WO1993007430A1 - Air treatment plant for foodstuffs with conveyor belt periodically driven opposite direction to the troughfeed direction - Google Patents
Air treatment plant for foodstuffs with conveyor belt periodically driven opposite direction to the troughfeed direction Download PDFInfo
- Publication number
- WO1993007430A1 WO1993007430A1 PCT/SE1992/000691 SE9200691W WO9307430A1 WO 1993007430 A1 WO1993007430 A1 WO 1993007430A1 SE 9200691 W SE9200691 W SE 9200691W WO 9307430 A1 WO9307430 A1 WO 9307430A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- trough
- air treatment
- treatment plant
- conveyor belt
- belt
- Prior art date
Links
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
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/04—Charging, supporting, and discharging the articles to be cooled by conveyors
-
- 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
Definitions
- the present invention generally relates to an air treatment plant for foodstuffs, comprising a housing, an elongate trough provided therein for receiving the foodstuff to be treated, a heat exchanger and a fan assembly for producing an air flow circulating through the heat exchanger, up through the trough and back to the heat exchanger, the bottom of the trough comprising a foraminated conveyor belt.
- the invention relates more specifically to a freez ⁇ ing plant, but is also applicable to other air treatment plants, e.g. for cooling, drying and heating.
- the heat exchanger is a cooling-coil bat- tery.
- the object of the present invention is to overcome or at least substantially reduce the build-up of such layers on the conveyor belt.
- this object is achieved in that the conveyor belt is driven by a motor provided with a control unit for at least periodically driving the conveyor belt in a direction opposite to a throughfeed direction of the foodstuff in the trough.
- a control unit for at least periodically driving the conveyor belt in a direction opposite to a throughfeed direction of the foodstuff in the trough.
- the inventive arrangement it is thus pos ⁇ sible to readily prevent the build-up of material on the belt, which is achieved more specifically in that the belt, by being driven in a direction opposite to the throughfeed direction of the foodstuff in the trough, is at least periodically moved out into the area before the front end of the trough, where it can be easily relieved of any layer of material that may have built up on it.
- the control unit may be arranged for periodically driving the belt in opposite directions about a fixed position, i.e. the belt then behaves in almost the same way as a trough which has a fixed bottom, the trough being oscillated in its longitudinal direction. This produces the additional effect which is achieved with such an oscillating trough, i.e.
- control unit may be arranged for periodically driving the belt in opposite directions with a net motion in the throughfeed direction of the food ⁇ stuff in the trough.
- the belt contributes to the feed of foodstuffs through the trough.
- the most effective removal of layers built up on the conveyor belt is however achieved in that the control unit is arranged for continuously driving the conveyor belt in a direction opposite to the throughfeed direction of the foodstuff in the trough.
- the arrangement has a device for removing on the infeed side of the trough layers of mate ⁇ rial which have built up on the conveyor belt, especially for deicing.
- the motor used in the air treatment plant is advan- tageously a step motor.
- the bottom of the trough may comprise a fixed, fora- minated plate disposed underneath the conveyor belt.
- the bottom of the trough however consists only of a foraminated conveyor belt. In a preferred embodiment, this consists of plates which are articulated to each other and have perforations over their entire surface in the form of through holes, as well as through slots at their portions of articulation.
- Fig. 1 is a schematic side view
- Fig. 2 is a cross-sectional view of a freezing plant according to the present invention
- Fig. 3 is a perspec- tive view of the units accommodated in the freezing plant in Figs 1 and 2.
- Fig. 4 shows parts of a foraminated con ⁇ veyor belt usable in the freezing plant of the invention.
- the embodiment of a freezing plant according to the invention as shown in Figs 1-3 has a housing 1 with side walls 2 and 3, end walls 4 and 5, a roof 6 and a bottom 7.
- the end walls 4 and 5 have openings for a belt conveyor 8 traversing the housing 1 and having an infeed station 9 and an outfeed station 10.
- the end wall 5 of the housing 1 is provided with a control unit 11 for the belt conveyor 8.
- the housing 1 is divided into a number of substan ⁇ tially identical modules extending transversely of the longitudinal direction of the belt conveyor 8, as dis ⁇ closed more specifically in Swedish Patent Application No. 9102861-3.
