EP2817575A1 - Séchage de produits alimentaires, en particulier de pâtes, avec une pale de ventilateur contenant du plastique - Google Patents

Séchage de produits alimentaires, en particulier de pâtes, avec une pale de ventilateur contenant du plastique

Info

Publication number
EP2817575A1
EP2817575A1 EP13704442.6A EP13704442A EP2817575A1 EP 2817575 A1 EP2817575 A1 EP 2817575A1 EP 13704442 A EP13704442 A EP 13704442A EP 2817575 A1 EP2817575 A1 EP 2817575A1
Authority
EP
European Patent Office
Prior art keywords
dryer
rotor
food
fan
wings
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Withdrawn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
EP13704442.6A
Other languages
German (de)
English (en)
Inventor
Philippe Brillat
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.)
Buehler AG
Original Assignee
Buehler AG
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 Buehler AG filed Critical Buehler AG
Priority to EP13704442.6A priority Critical patent/EP2817575A1/fr
Publication of EP2817575A1 publication Critical patent/EP2817575A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/06—Long pasta, e.g. spaghetti
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/08—Short pasta, e.g. macaroni, vermicelli

Definitions

  • the present invention relates to a dryer for Lebensmit ⁇ tel, a method for drying of food products, a method for upgrading and / or converting a drier for foodstuffs and the use of a dryer for drying Lebensmit ⁇ stuffs.
  • the foods may be, in particular, pasta.
  • a fan For drying food, especially pasta, they are usually subjected to an air flow, which is generated by means of at least one fan.
  • a fan includes a housing and a rotatable rotor disposed therein which has one or more vanes which generate the air flow upon rotation of the rotor.
  • Such dryers for pasta are described for example in EP 551 464 Bl or WO 92/17074.
  • the fan and in particular its wings can contain only very specific materials for reasons of hygiene.
  • the wings are made of a metal such as steel or aluminum.
  • metals have the required stability in order to generate a sufficient air flow even at high rotational speeds .
  • they are also resistant to the typically prevailing in a food ⁇ dryer temperatures and relative humidities.
  • the materials mentioned do not tend even under these conditions to break off splinters that could get into the food with the air flow.
  • metals do not absorb water or airborne constituents of the food where they could lead to contamination. This must be avoided for hygienic and health reasons.
  • metal rotor blades also have a number of
  • a dryer for food in particular for pasta, which contains at least one treatment room and at least one fan for generating an air flow.
  • the treatment room is so out forms ⁇ that the food can be loaded in it and accommodated the air stream.
  • the fan contains a rotor with at least one wing.
  • the wing contains a plastic. Due to the lower densities of plastics compared to metals significantly lower drive power is required with the inventive wings, as is the case with metal wings with the same dimensions, which are driven at the same speeds. Conversely, with the same drive power, which are necessary for conventional metal wings, a larger air circulation are generated, which is particularly advantageous for long-goods dryer. For one thing, due to the lower moments of inertia, less energy is required for the acceleration when starting the fan. On the other hand, the lower mass also ensures smaller frictional forces. The bearings of the rotor are thereby less stressed, causing the fan has a longer life. Furthermore, on account of ⁇ due to the lower masses and the lower centrifugal forces significantly less vibration than with metal wings.
  • plastic material can be ge ⁇ into the desired shape easily, for example by injection molding. Injection molding also allows a higher precision of the surface structure of the wings; For example, in many cases, tolerances of less than 0.1 mm can be achieved, resulting inter alia in lower friction losses between the air and the vanes.
  • the plastic is preferably a polyamide.
  • Polyamide has proven to be particularly suitable, since it is to process simp ⁇ cher than the metal of conventional wings. In particular, it can be formed particularly well by injection molding. In addition, polyamide has a low porosity; Here ⁇ by unwanted water retention in the wings can be avoided. Moreover, polyamide is particularly resistant ge ⁇ gen Hydrolyse bine.
  • the plastic is glass fiber reinforced.
  • One such glass fiber reinforcement gives the wing increased stability, which is erfor ⁇ sary especially at high speeds.
  • a reinforcement with glass fibers also prevents particularly effective breaking out of splinters from the wing, which could otherwise get into the food.
  • the glass fibers are completely embedded in the plastic; The glass fibers therefore run completely inside the wing and do not exit on its surface, which is particularly advantageous for short-life dryers . In this way the surface of the wing can be special designed ⁇ DERS smooth. We also an off ⁇ breaking reduces the risk of splinters again.
  • the wing of a glass fiber reinforced plastic in particular a glass fiber reinforced polyamide.
  • glass fiber reinforced Polya ⁇ mid is particularly resistant to the usual climatic conditions that prevail in a dryer for food, particularly in a dryer for pasta.
  • temperatures of 95 ° C have no effect on the modulus of elasticity of the wing, and also relative humidities of up to 95% lead to no appreciable water absorption by the plastic, which could lead to its aging.
  • no plastic splinters break out of the wing and can get into the food.
  • the fan is designed as an axial fan ⁇ forms.
  • Such an axial fan allows a particularly space-saving design of the dryer.
  • the rotor of the fan may be at least two, preferably min ⁇ least three, more preferably at least four wings contained ⁇ th. In advantageous embodiments, it contains not more than six vanes.
  • the wings can be distributed uniformly in the circumferential direction around the rotor. However, it is also conceivable and within the scope of the invention that the wings are arranged at different angular distances from each other.
  • the rotor may have a diameter ranging from 200 mm to 1000 mm, preferably 300 mm to 800 mm and particular ⁇ DERS preferably from 400 mm to 630 mm.
