EP0194293B1 - Element a paroi pour sechoirs de produits a pate alimentaire - Google Patents

Element a paroi pour sechoirs de produits a pate alimentaire Download PDF

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Publication number
EP0194293B1
EP0194293B1 EP85904621A EP85904621A EP0194293B1 EP 0194293 B1 EP0194293 B1 EP 0194293B1 EP 85904621 A EP85904621 A EP 85904621A EP 85904621 A EP85904621 A EP 85904621A EP 0194293 B1 EP0194293 B1 EP 0194293B1
Authority
EP
European Patent Office
Prior art keywords
pasta
wall elements
wall element
drier
wall
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.)
Expired - Lifetime
Application number
EP85904621A
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German (de)
English (en)
Other versions
EP0194293A1 (fr
Inventor
Hermann Zwyssig
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
Priority claimed from CH4372/84A external-priority patent/CH663274A5/de
Application filed by Buehler AG filed Critical Buehler AG
Publication of EP0194293A1 publication Critical patent/EP0194293A1/fr
Application granted granted Critical
Publication of EP0194293B1 publication Critical patent/EP0194293B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/08—Parts thereof
    • F26B25/12—Walls or sides; Doors

Definitions

  • the invention relates to a pasta dryer with an insulation casing comprising the dryer, the side parts of which consist of individual wall elements which are curved outwards and can be braced in their edge regions against frame parts of the dryer.
  • a pasta dryer of the type specified above is known from the BÜHLER / BÜHLER-MIAG brochures TW 24032 D-1000-7801 BF and TW 24020 D 500 7810 BDO.
  • the insulation formwork of pasta dryers has to meet different requirements. On the one hand, this is to prevent significant energy from being released into the environment through the casing. A good insulation effect of a formwork also means that there are correspondingly large temperature differences between the innermost and outermost skin of the formwork, which leads to different thermal expansions on the formwork. In order to prevent air gaps from forming between the wall elements, it is known to cover their joints with sealing tapes. However, this solution can lead to the fact that, under extreme conditions, the wall elements can only be reattached after a long period of service work using additional sealing material. If, as is often the case today, flat panels are used for wall elements, the problem shown turns out to be even more unfavorable because the shape stability of these panels is lower.
  • wall elements In order to achieve better dimensional stability on the wall elements here, wall elements have already been used which have a slight curvature (large radius) in their central area and a greater curvature (smaller radius) at their edge areas (lower and upper end areas), which means that an improved dimensional stability could be achieved there - at least for a while (see the aforementioned BÜHLER / BÜHLER-MIAG brochures). With these wall elements, however, there is a risk that - not least also because of the different curvature of the wall elements - when larger temperature differences occur, there will be uneven stress distributions over the entire cross-section and thus the risk of cracks and leaks occurring in the area of mutual contact between the wall elements and the Frame parts is coming.
  • a pasta dryer is also known from DE-C-87 515 (BAERMANN), the casing of which is designed as an insulation casing.
  • the side parts of the dryer are not designed as individual wall elements. Rather, the entire dryer is designed as a continuous closed chamber, which e.g. can have a cylindrical, elliptical, primitive or other overall shape.
  • the object of the invention is to equip a pasta dryer with such insulation casing that, even when large temperature differences occur between the inside of the dryer and the surroundings of the dryer, the stress distribution is evened out over the entire cross-section and thus leads to a reduced risk of cracks and leaks occurring.
  • this object is achieved in a pasta dryer of the type mentioned at the outset in that the wall elements are curved in the form of a cylindrical section with a constant radius of curvature and the associated frame parts are designed accordingly.
  • the measures according to the invention also lead to a surprisingly dimensionally stable behavior of the wall elements even when there is a strong change in temperature and with large temperature differences, and that the risk of undesirable crack formation could be clearly reduced as a result of a noticeable homogenization of the stress distribution over the surface of the wall elements.
  • the pasta dryer according to the invention also always provided a very good sealing of the wall elements on the associated frame parts, even then, if there were major temperature differences.
  • the wall elements are preferably connected as a vapor barrier on their side facing the inside of the dryer with a plate, again preferably made of thin metal sheet, loosely inserted into the arch shape.
  • a plate again preferably made of thin metal sheet, loosely inserted into the arch shape.
  • a plate again preferably made of thin metal sheet, loosely inserted into the arch shape.
  • a plate again preferably made of thin metal sheet, loosely inserted into the arch shape.
  • a plate again preferably made of thin metal sheet, loosely inserted into the arch shape.