- the housing accommodates a trough 12, a cooling-coil battery unit 13 and a fan 14 with a fan motor 15.
- the bottom of the trough 12 is formed by the two, foraminated conveyor belts 16 of the belt con- veyor 8.
- the outer side wall of the trough 12 is formed by the side wall 2 of the housing 1.
- the inner side wall 17 of the trough 12 extends vertically upwards from the belt 16 and is then angled to form an air duct expanding over the bed.
- the air duct is defined between the inner side of the housing 1 and a boundary wall 18 connecting to the side wall 17, and further boundary walls 19-22.
- the boun- dary wall 22 has an opening for a suction part 23 of the fan 14, which together with the motor 15 is mounted on the bottom 7 of the housing 1 by means of an angle attachment 24.
- the fan assembly of the freezing plant consists of several fans 14 mounted throughout the length of the trough 12 and each having a motor 15.
- the cool ⁇ ing-coil battery of the freezing plant consists of several cooling-coil battery units 13 disposed throughout the length of the trough 12.
- the fan assembly 14 in each module produces an air flow according to the arrows in Fig. 2, i.e. a closed path through the cooling-coil battery unit 13, the fan assembly 14, up through the trough 12 and back to the cooling-coil battery unit 13.
- the infeed station 9 comprises in conventional man ⁇ ner a device for cleaning the belt 16.
- the belt cleaning device operates by means of air jets, liquid jets or a mechanical scraping action for removing layers of food ⁇ stuff residues and/or ice which have built up on the belt.
- the conveyor belts 16 are driven by electric motors 25 arranged in the infeed and outfeed stations 9 and 10, respectively.
- the belt conveyor 8 as illustrat ⁇ ed, has two conveyor belts 16, it may of course comprise a single conveyor belt or more than two conveyor belts.
- the control unit 11 is arrang ⁇ ed for at least periodically driving the front conveyor belt 16 in a direction opposite to the throughfeed direc ⁇ tion of the foodstuff in the trough 12.
- the portion of this belt 16 that is located nearest the infeed station 9 and below the bed of foodstuff in the trough 12 will be periodically moved out to the cleaning device of the infeed station 9.
- the build-up of foodstuff residues and ice on the conveyor belt which primarily takes place at the end of trough 12 adjacent the infeed station 9 can thus be easily removed.
- the control unit 11 may be arranged for continuously driving the front conveyor belt 16 in a direction opposite to the throughfeed direction of the foodstuff in the trough 12.
- This mode of operation is primarily usable in the event the air flow through the trough 12 is sufficient for maintaining a fluidised state therein, the fluidisa- tion bringing about the throughfeed of foodstuff in the trough 12.
- the control unit may be arranged for periodically driving the front belt 16 in opposite direc ⁇ tions about a fixed position.
- the oscillating motion which the belt then executes will facilitate the agita ⁇ tion or fluidisation of the foodstuff particles in the trough 12.
- the electric motor or electric motors 25 are suitably step motors.
- the bottom of the trough 12 may include a fixed, foraminated plate dis ⁇ posed underneath the conveyor belts.
- the bottom of the trough 12 however consists only of the foraminated conveyor belts 16.
- the conveyor belts 16 preferably are of the.type illustrated in Fig. 4.
- This Figure shows more specifically two identical plates 26 which can be linked together in an optional number, both longitudinally and transversely, to form a conveyor belt 16 of desired length and width.
- the plates 26 have perfora ⁇ tions in the form of through holes 27 over their entire surface, as well as slots 28 along the articulated joint used for linking together the plates in the longitudinal direction of the belt 16.