  • the dryer can be a pasta dryer, in particular a long-goods dryer or a short-goods dryer. Such types of pasta dryers are known per se to those skilled in the art.
  • the fan may also be arranged in a known per se position within the dryer.
  • Another aspect of the invention relates to a method for drying food, in particular pasta, with a dryer as described above.
  • the food can be taken up or taken up in the treatment room of the dryer and there be acted upon by an air flow.
  • the air flow can be generated by means of the Ventila ⁇ sector, when the rotor rotates about an axis of rotation.
  • the air flow can be adjusted to a desired temperature and / or a desired relative humidity.
  • the rotor can be operated at a speed in the range of 1500 to 3000 rpm.
  • the invention also includes a method for upgrading and / or modification of a dryer for food, special to ⁇ a dryer for pasta.
  • the method includes a step in which a fan is provided wel ⁇ cher includes a rotor having at least one wing comprises the art ⁇ material.
  • the method may include a further step in which a fan already contained in the dryer is removed and replaced by a fan with a rotor, the wing of which contains a glass fiber reinforced plastic in particular, before ⁇ consists of a glass fiber reinforced plastic.
  • the invention also relates to the use of a dryer as described above for drying food, in particular pasta.
  • Figure 1 is a photographic representation of a first
  • Figures 2a and b show two views of a second embodiment of a rotor with blades made of a glass fiber reinforced plastic, which is part of a fan;
  • FIG. 3 shows a sketch of a perspective view of a dryer according to the invention
  • Figure 4 is a sketch of a side sectional view of the dryer.
  • FIG. 1 shows a rotor 5 of an axial fan for a dryer according to the invention.
  • the rotor 5 includes six wings 15 made of a glass fiber reinforced polyamide, which are attached to egg ⁇ ner hub 6 with an outer diameter of 255 mm.
  • the hub 6 has a central opening 7, with which the rotor 5 can be attached to a drive shaft.
  • the Wings 15 are equally spaced around the outer circumference of the hub 6 at an angular distance of 60 ° from one another. It is natuer ⁇ Lich also conceivable that the rotor 5 has a smaller or a larger number of wings 15 °.
  • the wings 15 have in the radial direction a length of 177.5 mm, which is measured from the outer periphery of the hub 6 to the outermost point of the wing 15; the rotor 5 thus has a total diameter of 610 mm.
  • the width of the wings 15 measured perpendicular to the axis of rotation is about 130 mm at the innermost point and about 185 mm at the outermost point.
  • the wings 15 are rotatable on the hub 6 be ⁇ consolidates. In this way, they can be fixed in different angles of attack relative to the axis of rotation. As is known per se to the person skilled in the art, the air flow and in particular the flow rate can thereby be adjusted.
  • FIGS. 2a and 2b show an embodiment of a Axi ⁇ alventilators 3 with a substantially cylindrical housing 4 and a rotor 5 'disposed therein.
  • This rotor 5 ' contains, in contrast to the rotor 5 of Figure 1, only three wings 15, which are arranged uniformly in the circumferential direction.
  • the number of wings 15, 15 ' can select ⁇ area in which the axial fan 3 to operate, among other things, depending on the power; this number of wings can be determined by the expert by routine experimentation.
  • the wings 15 'of the rotor 5' are made of glass fiber reinforced polyamide and therefore have the advantages described above.
  • the wings 15 'in FIG. 2 also have a length of 177.5 mm in the radial direction. Its measured perpendicular to Ro ⁇ tion axis R width is about 130 mm at the innermost point and about 185 mm at the outermost point.
  • the outer diameter of the rotor 5 ' should only be slightly smaller than the inner diameter of the housing 4 Extent of the blade 15 ', however, enlarges the diam ⁇ ser of the rotor 5' at operating conditions. Therefore, it is necessary in many cases that the diameter of the rotor 5 'is at room temperature chosen correspondingly smaller, so that the die ⁇ gel 15' at operating conditions (for example, at temperatures of about 95 ° C) not in contact with the inner wall of Gezza ⁇ ses 4 advised.
  • the wings 15 ' can be dimensioned so that their distance from the inner wall of the housing at room temperature ⁇ in the range of 2 mm to 4 mm. This distance then decreases under operating conditions.
  • FIG. 3 shows a dryer 1 for pasta according to the invention.
  • the dryer 1 contains a plurality of segments 11, 11 ', 11'',11''', each containing a treatment chamber 2, 2 ''.
  • the treatment room adjacent segments are mutually connected ⁇ ver.
  • the pasta not shown here, successively pass through the treatment rooms in the specified conveying direction F. If long goods are concerned, they are transported suspended on bars, for example in a manner known per se.
  • Figure 4 shows a side sectional view through one of the Seg ⁇ elements 11 perpendicular to the conveying direction F.
  • a side chamber 12 is arranged in which in each case an axial fan 3 in accordance with Figure 2 is located.
  • air streams L are generated by means of the axial fans. These move upwards in the lateral chambers 12, are then led laterally into an upper chamber 13 and subsequently introduced through a heat exchanger 9 into the treatment space 2.
  • the air flow L passes into a lower chamber 14, from where he again enters the lateral chambers 12 and there again is sucked in by the axial fans 3.
  • the heat exchanger 9 can be traversed by warm water, whereby the air flow L is heated.
  • the water can receive a portion of its heat energy directly or indirectly from a downstream in the conveying direction F segment of the dryer 1.
  • the glass fiber reinforced polyamide, from which the wings 15 'of the axial fans 3 are made, on the one hand characterized by a density which is lower than that of metal.
  • Glass fiber reinforced polyamide has especially also proven be ⁇ Sonder suitable for use in a pasta drier first Even at the temperatures usually used there of up to 95 ° C and relative humidities of up to 95%, the modulus of elasticity of Materi ⁇ barely changed, and it takes up virtually no water. Furthermore, the break-out of splinters and penetration into the treatment room 2 can be practically excluded, so that the relevant hygiene regulations are met in the food production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