  • a plate again preferably made of thin metal sheet, loosely inserted into the arch shape.
  • a plate again preferably made of thin metal sheet
  • the holder only has to ensure that the inserted steel plate is held in sufficient shape, for example, on its outer circumference in relation to the wall element so that it cannot fall away from it again.
  • this can e.g. in a particularly advantageous manner in the form that such a wall element is provided on its entire outer circumference on its inside (ie the side of the wall element facing the interior of the dryer) with a profile seal, such as a rubber profile, which is arranged so that it supports the plate-shaped vapor barrier against the wall element.
  • the plate-shaped vapor barrier does not protrude laterally from such a profile seal, such as a rubber seal (ie that the rubber seal is arranged around the edge region of the wall element such that the plate-shaped vapor barrier is surrounded by the seal in its peripheral edge region with their lateral edges not protruding beyond the surface area enclosed by the seal). Since the vapor barrier is only inserted into the holder, but should not be rigidly connected to the wall element and therefore there is no fixed (rigid) connection between the vapor barrier and the wall element, the vapor barrier can also expand independently of the wall element under the influence of temperature without the occurrence of undesirable forced stresses or pull together and is still held sufficiently well by the profile seal against the wall element. The occurrence of undesirable constraint stresses can be almost completely avoided, which is a very important advantage over known designs.
  • a profile seal such as a rubber seal
  • a further advantageous embodiment of the invention consists in that the wall elements consist of foam or another insulation material which has a resistant outer skin, the outer skin of the wall element facing the dryer interior being provided with one or more grooves.
  • the grooves for example in the form of two to six fingers deeply distributed on the surface, not only result in a further consolidation of the shape of the wall element in question, but at the same time also enable a reduction in the length changes of the external dimensions that occur on the inside of the wall (for example due to higher temperatures) whereby it can be achieved that almost no undesirable thermal stresses occur. Since these grooves are completely covered by the vapor barrier (metal sheet), they do not create any dirt traps, which is also a quick and thorough process. Cleaning such a dryer allowed.
  • a further advantageous embodiment of the invention also consists in the fact that each wall element is suspended from hinges on its upper side and can be pressed against the corresponding frame parts by means of clamping elements arranged on its underside, it being particularly advantageous if hinges are each arranged directly (vertically) above clamping elements are. This allows a further practical practical handling when performing maintenance work. At the same time it is achieved that due to the weight of the respective outwardly curved wall element, it already fits well against the corresponding frame parts of the pasta dryer without additional force. By means of the tensioning elements it is possible to ensure a completely tight seal on the entire circumference of the vapor barrier (wall element) with only slight deformation of the sealing profile and thus even when there are slight manufacturing inaccuracies.
  • Each wall element is preferably assigned a support arm which is attached to the frame part and can be folded down. If cleaning or other service work is to be carried out, two or three quick-release fasteners can be opened quickly with just a few hand movements, the bottom wall element pulled away with one hand and the support arm holding it in an open position with the other hand into the desired position Position. In this way, downtimes can be significantly reduced compared to known solutions.
  • the wall elements are designed with the same wall thickness over their entire surface. Since a vapor barrier can be inserted on the inside, the wall elements can be selected in accordance with the other requirements in terms of their qualitative structure and the thickness of the insulation material, regardless of the vapor barrier.
  • the typical pasta dryer 1 shown in FIG. 1 has an open front end.
  • Conveying means (not shown), such as bar transport systems, a belt or vibratory conveyor, etc., are to be arranged in its interior, but are not shown in the drawing for the sake of clarity.
  • An air distribution space 2 and 3 each extend over the entire length of the pasta dryer 1.
  • an upper and a lower circulation space 5 and 6 are provided separated by an intermediate wall 4, the air movement being forced by a sufficient number of fans 7 .
  • Heating cooling and other heating elements are also present, but are not shown in detail in FIG. 1.
  • the pasta dryer 1 is surrounded at the top and bottom by flat insulation plates 8 and 9 and laterally by bulging wall elements 10, the latter having an arcuate shape in the form of a cylindrical section (i.e. they are curved with a constant radius over the height).
  • the wall elements 10 are fastened at the top by two hinges 11 to the frame parts 13 (a frame part 13 lying at the front, which is adapted to the curvature of the wall element 10, is only shown in broken lines in FIG. 1).