- With a belt of the design as partially shown in Fig. 4 it is possible by the thickness of the plates 26 to provide perforations 27, 28 which make it possible to accurately guide the air flow through the bottom, in the form of the belts 16, of the trough 12, and thus ensure a stable fluidising state.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structure Of Belt Conveyors (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Belt Conveyors (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
- Fertilizers (AREA)
- General Preparation And Processing Of Foods (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Measurement Of Force In General (AREA)
- Chain Conveyers (AREA)
- Golf Clubs (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Drying Of Solid Materials (AREA)
- Cereal-Derived Products (AREA)
- Vending Machines For Individual Products (AREA)
Abstract
Description
Claims
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92921383A EP0601128B1 (en) | 1991-10-03 | 1992-10-02 | Air treatment plant for foodstuff with a conveyor belt at least periodically driven in a direction opposite the throughfeed direction |
BR9206678A BR9206678A (en) | 1991-10-03 | 1992-10-02 | Aeration treatment of foodstuffs |
PL92303047A PL170952B1 (en) | 1991-10-03 | 1992-10-02 | Apparatus for treating articles of food with air |
KR1019940701049A KR100209116B1 (en) | 1991-10-03 | 1992-10-02 | Food air handling plant with conveyor belt which periodically operating to the anti-supply direction |
CA002120022A CA2120022C (en) | 1991-10-03 | 1992-10-02 | Air treatment plant for foodstuff with conveyor belt periodically driven in opposite direction to the troughfeed direction |
JP05506840A JP3117718B2 (en) | 1991-10-03 | 1992-10-02 | Food air treatment plant with a conveyor belt driven periodically in opposite directions towards the direction of the grooves |
DE69205007T DE69205007T2 (en) | 1991-10-03 | 1992-10-02 | Air treatment station for food with a conveyor belt which is driven at least periodically against the direction of flow. |
US08/211,406 US5447040A (en) | 1991-10-03 | 1992-10-02 | Air treatment plant for foodstuff with conveyor belt periodically driven in opposite direction to the troughfeed direction |
AU27588/92A AU655330B2 (en) | 1991-10-03 | 1992-10-02 | Air treatment plant for foodstuff with conveyor belt periodically driven in opposite direction to the throughfeed direction |
RU9294018505A RU2091680C1 (en) | 1991-10-03 | 1992-10-02 | Plant for treatment of food stuff with air |
NO941148A NO179153C (en) | 1991-10-03 | 1994-03-29 | Air handling device for foodstuffs |
FI941476A FI101500B1 (en) | 1991-10-03 | 1994-03-30 | Air treatment arrangement for food |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9102864A SE9102864L (en) | 1991-10-03 | 1991-10-03 | FROZEN DEVICE FOR FOOD WITH TRANSPORT BELTS OPERATED PERIODLY IN THE OPERATIVE DIRECTION TO THE DIRECTION DIRECTION FOR THE FOOD |
SE9102864-7 | 1991-10-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993007430A1 true WO1993007430A1 (en) | 1993-04-15 |
Family
ID=20383893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1992/000691 WO1993007430A1 (en) | 1991-10-03 | 1992-10-02 | Air treatment plant for foodstuffs with conveyor belt periodically driven opposite direction to the troughfeed direction |
Country Status (31)
Country | Link |
---|---|
US (1) | US5447040A (en) |
EP (1) | EP0601128B1 (en) |
JP (1) | JP3117718B2 (en) |
KR (1) | KR100209116B1 (en) |
CN (1) | CN1031670C (en) |
AT (1) | ATE128224T1 (en) |
AU (1) | AU655330B2 (en) |
BR (1) | BR9206678A (en) |
CA (1) | CA2120022C (en) |
CZ (1) | CZ288223B6 (en) |
DE (1) | DE69205007T2 (en) |
DK (1) | DK0601128T3 (en) |
