a subsequent cut, cause portions of the product material to adhere to the blade, which portions are displaced about the processing area, while some of the material is retained on the blade surface during the subsequent cut.
  • the top surface of the logs may be over-frozen.
  • an object of the present invention is to overcome the limitations and problems that earlier apparatus and methods have experienced.
  • the present invention basically provides for a product crust freezing apparatus and method, more specifically for a high gas-flow crust freezer apparatus and method, which uniformly freezes the exterior surface crust of at least one article, in particular of at least one cylindrically shaped article, for example of at least one cylindrically shaped food article or food log, such as meat log.
  • an apparatus for crust freezing articles in particular cylindrically shaped articles, for example cylindrically shaped food articles or food logs, on multiple conveyor paths, comprising:
  • the first transport path and the second transport path may be defined by a plurality of independent conveyors, and the divider plate may be positioned between the independent conveyors.
  • the first transport path may be configured to transport the articles from an entrance sidewall to an exit sidewall on a first conveyor
  • the second transport path may be configured to transport the articles from an entrance sidewall to an exit sidewall on a second conveyor.
  • the first transport path and the second transport path may be defined by an upper and a lower run of a conveyor, and the divider plate may be positioned between the upper and lower runs of the conveyor.
  • the first transport path may be configured to transport the articles from a front entrance sidewall to an exit sidewall on a feed run of the conveyor
  • the second transport path may be configured to transport the articles on a return run of the conveyor from an entrance to an exit on a lateral sidewall.
  • the gas circulation path may be substantially perpendicular to the first and second transport paths.
  • the gas circulation device may comprise a centrifugal blower positioned laterally to the at least one conveyor.
  • the gas circulation device may comprise a plurality of inline centrifugal blowers positioned laterally to the at least one conveyor.
  • the at least one conveyor may be adapted to receive and transport cylindrically shaped food logs with a longitudinal axis of each of the food logs positioned in a direction similar to a direction of the short axis of the conveyor.
  • a method of crust freezing articles in particular cylindrically shaped articles, for example cylindrically shaped food articles or food logs, in a freezer, comprising:
  • the gas circulation path across articles on the first transport path may be isolated from the gas circulation path across articles on the second transport path.
  • the first transport path and the second transport path may be defined by a plurality of independent conveyors, wherein a gas impermeable barrier, in particular a divider, for example a divider plate, may be positioned between the independent conveyors.
  • a gas impermeable barrier in particular a divider, for example a divider plate
  • the first portion of the articles may be transported along the first transport path from an entrance sidewall to an exit sidewall of the freezer on a first conveyor, and the second portion of the articles may be transported along the second transport path from the entrance sidewall to the exit sidewall of the freezer on a second conveyor.
  • the first transport path and the second transport path may be defined by an upper and a lower run of a conveyor, wherein a gas impermeable barrier, in particular a divider, for example a divider plate, may be positioned between the upper and lower runs of the conveyor.
  • a gas impermeable barrier in particular a divider, for example a divider plate
  • the first portion of the articles may be transported along the first transport path from a front entrance sidewall to an exit sidewall in the freezer on a feed run of the conveyor, and the second portion of the articles may be transported along the second transport path on a return run of the conveyor from an entrance to an exit on a lateral sidewall of the freezer.
  • the gas circulation path may be established substantially perpendicular to the first and second transport paths.
  • the gas circulation device may comprise a centrifugal blower positioned laterally to the at least one conveyor.
  • the gas circulation device may comprise a plurality of inline centrifugal blowers positioned laterally to the at least one conveyor.
  • the articles may be received and transported with a longitudinal axis of each of the articles being in a direction similar to a direction of the short axes of the first and second transport paths.
  • a gas velocity of the cryogen gas in the gas circulation path may be between about twenty meters per second and about thirty meters per second.
  • the present embodiments are directed to an apparatus for crust freezing articles, being particularly efficient for crust freezing generally cylindrically shaped articles in a freezer, and the associated method of crust freezing such articles.
  • gas flow is generated and applied in the freezer so that the entire log, transported on a conveyor belt, is surrounded by the gas flow at a constant velocity, resulting in an even or uniform crust freeze.
  • the gas velocities generated by the present embodiments are up to two times to three times greater than in prior, conventional crust freezers, and the gas flow travels across the width of the conveyor belt.