  • the wall elements 10 can be pressed sealingly against the frame parts 13 present there by two quick-action fasteners 12, so that each wall element that can be opened upwards like a door can also be easily pivoted outwards again after the quick-release fasteners 12 have been released.
  • the frame elements 13 are all adapted to the corresponding shape of the wall elements 10. While this leads to a curvature of the frame part 13 there corresponding to the inner curvature of the wall element 10 in the frame parts 13 running from top to bottom, as shown in dash-dotted lines in FIG. 1, this means for the frame parts 13 located in the longitudinal direction of the dryer below that their end edges , to which the wall elements 10 are pressed at the bottom, have a shape adapted to the curvature at least over the edge surface.
  • FIG. 2 shows a wall element 10 in a view from the inside of the dryer.
  • a rubber profile seal 15 runs around the outside of the wall element along the outer edge of the inner surface and is held in place by means of a holding plate 16 (cf. FIGS. 4 and 5).
  • Three horizontal grooves 17 (see FIG. 2) ensure that undesired thermal expansions between the inner skin 18 and the outer skin 19 (FIGS. 2 and 5) can be absorbed in wall panels of only a short extent.
  • the wall element 10 has an insulating material 20 in its interior which, depending on the desired requirements, e.g. can be selected as a foam with glass fiber reinforcement or as another suitable effective insulating material.
  • a metal plate 21 is held by the sealing profile 15 and loosely inserted in a receptacle holder on the inner curvature of the wall element 10 (FIGS. 4 and 5), which serves as a vapor barrier and in particular also represents a shield against the temperature of the interior of the dryer.
  • the vapor barrier 21 extends between the seal 15 and the outer skin 18 and is pressed against the outer skin 18 by the seal 15, which in turn is carried by the holding bracket 16 fastened to the wall element 10. In this way, a sufficiently firm holder is achieved, which reliably prevents the plate-shaped vapor barrier 21 from this holder (which is all around the vapor barrier 21) is) could fall out. However, the plate-shaped vapor barrier 21 under the rubber seal 15 is not blocked against expansion or contraction caused by thermal stresses, i.e. it can expand or contract undisturbed in its longitudinal direction, i.e. parallel to the surface of the outer skin 18, despite the continuous pressing action of the rubber seal 15 .
  • the metal plate 21 can thus expand or contract almost without hindrance as a result of this chosen loose holder, without this resulting in undesirable forced stresses in it. There is also no deviation in the shape of the curvature which it assumed when it was inserted into the holder and which corresponds to the internal curvature of the wall element 10. As long as the metal plate 21 is held in its outer edge area against slipping, it can no longer fall out of the circumferential fastening, even when the convertible element is open. In the embodiment shown, the metal plate 21 also does not protrude laterally from the rubber seal 15, ie towards the side of the rubber seal 15 which does not face the area of the metal plate 21 enclosed by the rubber seal 15: this effectively prevents an undesirable thermal bridge from reaching the outside could arise.
  • the reference symbol R is used to indicate that the curvature of the wall element has the same radius R (from, for example, 1 to 3 m) over its entire height. Even with large temperature differences of up to 100 ° C. or more, length changes occurring in the holding element can hardly change the size of this radius R, as a result of which the plate 21 is always kept in a completely sealed position via the hinges 11 and the quick-action fasteners 12.
  • the embodiment of a dryer shown in the figures has a surprisingly high dimensional stability both in the cold and in the hot state.
  • the metal plate 21 has proven to be a completely perfect vapor barrier and there is almost no air loss even with slight air pressure inside the pasta dryer.
  • the pasta dryer shown can be cleaned almost optimally and also has a particularly pleasing shape on the outside.
  • the invention also includes a method for simply and effectively lining the wall elements with a vapor barrier by loosely inserting a thin, vapor-impermeable sheet or other suitable thin, flexible, plate-shaped material into an edge holder attached to the inside of the wall element (with the effect that it is thin Vapor barrier adapts itself to the curvature of the holding element and can move freely within the holder even under the influence of temperature, although it is otherwise held well by the holder).
  • This makes it possible for the first time to produce an edge element with an effective vapor barrier in a cost-effective, quick and simple manner and without the occurrence of undesirably large forced stresses at large temperature differences and the risk of crack formation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Dans un séchoir pour produits à pâte (1) doté d'une enveloppe isolante qui entoure le séchoir, et dont les éléments latéraux sont composés d'éléments de paroi latéraux (10) extérieurement convexes pouvant être serrés dans leurs régions périphériques contre des sections de cadre (13) du séchoir, les éléments de paroi (10) sont dessinés avec un profil convexe en forme de section de cylindre, et les sections de cadre correspondantes (13) sont dotées d'une forme qui s'y adapte.

