FR2396248A1 - Cryogenic immersion freezing plant partic. for food prods. - recycles liq. carbon di:oxide by recompressing exhaust gas - Google Patents

Cryogenic immersion freezing plant partic. for food prods. - recycles liq. carbon di:oxide by recompressing exhaust gas

Info

Publication number
FR2396248A1
FR2396248A1 FR7720178A FR7720178A FR2396248A1 FR 2396248 A1 FR2396248 A1 FR 2396248A1 FR 7720178 A FR7720178 A FR 7720178A FR 7720178 A FR7720178 A FR 7720178A FR 2396248 A1 FR2396248 A1 FR 2396248A1
Authority
FR
France
Prior art keywords
liq
partic
prod
pref
exit
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.)
Granted
Application number
FR7720178A
Other languages
French (fr)
Other versions
FR2396248B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7720178A priority Critical patent/FR2396248A1/en
Publication of FR2396248A1 publication Critical patent/FR2396248A1/en
Application granted granted Critical
Publication of FR2396248B1 publication Critical patent/FR2396248B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/40—Feeding or discharging devices
    • B65G53/46—Gates or sluices, e.g. rotary wheels
    • B65G53/4608—Turnable elements, e.g. rotary wheels with pockets or passages for material
    • B65G53/4625—Turnable elements, e.g. rotary wheels with pockets or passages for material with axis of turning perpendicular to flow
    • B65G53/4633—Turnable elements, e.g. rotary wheels with pockets or passages for material with axis of turning perpendicular to flow the element having pockets, rotated from charging position to discharging position, i.e. discrete flow
    • B65G53/4641—Turnable elements, e.g. rotary wheels with pockets or passages for material with axis of turning perpendicular to flow the element having pockets, rotated from charging position to discharging position, i.e. discrete flow with means for clearing out the pockets
    • 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

Abstract

Air lock valves are employed as prod. entry and exit for a pressure vessel in which the prod. is immersed in liq. CO2 under a head space of gaseous CO2 at a pressure above atmospheric. An elevator is used to lift the prod. from the liq. and deliver it to the exit. Excess gas from the head space is exhausted to a compressor which delivers it to a condenser reservoir from which liq. CO2 is returned to the pressure vessel. The air locks are pref. of the rotary or spaced shutter types. The exit pref. comprises two air lock valves in succession with an intermediate decompression space from which gas is pumped back to the headspace. Pressure inside the vessel is pref. about 6 bars and the compressor delivers at a pressure of about 12 bars. Used for rapid deep freezing of prods. esp. food prods. on an industrial scale. The installation can handle food prods. as complete items, reduced to small pieces or as particles. In partic. particles which previously tended to agglomerate are now frozen as clean, individual particles. The installation is inexpensive to buy and economic to operate because the CO2 is recycled.
FR7720178A 1977-06-30 1977-06-30 Cryogenic immersion freezing plant partic. for food prods. - recycles liq. carbon di:oxide by recompressing exhaust gas Granted FR2396248A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7720178A FR2396248A1 (en) 1977-06-30 1977-06-30 Cryogenic immersion freezing plant partic. for food prods. - recycles liq. carbon di:oxide by recompressing exhaust gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7720178A FR2396248A1 (en) 1977-06-30 1977-06-30 Cryogenic immersion freezing plant partic. for food prods. - recycles liq. carbon di:oxide by recompressing exhaust gas

Publications (2)

Publication Number Publication Date
FR2396248A1 true FR2396248A1 (en) 1979-01-26
FR2396248B1 FR2396248B1 (en) 1980-03-14

Family

ID=9192802

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7720178A Granted FR2396248A1 (en) 1977-06-30 1977-06-30 Cryogenic immersion freezing plant partic. for food prods. - recycles liq. carbon di:oxide by recompressing exhaust gas

Country Status (1)

Country Link
FR (1) FR2396248A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664683A1 (en) * 1990-07-12 1992-01-17 Aernout Bernard Device for heat exchange with a view to heating a product to a predetermined temperature
NL1009914C2 (en) * 1998-08-21 2000-02-22 Hoek Loos Bv Preparing packaged frozen food, especially frozen minced meat, comprises addition to a bath of liquid condensed from a gas, removing from the bath and packaging

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO311164B1 (en) * 1998-06-02 2001-10-22 Leiv Eiriksson Nyfotek As Process for freeze-drying of solutions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664683A1 (en) * 1990-07-12 1992-01-17 Aernout Bernard Device for heat exchange with a view to heating a product to a predetermined temperature
NL1009914C2 (en) * 1998-08-21 2000-02-22 Hoek Loos Bv Preparing packaged frozen food, especially frozen minced meat, comprises addition to a bath of liquid condensed from a gas, removing from the bath and packaging

Also Published As

Publication number Publication date
FR2396248B1 (en) 1980-03-14

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