  • Logs can be loaded optimally by the present embodiments, for example lengthwise across the width of the conveyor, such as a conventional conveyor belt, and the size of the freezing tunnel can be reduced by commensurate orders of magnitude.
  • logs can be frozen on a plurality of conveyor transport paths, thereby reducing further the footprint of the freezing system.
  • Cryogenic gas is circulated in the present cooler/freezer by a series of inline centrifugal blowers, and the position of the blower(s) is laterally offset from the conveyor(s), as compared to a conventional crust freezer where axial blowers are positioned above the conveyor.
  • Cryogen may be introduced into the freezer by spraying liquid or solid cryogen into the circulating gas at any point in the gas circulation loop.
  • Articles to be crust frozen such as deli or meat logs are placed on the conveyor belts and are transported through the freezing zone.
  • the articles may be loaded onto both belts simultaneously.
  • the internal gas circulation path is designed and configured such that high velocity cryogen gas impacts the articles on both the top and bottom belts in a single circulation path. There is no independent return path required for this gas flow circuit, which results in an extremely efficient utilization of circulating gas in the freezer.
  • the coolant or cryogen may comprise nitrogen or carbon dioxide.
  • cryogen as used herein is similar to the term “coolant”, and such terminology is not intended to necessarily be limited to materials which have a purely cryogenic effect, although that meaning is intended to be included in the use of "cryogen”.
  • cryogen as used herein means any material or mixture which provides a cooling effect to a product, such as for example the logs or articles herein.
  • the cryogen gas is pressurized by inline centrifugal blowers and is forced directly across the articles, such as meat logs, transported on the conveyors.
  • the gas circulation path originates with the blower, travels laterally to contact the articles on one conveyor run, and is deflected by a sidewall of the freezer to the blower inlet along a return path contacting the articles on another conveyor run.
  • baffle or divider plate located under the top conveyor belt (or in certain embodiments, below the top run of the conveyor) so that the cryogen gas flow cannot short circuit back to the inlet of the blower through the conveyor belt.
  • This divider plate helps to define the gas circulation path, and allows for a constant gas flow profile to be established across both the top and bottom belts.
  • the gas circulation path can be directed across a lower conveyor run with a return path across the upper conveyor run.
  • the overall height of the roof of the crusting freezer is minimized, providing for clearance of the articles transported on the conveyor but not requiring room for a blower or fan above the conveyor, so that the cross sectional area of gas flow is also minimized.
  • the floor panel of the freezer is also located within very close proximity to the bottom conveyor return belt for the same reason. This allows the total volumetric flow of gas to be reduced while still achieving high gas flow velocities on the surface of the product.
  • a crust freezer embodiment including an apparatus 10 for crust freezing articles 12 on a plurality of conveyor paths 14, 16 comprising an enclosure 20 having a ceiling 22, a floor 24 and a plurality of sidewalls 26, at least one conveyor 18 for transporting the articles 12 through the enclosure 20 and defining at least a first transport path 14 and a second transport path 16, a cryogen gas supply 29, optionally in communication with a sprayer 32 for releasing cryogen 33 into the enclosure, at least one gas circulation device, such as a blower 30, positioned for circulating cryogen gas along a gas circulation path (shown by arrows) 34 across short axes 19 of the first transport path 14 and of the second transport path 16 along the conveyor 18, a divider plate 28 positioned between the first transport path 14 and the second transport path 16, and further defining the gas circulation path 34 whereby the cryogen gas from the gas circulation device 30 passes across articles 12 on the first transport path 14 and returns to the gas circulation device 30, passing across articles 12 on the second transport path 16.
  • a gas circulation device such as a blower 30, positioned for
  • the first transport path 14 and the second transport path 16 are defined by a plurality of independent conveyors 18, and the divider plate 28 is positioned between the conveyors 18, or between runs of the conveyor 18 which is proximate to the outlet of the blower 30, i.e. at the beginning of the gas circulation path 34.
  • the first transport path 14 is designed and configured to transport the articles 12 from an entrance sidewall 46 to an exit sidewall 48 on a first conveyor 18 and the second transport path 16 is designed and configured to transport the articles 12 from the entrance sidewall 46 to the exit sidewall 48 on a second conveyor 18.
  • the first transport path 14 and the second transport path 16 are defined by an upper and a lower run of a conveyor 18, and the divider plate 28 is positioned between the runs 14, 16 of the conveyor 18.
  • the first transport path 14 is designed and configured to transport the articles 12 from a front entrance sidewall 46 to an exit sidewall 48 on a feed run of the conveyor 18, and the second transport path 16 is designed and configured to transport the articles 12 on a return run of the conveyor 18 from an entrance 56 to an exit 58 on a lateral sidewall.