La présente invention concerne un séchoir (1) pour des produits alimentaires, en particulier des pâtes. Le séchoir (1) contient au moins un espace de traitement (2 ; 2'' ;…), dans lequel les produits alimentaires peuvent être reçus et dans lequel ceux-ci sont soumis à un courant d'air (L). Il contient en outre au moins un ventilateur (3) pour la génération du courant d'air (L). Le ventilateur (3) comprend un rotor (5 ; 5') avec au moins une pale (15 ; 15'). La pale (15 ; 15') contient une matière plastique. L'invention concerne en outre un procédé de séchage de produits alimentaires, un procédé de montage et/ou de démontage d'un séchoir pour produits alimentaires, ainsi que l'utilisation d'un séchoir (1).
EP13704442.6A 2012-02-22 2013-02-15 Séchage de produits alimentaires, en particulier de pâtes, avec une pale de ventilateur contenant du plastique Withdrawn EP2817575A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13704442.6A EP2817575A1 (fr) 2012-02-22 2013-02-15 Séchage de produits alimentaires, en particulier de pâtes, avec une pale de ventilateur contenant du plastique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12156570.9A EP2631580A1 (fr) 2012-02-22 2012-02-22 Séchage d'aliments, notamment de produits à base de pâtes, doté d'un battant de ventilateur comprenant une matière plastique
PCT/EP2013/053052 WO2013124220A1 (fr) 2012-02-22 2013-02-15 Séchage de produits alimentaires, en particulier de pâtes, avec une pale de ventilateur contenant du plastique
EP13704442.6A EP2817575A1 (fr) 2012-02-22 2013-02-15 Séchage de produits alimentaires, en particulier de pâtes, avec une pale de ventilateur contenant du plastique

