FR2461217A1 - Hot air fruit drying machine - has conveyor passing under regulated airstream and fitted with draining hopper below fan - Google Patents

Hot air fruit drying machine - has conveyor passing under regulated airstream and fitted with draining hopper below fan Download PDF

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Publication number
FR2461217A1
FR2461217A1 FR7917560A FR7917560A FR2461217A1 FR 2461217 A1 FR2461217 A1 FR 2461217A1 FR 7917560 A FR7917560 A FR 7917560A FR 7917560 A FR7917560 A FR 7917560A FR 2461217 A1 FR2461217 A1 FR 2461217A1
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FR
France
Prior art keywords
conveyor
fruit
blowing machine
box
rafters
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Withdrawn
Application number
FR7917560A
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French (fr)
Inventor
Michel Sillet
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.)
MACH CALIBRAGE COND
Original Assignee
MACH CALIBRAGE COND
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 MACH CALIBRAGE COND filed Critical MACH CALIBRAGE COND
Priority to FR7917560A priority Critical patent/FR2461217A1/en
Publication of FR2461217A1 publication Critical patent/FR2461217A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00—Preservation or chemical ripening of fruit or vegetables
    • A23B7/02—Dehydrating; Subsequent reconstitution
    • A23B7/0205—Dehydrating; Subsequent reconstitution by contact of the material with fluids, e.g. drying gas or extracting liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/122—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of material being carried by transversely moving rollers or rods which may rotate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The fruit dryer consists of a framework (1) which carries a fan (2) with an output of 1.5 cu.m/sec. at 600 mm H2O. The fan is driven by the electric motor (3). The fan blows into the bin (4) which is closed at the base by a perforated plate (5) or grille. The plate is mounted on the table (6) and the table is attached to a belt conveyer in between end rollers. The washed fruit (7) passes under the air stream, and a drain hopper (8) is mounted under the table (6). The velocity of the air stream is controlled by partially closing the perforations in the plate or grille.

Description

La présente invention concerne un dispositif de séchage pour fruits ou analogues.The present invention relates to a drying device for fruit or the like.

On sait qu'au cours de leur conditionnement, dans une chaîne industrielle, les fruits sont lavés avant d'être emballés en cagettes.Bienentendu, il est indispensable que néanmoins ils soient secs au moment de leur introduction dans celles-ci.We know that during their packaging, in an industrial chain, the fruits are washed before being packed in crates. Of course, it is essential that they are nevertheless dry at the time of their introduction into them.

Pour ce faire, on connaît déjà des appareils de séchage comportant une machine soufflante, équipée de moyens de chauffage, susceptible de diriger sur lesdits fruits un courant d'air chaud. Grâce à la chaleur apportée par celui-ci, l'eau de lavage restant sur les fruits est évaporée.To do this, drying apparatuses are already known comprising a blowing machine, equipped with heating means, capable of directing a stream of hot air over said fruits. Thanks to the heat provided by it, the washing water remaining on the fruit is evaporated.

Toutefois, de tels appareils de séchage présentent quelques inconvénients. Tout d'abord, à cause du chauffage de l'air qu'ils soufflent, leur utilisation est coûteuse en énergie et il en est de même de leur construction puisque l'on doit prévoir des moyens de chauffage, le branchement de ceux-ci etc... . De plus, ils soumettent les fruits à une variation rapide de température préjudiciable au bon aspect et à la conservation de ceux-ci.However, such drying devices have some drawbacks. First of all, because of the heating of the air they blow, their use is costly in energy and it is the same for their construction since we must provide heating means, the connection of these etc .... In addition, they subject the fruits to a rapid temperature change detrimental to the good appearance and conservation thereof.

La présente invention a pour objet de remédier à ces inconvénients.The object of the present invention is to remedy these drawbacks.