  • the articles 12 may be provided to the freezer 10 on an external feed conveyor 60, and the crust frozen articles 12 may be removed from the freezer 10 via an external exit conveyor 62.
  • the gas circulation path 34 is substantially perpendicular to the first transport path 14 and to the second transport path 16, i.e. at about a right angle to the direction of the transport of articles 12 through the freezer 10.
  • the gas velocity of the cryogen gas in the gas circulation path 34 may be between about twenty meters per second and about thirty meters per second.
  • Surface convective heat transfer from the articles increases linearly with gas cross velocity.
  • the gas circulation device may be a centrifugal blower 30 positioned laterally with respect to the at least one conveyor 18, in typical embodiments a plurality of inline centrifugal blowers positioned laterally with respect to the conveyor or conveyors 18.
  • the blower 30 typically has an impeller 35 driven by a blower motor 36 mounted at the ceiling 22 of the freezer 10, such that gas exits the impeller 35, travels along the gas circulation path 34 across articles 12 on the conveyor 18, and returns to the blower inlet 38.
  • FIG. 2 the line of centrifugal blowers 30 is shown laterally in front of the conveyor 18, and in FIG. 4 , the line of centrifugal blowers 30 is shown laterally behind the conveyor 18.
  • the conveyor(s) 18 is/are adapted to receive and transport generally cylindrically shaped food logs with the longitudinal axis of the food logs in the direction of the short axis 19 of the conveyor 18; or in other words with the longitudinal axis of each of the food logs being positioned transverse to a direction of movement of the conveyor 18, as shown in FIG. 3 .
  • a method of crust freezing cylindrically shaped articles 12 in a freezer 10 comprising transporting a first portion of articles 12 along a first transport path 14, and a second portion of articles 12 along a second transport path 16 within the freezer 10, establishing a cryogen gas circulation path 34 from at least one gas circulation device 30 across the short axes 19 of the first transport path 14 and of the second transport path 16, whereby cryogen gas from the gas circulation device 30 passes across the first portion of articles 12 on the first transport path 14 and returns to the gas circulation device 30 by passing across articles 12 on the second transport path 16.
  • the method may include isolating the gas circulation path 34 across articles 12 on the first transport path 14 from the gas circulation path 34 across articles 12 on the second transport path 16.
  • the first transport path 14 and the second transport path 16 are defined by a plurality of independent conveyors 18, and a gas impermeable barrier 28 is positioned between the conveyors 18, or between runs of the conveyor 18 proximate to the exit of the blower 30, or impeller 35.
  • the method includes transporting the first portion of the articles 12 along the first transport path 14 from an entrance sidewall 46 to an exit sidewall 48 of the freezer 10 on a first conveyor 18 and transporting the second portion of the articles 12 along the second transport path 16 from the entrance sidewall 46 to the exit sidewall 48 of the freezer 10 on a second conveyor 18.
  • the first transport path 14 and the second transport path 16 are defined by an upper and a lower run of a conveyor 18, and a gas impermeable barrier 28 is positioned between the runs of the conveyor 18.
  • the conveyor or conveyors 18 may receive and transport cylindrically shaped food logs 12 with the longitudinal axis of the food logs 12 in the direction of the short axis 19 of the conveyor 18; or in other words with the longitudinal axis of each of the food logs 12 being positioned transverse to a direction of movement of the conveyor 18.
  • Table 5 residence time or retention time (minutes) average crust depth [inch] average crust depth [cm] depth range [inch] depth range [cm] 0 0 0 0 1 0.18 0.457 0.12 to 0.25 0.305 to 0.635 2 0.25 0.635 0.17 to 0.3 0.432 to 0.762 3 0.31 0.787 0.24 to 0.4 0.61 to 1.016
  • the performance of the subject cross flow apparatus and method has also been shown to be superior to a more rigorous freezer environment, that of an impingement freezer, in which solid or liquid cryogen is entrained in a cryogenic gas to impinge upon product as it is transported through the freezer.
  • the heat transfer coefficient for the subject cross flow freezer at a set point operating temperature of minus 80°F (minus 62°C), in a crusting operation for all-meat bologna logs was an average of 18.3 Btu/(hr*ft 2 *°F) (being 103.91 W/(m 2 *K)) as compared to an average of only 11.9 Btu/(hr*ft 2 *°F) (being 67.57 W/(m 2 *K)) for an impingement freezer at a set point operating temperature of minus 85°F to minus 90°F (minus 65°C to minus 68°C).
  • the bologna logs were 39 lbs each (17.69 kg each), with a diameter of 4.35 inches (11.05 cm), a length of 70 inches (1.78 m), a surface area of 956.13 in 2 (0.62 m 2 ), and a density of 64.8 lb/ft 3 (1038.10 kg/m 3 ).
  • the latent heat was 79 Btu/lb (183.75 kJ/kg), and the freeze point was 28°F (minus 1.7°C).
  • Table 6 comparison between crossflow and impingement freezer: cross flow freezer SP retention time T1 crust T1 core crust depth crust depth T2 crust T2 core mass of product frozen heat removal crust Tlm heat transfer coefficient [°F/°C] [minutes] [°F/°C] [°F/°C] [inch] [cm] [°F/°C] [°F/°C] [lb/kg] [Btu/lb/ kJ/kg] [°F] [Btu/ (hr*ft 2 *°F)/ W/(m 2 *K)] -80/-62.22 2 29/-1.67 24.6/-4.11 0.25 0.635 18/-7.78 25/-3.89 9.0/4.1 42.8/99.5 103.4 16.8/95.40 -80/-62.22 3 29/-1.67 262/-3.22