EG (1) | EG19235A (en) |
ES (1) | ES2077436T3 (en) |
FI (1) | FI101500B1 (en) |
HR (1) | HRP921498A2 (en) |
HU (1) | HU217458B (en) |
IS (1) | IS1641B (en) |
MX (1) | MX9205676A (en) |
MY (1) | MY108117A (en) |
NO (1) | NO179153C (en) |
NZ (1) | NZ244571A (en) |
PL (1) | PL170952B1 (en) |
PT (1) | PT100926B (en) |
RU (1) | RU2091680C1 (en) |
SE (1) | SE9102864L (en) |
SI (1) | SI9200239A (en) |
TR (1) | TR27080A (en) |
WO (1) | WO1993007430A1 (en) |
YU (1) | YU48192B (en) |
ZA (1) | ZA927564B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996011862A1 (en) * | 1994-10-14 | 1996-04-25 | Gram A/S | A plant and a method for temporary storage of items and the use of such a plant |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE513607C2 (en) | 1999-02-03 | 2000-10-09 | Ruben Larsson | Apparatus for treating and transporting a fluid bed material |
ES2184533B1 (en) * | 1999-05-12 | 2004-03-01 | Aleman Luis Morata | PROCEDURE OF FOOD PASTEURIZATION AND PASTEURIZATION TUNNEL FOR USE WITH THIS PROCEDURE. |
KR100784817B1 (en) * | 2006-06-23 | 2007-12-17 | 대한민국 | Apparatus for selecting hot pepper |
EP2589903A1 (en) * | 2011-11-02 | 2013-05-08 | R & D Carbon, Ltd. | Cooling system |
US9644883B2 (en) * | 2012-10-04 | 2017-05-09 | GEA Refrigeration Canada, Inc | Fluidized bed conveyor belt freezer system |
CN105054127B (en) * | 2015-07-13 | 2020-12-08 | 王国良 | Frozen fish ball processing equipment |
CN109163542B (en) * | 2018-08-21 | 2020-10-09 | 安徽省华腾农业科技有限公司经开区分公司 | Continuous desiccator of polyamide fiber section |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2223972A (en) * | 1939-02-11 | 1940-12-03 | Henry W Sterling | Method and apparatus for freezing comestibles |
US3201951A (en) * | 1963-12-16 | 1965-08-24 | W E Stone & Co Inc | Updraft continuous freezer |
DE2063184A1 (en) * | 1969-12-24 | 1971-07-01 | Biuro Projektow Przemysllu Fermen tacyjnego, Warschau | Belt fludised bed-freezing tunnel for fruit - and vegetables |
US3886762A (en) * | 1972-09-15 | 1975-06-03 | Frigoscandia Contracting Ab | Apparatuses for freezing articles of food and similar products |
US3982404A (en) * | 1974-11-04 | 1976-09-28 | Lewis Refrigeration Co. | Individual quick-freezing of moist articles using deep fluidized bed and input conditioner |
US4173127A (en) * | 1977-11-02 | 1979-11-06 | Formax, Inc. | Frost removal apparatus for cryogenic freezing tunnel |
GB2039015A (en) * | 1978-08-22 | 1980-07-30 | Os Bad Rozwojowy Przem Budowy | Method of and apparatus for the continuous freezing of food products in bulk |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3169381A (en) * | 1964-04-13 | 1965-02-16 | Frigoscandia Ltd | Fluidized freezer |
US3477242A (en) * | 1967-06-15 | 1969-11-11 | Lamb Weston Inc | Fluid bed apparatus for treating food products |
US3528259A (en) * | 1967-09-18 | 1970-09-15 | Air Reduction | Combination cleaning and supporting rack |
DE1779393B1 (en) * | 1968-08-06 | 1972-05-04 | Leybold Heraeus Gmbh & Co Kg | Vacuum drying chamber for the continuous freeze-drying of coarse, small-sized goods in the final state |
US3601901A (en) * | 1969-09-12 | 1971-08-31 | Earl L Rader | Freeze drying apparatus with removable conveyor and heater structures |
US4281521A (en) * | 1979-12-05 | 1981-08-04 | Refrigeration Engineering Corporation | Fluidized freezing |
US4396111A (en) * | 1981-01-05 | 1983-08-02 | Western Electric Company, Inc. | Overload detector and interrupt for conveyor chain |
US4438841A (en) * | 1981-07-06 | 1984-03-27 | Gregory Johnson | Obstruction clearing apparatus for mining conveyors |
US5025632A (en) * | 1989-06-13 | 1991-06-25 | General Atomics | Method and apparatus for cryogenic removal of solid materials |