Claims (10)

1. Séchoir de pâtes alimentaires, comportant un revêtement d'isolation (8, 9, 10) qui entoure le séchoir (1) et dont les éléments latéraux sont constitués par différents éléments de paroi (10) bombés vers l'extérieur et pouvant être appliqués par serrage, dans leurs zones marginales, sur des éléments de châssis (13) du séchoir (10), caractérisé en ce que les éléments de paroi (10) sont bombés en forme de secteurs cylindriques à rayon de courbure (R) constant et en ce que les éléments de châssis (13) associés sont agencés de façon à leur être adaptés.
2. Séchoir de pâtes alimentaires suivant la revendication 1, caractérisé en ce que, sur leur face tournée vers l'intérieur du séchoir, les éléments de paroi (10) sont revêtus d'un panneau (21) posé librement sous sa forme cintrée et servant d'écran à la vapeur d'eau.
3. Séchoir de pâtes alimentaires suivant la revendication 2, caractérisé en ce que l'écran à la vapeur d'eau consiste en une tôle mince.
4. Séchoir de pâtes alimentaires suivant l'une des revendications 1 à 3, caractérisé en ce que les éléments de paroi (10) sont constitués d'un matériau alvéolaire, ou autre matériau d'isolation, (20) et d'une peau extérieure résistante, tandis que la peau extérieure tournée vers l'intérieur du séchoir comporte une ou plusieurs gorges (17).
5. Séchoir de pâtes alimentaires suivant l'une des revendications 2 à 4, caractérisé en ce que, le long de tout son contour périphérique et sur sa face intérieure, chaque élément de paroi (10) est pourvu d'un profilé en caoutchouc (15) qui constitue en même temps un appui pour l'écran à la vapeur d'eau (21).
6. Séchoir de pâtes alimentaires suivant la revendication 5, caractérisé en ce que, latéralement, l'écran à la vapeur d'eau (21) ne dépasse pas le profilé en caoutchouc (15).
7. Séchoir de pâtes alimentaires suivant l'uné des revendications 1 à 6, caractérisé en ce que, sur son côté supérieur, chaque élément de paroi (10) est suspendu à des charnières (11) et en ce que, à l'aide d'éléments de serrage (12) disposés sur son côté inférieur, il peut être appuyé sur les éléments de châssis (13) associés.
8. Séchoir de pâtes alimentaires suivant la revendication 7, caractérisé en ce que les charnières (11) sovo disposées respectivement pratiquement à la verticale au-dessus des éléments de serrage (12).
9. Séchoir de pâtes alimentaires suivant l'une des revendications 1 à 8, caractérisé en ce qu'à chaque élément de paroi (10), il est associé un bras de support (14) qui est fixé sur l'élément de châssis (13) associé et qui peut être rabattu vers le bas.
10. Séchoir de pâtes alimentaires suivant l'une des revendications 1 à 9, caractérisé en ce que les éléments de paroi (10) ont une épaisseur uniforme sur toute leur surface.
EP85904621A 1984-09-13 1985-09-09 Element a paroi pour sechoirs de produits a pate alimentaire Expired - Lifetime EP0194293B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH4372/84 1984-09-13
CH4372/84A CH663274A5 (en) 1984-09-13 1984-09-13 Farinaceous-product dryer with outwardly rounded wall elements
DE3439860 1984-10-31
DE19843439860 DE3439860A1 (de) 1984-09-13 1984-10-31 Teigwarentrockner mit einer den trockner umfassenden isolationsverschalung