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)
  • Chemical Kinetics & Catalysis (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)
EP17172274.7A 2016-12-06 2017-05-22 Appareil et procédé de congélation superficielle d'articles Pending EP3333511A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201615370353A 2016-12-06 2016-12-06

Publications (1)

Publication Number Publication Date
EP3333511A1 true EP3333511A1 (fr) 2018-06-13

Family

ID=58772416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17172274.7A Pending EP3333511A1 (fr) 2016-12-06 2017-05-22 Appareil et procédé de congélation superficielle d'articles

Country Status (1)

Country Link
EP (1) EP3333511A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022240394A1 (fr) * 2021-05-11 2022-11-17 Linde Gmbh Appareil de refroidissement d'articles et procédé correspondant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708995A (en) * 1971-03-08 1973-01-09 D Berg Carbon dioxide food freezing method and apparatus
US20100319365A1 (en) * 2007-11-27 2010-12-23 Newman Michael D Cross flow tunnel freezer system
US20120273165A1 (en) * 2007-08-13 2012-11-01 Mccormick Stephen A Cross-flow spiral heat transfer apparatus with solid belt

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708995A (en) * 1971-03-08 1973-01-09 D Berg Carbon dioxide food freezing method and apparatus
US20120273165A1 (en) * 2007-08-13 2012-11-01 Mccormick Stephen A Cross-flow spiral heat transfer apparatus with solid belt
US20100319365A1 (en) * 2007-11-27 2010-12-23 Newman Michael D Cross flow tunnel freezer system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022240394A1 (fr) * 2021-05-11 2022-11-17 Linde Gmbh Appareil de refroidissement d'articles et procédé correspondant

Similar Documents

Publication Publication Date Title
US7587903B2 (en) Method for surface crust freezing of food product
EP2594870B1 (fr) Appareil de congélateur
EP1819975B1 (fr) Procede et dispositif de congelation de produits alimentaires
US8020487B2 (en) Food processing apparatus and method
US5765381A (en) Multitier crossflow cryogenic freezer and method of use
US5365752A (en) Freezing apparatus
KR101693634B1 (ko) 냉기 분사 기구
US6622513B1 (en) Freeze-crusting process and apparatus
EP3290834A1 (fr) Impacteur servant à refroidir ou congeler des produits et processus/procédé correspondant
US5606861A (en) Crossflow cryogenic freezer and method of use
US20140053697A1 (en) System and method of chilling a food product proximate to and in a food processing device
US20070169630A1 (en) Thermal processing chamber and conveyor belt for use therein and method of processing product
EP3333511A1 (fr) Appareil et procédé de congélation superficielle d'articles
US10813371B2 (en) Apparatus and methods for cooling products
CN110595136A (zh) 一种快速冷冻食品设备
WO2005073649A1 (fr) Dispositif et procede pour refrigerer un lit fluidise
CN111288724B (zh) 冲击式速冻机
AU2006278443B2 (en) Crust freezing system
JPH0437747Y2 (fr)
JPH0823926A (ja) 生鮮食品加工装置
JP2003114082A (ja) 被冷凍物品の冷凍方法及び装置
EP3343140A1 (fr) Appareil de refroidissement ou/de congélation de produits

Legal Events

Date Code Title Description
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

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20181213

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: LINDE GMBH

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20210125

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20240228