A cette fin, selon l'invention, le dispositif pour le séchage de fruits lavés ou analogues1 comportant une machine soufflante, est remarquable en ce que ladite machine soufflante est du type susceptible de souffler un débit d'air important à grande vitesse et à forte pression.To this end, according to the invention, the device for drying washed fruit or the like1 comprising a blowing machine, is remarkable in that said blowing machine is of the type capable of blowing a large air flow at high speed and at high pressure.

Ainsi, il est possible de supprimer les moyens de chauffage et leurs inconvénients. En effet, sous l'effet de la grande vitesse du courant d'air, l'eau est chassée de la surface des fruits, l'éventuelle humidité restante étant séchée par le passage de l'air.Thus, it is possible to eliminate the heating means and their drawbacks. Indeed, under the effect of the high speed of the air current, the water is driven from the surface of the fruit, any remaining moisture being dried by the passage of air.

De façon connue, la machine soufflante peut être disposée à poste fixe,-au-dessus d'un transporteur sur lequel défilent les fruits. De préférence, ce transporteur est constitué d'une suite sans fin de rouleaux ou de brosses cylindriques parallèles, tournant autour de leur axe. Ainsi, les fruits roulent sur eux-mêmes et la totalité de leur surface peut être exposée au courant d'air. De plus, l'eau chassée par celuici peut passer entre les rouleaux ou les brosses. On prévoit alors, sous le transporteur, un récipient susceptible de recueillir l'eau chassée. De préférence, la machine soufflante débite dans un caisson, disposé au-dessus dudit transporteur et ouvert en direction de celui-ci. L'ouverture du caisson peut être obturée par une plaque perforée, une grille, etc...Le réglage de la vitesse de l'air sur les fruits peut être obtenu au moins en partie par masquage partiel des trous de la plaque ou de la grille.In known manner, the blowing machine can be arranged at a fixed station, above a conveyor on which the fruit pass. Preferably, this conveyor consists of an endless series of parallel cylindrical rollers or brushes, rotating around their axis. Thus, the fruits roll on themselves and their entire surface can be exposed to the air current. In addition, the water driven by it can pass between the rollers or the brushes. There is then provided, under the conveyor, a container capable of collecting the expelled water. Preferably, the blowing machine delivers into a box, placed above said conveyor and open in the direction of the latter. The opening of the box can be closed by a perforated plate, a grid, etc. The adjustment of the air speed on the fruits can be obtained at least in part by partially masking the holes in the plate or the wire rack.

Les figures du dessin annexé feront bien comprendre comment l'invention peut être réalisée.The figures of the appended drawing will make it clear how the invention can be implemented.

La figure 1 est une vue en coupe longitudinale du dispositif de séchage selon l'invention.Figure 1 is a longitudinal sectional view of the drying device according to the invention.

La figure 2 est une vue de face du dispositif de la figure 1.Figure 2 is a front view of the device of Figure 1.

La figure 3 est une vue de la tôle de repartition d'air.Figure 3 is a view of the air distribution sheet.

Le dispositif de séchage selon l'invention, montré par ces figures, comporte un portique 1, au sommet duquel est agencé un ventilateur 2, par exemple du type HA60 , susceptible de 3 débiter 1,5 m par seconde sous 600 mm d'eau. Le ventilateur 2 est entraîné par un moteur 3.The drying device according to the invention, shown in these figures, comprises a gantry 1, at the top of which is arranged a fan 2, for example of the HA60 type, capable of 3 delivering 1.5 m per second under 600 mm of water . The fan 2 is driven by a motor 3.

Le ventilateur 2 débite dans un caisson 4, dont la face inférieure est obturée par une tôle perforée 5. La tble perforée 5 se trouve au-dessus d'une table 6, de type connu, à rouleaux mobiles en translation, tout en tournant autour de leur axe.The fan 2 delivers into a box 4, the underside of which is closed by a perforated plate 5. The perforated plate 5 is located above a table 6, of known type, with rollers movable in translation, while turning around of their axis.