US5349828A (en) * | 1993-09-17 | 1994-09-27 | The Boc Group, Inc. | Conveyor belt cleaning apparatus for food freezing |
-
1991
- 1991-10-03 SE SE9102864A patent/SE9102864L/en not_active IP Right Cessation
-
1992
- 1992-09-30 EG EG57792A patent/EG19235A/en active
- 1992-09-30 NZ NZ244571A patent/NZ244571A/en unknown
- 1992-09-30 CN CN92112832A patent/CN1031670C/en not_active Expired - Fee Related
- 1992-10-01 IS IS3921A patent/IS1641B/en unknown
- 1992-10-01 MY MYPI92001771A patent/MY108117A/en unknown
- 1992-10-01 ZA ZA927564A patent/ZA927564B/en unknown
- 1992-10-02 YU YU88692A patent/YU48192B/en unknown
- 1992-10-02 CZ CZ1994699A patent/CZ288223B6/en not_active IP Right Cessation
- 1992-10-02 DK DK92921383.3T patent/DK0601128T3/en active
- 1992-10-02 BR BR9206678A patent/BR9206678A/en not_active IP Right Cessation
- 1992-10-02 PL PL92303047A patent/PL170952B1/en unknown
- 1992-10-02 ES ES92921383T patent/ES2077436T3/en not_active Expired - Lifetime
- 1992-10-02 HU HU9400958A patent/HU217458B/en not_active IP Right Cessation
- 1992-10-02 CA CA002120022A patent/CA2120022C/en not_active Expired - Lifetime
- 1992-10-02 US US08/211,406 patent/US5447040A/en not_active Expired - Fee Related
- 1992-10-02 JP JP05506840A patent/JP3117718B2/en not_active Expired - Fee Related
- 1992-10-02 RU RU9294018505A patent/RU2091680C1/en not_active IP Right Cessation
- 1992-10-02 DE DE69205007T patent/DE69205007T2/en not_active Expired - Lifetime
- 1992-10-02 EP EP92921383A patent/EP0601128B1/en not_active Expired - Lifetime
- 1992-10-02 MX MX9205676A patent/MX9205676A/en unknown
- 1992-10-02 TR TR00995/92A patent/TR27080A/en unknown
- 1992-10-02 PT PT100926A patent/PT100926B/en not_active IP Right Cessation
- 1992-10-02 KR KR1019940701049A patent/KR100209116B1/en not_active IP Right Cessation
- 1992-10-02 SI SI19929200239A patent/SI9200239A/en unknown
- 1992-10-02 AT AT92921383T patent/ATE128224T1/en not_active IP Right Cessation
- 1992-10-02 HR HR9102864-7A patent/HRP921498A2/en not_active Application Discontinuation
- 1992-10-02 AU AU27588/92A patent/AU655330B2/en not_active Ceased
- 1992-10-02 WO PCT/SE1992/000691 patent/WO1993007430A1/en active IP Right Grant
-
1994
- 1994-03-29 NO NO941148A patent/NO179153C/en not_active IP Right Cessation
- 1994-03-30 FI FI941476A patent/FI101500B1/en active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2223972A (en) * | 1939-02-11 | 1940-12-03 | Henry W Sterling | Method and apparatus for freezing comestibles |
US3201951A (en) * | 1963-12-16 | 1965-08-24 | W E Stone & Co Inc | Updraft continuous freezer |
DE2063184A1 (en) * | 1969-12-24 | 1971-07-01 | Biuro Projektow Przemysllu Fermen tacyjnego, Warschau | Belt fludised bed-freezing tunnel for fruit - and vegetables |
US3886762A (en) * | 1972-09-15 | 1975-06-03 | Frigoscandia Contracting Ab | Apparatuses for freezing articles of food and similar products |
US3982404A (en) * | 1974-11-04 | 1976-09-28 | Lewis Refrigeration Co. | Individual quick-freezing of moist articles using deep fluidized bed and input conditioner |
US4173127A (en) * | 1977-11-02 | 1979-11-06 | Formax, Inc. | Frost removal apparatus for cryogenic freezing tunnel |
GB2039015A (en) * | 1978-08-22 | 1980-07-30 | Os Bad Rozwojowy Przem Budowy | Method of and apparatus for the continuous freezing of food products in bulk |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996011862A1 (en) * | 1994-10-14 | 1996-04-25 | Gram A/S | A plant and a method for temporary storage of items and the use of such a plant |
AU686462B2 (en) * | 1994-10-14 | 1998-02-05 | Gram A/S | A plant and a method for temporary storage of items and the use of such a plant |
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