Publications (1)

Publication Number Publication Date
EP2817575A1 true EP2817575A1 (fr) 2014-12-31

Family

ID=47716053

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12156570.9A Withdrawn EP2631580A1 (fr) 2012-02-22 2012-02-22 Séchage d'aliments, notamment de produits à base de pâtes, doté d'un battant de ventilateur comprenant une matière plastique
EP13704442.6A Withdrawn EP2817575A1 (fr) 2012-02-22 2013-02-15 Séchage de produits alimentaires, en particulier de pâtes, avec une pale de ventilateur contenant du plastique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12156570.9A Withdrawn EP2631580A1 (fr) 2012-02-22 2012-02-22 Séchage d'aliments, notamment de produits à base de pâtes, doté d'un battant de ventilateur comprenant une matière plastique

Country Status (2)

Country Link
EP (2) EP2631580A1 (fr)
WO (1) WO2013124220A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2992285A1 (fr) 2013-04-30 2016-03-09 Bühler AG Dispositif et procédé pour sécher des produits à sécher, en particulier de produits alimentaires
CN107940978A (zh) * 2017-12-14 2018-04-20 泰州市玮华涂饰科技有限公司 一种特殊的铝合金轮毂镀膜用热喷气装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100158713A1 (en) * 2007-09-21 2010-06-24 Mitsubishi Heavy Industries, Ltd. Fan motor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR889291A (fr) * 1941-12-24 1944-01-05 Machine pour le saisissement et le séchage continu des pâtes alimentaires longues et courtes
BE757014A (fr) * 1969-10-04 1971-03-16 Schloz Motor Condensator
US4426792A (en) * 1978-06-16 1984-01-24 Best Willie H High turbulance heat transfer oven
AT403734B (de) * 1987-04-01 1998-05-25 Vanicek Friedrich Anordnung von axialventilatoren für holztrocknungsanlagen
DE4124928C2 (de) 1991-04-03 1993-12-02 Buehler Ag Verfahren und Vorrichtung zum Formstabilisieren von Teigwaren
WO1993002561A1 (fr) 1991-07-31 1993-02-18 Bühler AG Maschinenfabrik Procede et dispositif de compression et de sechage de pates alimentaires allongees et utilisation du dispositif
DE102004020178A1 (de) * 2004-04-22 2005-11-17 Linde Ag Ventilator für einen Lebensmittelfroster
DE102009014020A1 (de) 2009-03-23 2010-09-30 Bühler AG Verfahren und Vorrichtung zum Trocknen von Gütern

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100158713A1 (en) * 2007-09-21 2010-06-24 Mitsubishi Heavy Industries, Ltd. Fan motor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2013124220A1 *

Also Published As

Publication number Publication date
EP2631580A1 (fr) 2013-08-28
WO2013124220A1 (fr) 2013-08-29

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