Sur cette table 6, peuvent être versés des fruits 7 sortant d'une cuve de lavage (non représentée) ou provenant d'un dispositif de tout autre nature telle que convoyeur à immersion, tunnel de traitement, etc... On this table 6, fruit 7 can be poured out of a washing tub (not shown) or from a device of any other nature such as immersion conveyor, treatment tunnel, etc.

Sur la table 6, en regard de la tôle perforée 5, est disposé un égouttoir 8.On the table 6, opposite the perforated sheet 5, is arranged a drainer 8.

Ainsi, lorsque les fruits 7 humides passent sous le caisson 4, ils sont soumis à l'action du courant d'air engendré par le ventilateur 2 et qui chasse l'eau de la surface desdits fruits.Thus, when the wet fruits 7 pass under the box 4, they are subjected to the action of the air current generated by the fan 2 and which drives the water from the surface of said fruits.

Cette eau passe entre les rouleaux de la table 6 et est recueillie dans l'égouttoir 8. Etant donné que les fruits 7 tournent sur eux-mêmes grâce à l'action des rouleaux de la table 6, la totalité de leur surface est soumise à l'action-du courant d'air engendré par le ventilateur 2, et donc séchée.This water passes between the rollers of table 6 and is collected in the drainer 8. Since the fruits 7 rotate on themselves thanks to the action of the rollers of table 6, their entire surface is subjected to the action of the air current generated by the fan 2, and therefore dried.

De préférence, la distance h entre la table 6 et la tôle perforée 5 du caisson est prévue réglable. Des bavettes 9 peuvent être prévues latéralement pour éviter les pertes latérales d'air et l'écoulement d'eau.Preferably, the distance h between the table 6 and the perforated sheet 5 of the box is provided adjustable. Mud flaps 9 can be provided laterally to avoid lateral air losses and water flow.

Sur la figure 3, on a représenté un mode de réalisation de la tôle perforée 5. Celle-ci est perforée d'ouvertures 10 en forme de chevrons permettant d'une part, d'augmenter la longueur des orifices de soufflage et, d'autre part, de ne pas perturber l'avance des fruits sur les rouleaux ou les brosses tournant autour de leurs axes. Les chevrons 10 sont disposés symétriquement par rapport au sens d'avance des fruits. La tôle 5 peut comporter deux ensembles de chevrons disposés de façon que la concavité des chevrons de l'un desdits ensembles se trouve en regard de la concavité des chevrons de l'autre ensemble. In Figure 3, there is shown an embodiment of the perforated sheet 5. It is perforated with openings 10 in the form of chevrons allowing on the one hand, to increase the length of the blowing orifices and, on the other hand, not to disturb the advance of the fruits on the rollers or the brushes turning around their axes. The rafters 10 are arranged symmetrically with respect to the direction of advance of the fruits. The sheet 5 may include two sets of rafters arranged so that the concavity of the rafters of one of said sets is opposite the concavity of the rafters of the other set.

Claims (7)

R E V E N D I C A T I O N SR E V E N D I C A T I O N S 1.- Dispositif pour le séchage de fruits ou analogues, humides ou mouillés, comportant une machine soufflante, caractérisée en ce que ladite machine soufflante est du type susceptible de souffler un débit d'air important à grande vitesse et à forte pression, ce qui permet d'éviter l'utilisation de moyens de chauffage.1.- Device for drying fruit or the like, moist or wet, comprising a blowing machine, characterized in that said blowing machine is of the type capable of blowing a large air flow at high speed and at high pressure, which avoids the use of heating means. 2.- Dispositif selon la revendication 1, dans lequel la machine soufflante est disposée à poste fixe, au-dessus d'un transporteur sur lequel défilent les fruits, caractérisé en ce que ce transporteur est constitué d'une suite sans fin de rouleaux ou de brosses cylindriques parallèles, tournant autour de leur axe.2.- Device according to claim 1, wherein the blowing machine is arranged at a fixed station, above a conveyor on which the fruit pass, characterized in that this conveyor consists of an endless series of rollers or parallel cylindrical brushes, rotating around their axis. 3.- Dispositif selon la revendication 2, caractérisé en ce qu'il comporte, sous le transporteur, un récipient susceptible de recueillir l'eau chassée des fruits par le courant d'air.3.- Device according to claim 2, characterized in that it comprises, under the carrier, a container capable of collecting the water driven from the fruits by the air stream. 4.- Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la machine soufflante débite dans un caisson, disposé au-dessus dudit transporteur et ouvert en direction de celui-ci.4.- Device according to any one of claims 1 to 3, characterized in that the blowing machine delivers in a box, arranged above said conveyor and open in the direction thereof. 5.- Dispositif selon la revendication 4, caractérisé en ce que l'ouverture du caisson en direction du transporteur est obturée par une plaque perforée, une grille ou analogue et en ce que le réglage de la vitesse de l'air sur les fruits est obtenu au moins en partie par masquage partiel de trous de la plaque ou de la grille.5.- Device according to claim 4, characterized in that the opening of the box in the direction of the conveyor is closed by a perforated plate, a grid or the like and in that the adjustment of the air speed on the fruits is obtained at least in part by partially masking holes in the plate or grid. 6.- Dispositif selon la revendication 4, caractérisé en ce que l'ouverture du caisson en direction du transporteur est obturée par une plaque perforée d'ouvertures en forme de chevrons, disposés symétriquement par rapport au sens d'avance des fruits.6.- Device according to claim 4, characterized in that the opening of the box in the direction of the conveyor is closed by a perforated plate of chevron-shaped openings, arranged symmetrically with respect to the direction of advance of the fruit. 7.- Dispositif selon la revendication 6, caractérisé en ce que la tôle perforée comporte deux ensembles de chevrons disposés de façon que la concavité des chevrons de l'un desdits ensembles se trouve en regard de la concavité des chevrons de l'autre ensemble. 7.- Device according to claim 6, characterized in that the perforated sheet has two sets of rafters arranged so that the concavity of the rafters of one of said sets is opposite the concavity of the rafters of the other set.
FR7917560A 1979-07-06 1979-07-06 Hot air fruit drying machine - has conveyor passing under regulated airstream and fitted with draining hopper below fan Withdrawn FR2461217A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7917560A FR2461217A1 (en) 1979-07-06 1979-07-06 Hot air fruit drying machine - has conveyor passing under regulated airstream and fitted with draining hopper below fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7917560A FR2461217A1 (en) 1979-07-06 1979-07-06 Hot air fruit drying machine - has conveyor passing under regulated airstream and fitted with draining hopper below fan

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FR2461217A1 true FR2461217A1 (en) 1981-01-30

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651644A1 (en) * 1989-09-14 1991-03-15 Chaudronnerie Gle Inoxydable Method for drying vegetable products, such as bunches of grapes, and device implementing the said method
WO1992014979A1 (en) * 1991-02-26 1992-09-03 Carnaudmetalbox Plc An oven
CN103900368A (en) * 2012-12-27 2014-07-02 嘉兴市博宏新型建材有限公司 Automatic conveying and drying equipment for mortar raw materials
EP3951298A4 (en) * 2019-04-05 2022-04-27 Roda Iberica, S.L. Tunnel for drying fruit and vegetables

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651644A1 (en) * 1989-09-14 1991-03-15 Chaudronnerie Gle Inoxydable Method for drying vegetable products, such as bunches of grapes, and device implementing the said method
WO1992014979A1 (en) * 1991-02-26 1992-09-03 Carnaudmetalbox Plc An oven
GB2266580A (en) * 1991-02-26 1993-11-03 Metal Box Plc An oven
GB2266580B (en) * 1991-02-26 1994-09-28 Metal Box Plc An oven
CN103900368A (en) * 2012-12-27 2014-07-02 嘉兴市博宏新型建材有限公司 Automatic conveying and drying equipment for mortar raw materials
EP3951298A4 (en) * 2019-04-05 2022-04-27 Roda Iberica, S.L. Tunnel for drying fruit and vegetables

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