Publications (2)

Publication Number Publication Date
EP0194293A1 EP0194293A1 (fr) 1986-09-17
EP0194293B1 true EP0194293B1 (fr) 1990-08-29

Family

ID=25695301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85904621A Expired - Lifetime EP0194293B1 (fr) 1984-09-13 1985-09-09 Element a paroi pour sechoirs de produits a pate alimentaire

Country Status (4)

Country Link
US (1) US4774773A (fr)
EP (1) EP0194293B1 (fr)
JP (1) JPH0692868B2 (fr)
WO (1) WO1986001883A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH665018A5 (fr) * 1985-07-10 1988-04-15 Luxia Limited Enceinte pour le sechage des pates alimentaires et produits analogues.
US5447003A (en) * 1990-05-17 1995-09-05 Warren; Russell D. Method and apparatus for insulating a lumber kiln
US5138773A (en) * 1990-12-05 1992-08-18 U.S. Natural Resources, Inc. Drying kiln for lumber having insulation
JPH06309549A (ja) * 1993-04-20 1994-11-04 Fuji Electric Co Ltd 自動販売機の電照板取付装置
DE10045878A1 (de) * 2000-09-14 2002-03-28 Buehler Ag Doppelhüllen-Trockner
US7481007B2 (en) * 2002-04-05 2009-01-27 Buhler Ag Sealing arrangement
DE102004056404B4 (de) * 2004-11-23 2019-05-09 Dürr Systems Ag Trockner
DE102004061791A1 (de) 2004-12-22 2006-07-06 Dürr Systems GmbH Elektrotauchlackieranlage
DE102006030334A1 (de) * 2006-06-30 2008-01-03 Dürr Systems GmbH Trocknermodul für einen Trockner
DE102006055297A1 (de) 2006-11-23 2008-05-29 Dürr Systems GmbH Werkstückträger zum Fördern eines zu lackierenden Werkstücks
US20100071225A1 (en) * 2008-09-19 2010-03-25 Shannon Ross Portable cooler drying frame
CA2762445A1 (fr) * 2011-02-10 2012-08-10 Michael Kloepfer Rechaud pour vehicule a conteneur de materiaux en vrac
US9958206B1 (en) * 2014-12-19 2018-05-01 Arron Duvall Curing oven
CN105698519A (zh) * 2016-03-05 2016-06-22 何朝武 一种带有语音提示功能的烘干***

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DE490478C (de) * 1930-01-29 Heinrich Rackebrandt Aus Metall hergestellte Tueren, Schieber oder Verschlusse fuer Trockenanlagen und andere OEfen
DE87515C (fr) * 1895-05-23 1896-07-03
US1891802A (en) * 1929-02-02 1932-12-20 William F Drew Oven
DE1080487B (de) * 1956-03-03 1960-04-21 Buehler Ag Geb Trockner, insbesondere fuer Teigwaren
CH368424A (de) * 1958-10-27 1963-03-31 Buehler Ag Geb Trocknerwand aus wasserdurchlässigen Isolierplatten
US3149477A (en) * 1963-01-29 1964-09-22 Henry H Bivins Vegetable produce cooler
JPS5020079U (fr) * 1973-06-20 1975-03-06
US4254960A (en) * 1979-06-18 1981-03-10 Parker-Hannifin Corporation Sealing device
FR2523708A1 (fr) * 1982-03-18 1983-09-23 Bassano Co Panneau isolant pour sechoirs

Non-Patent Citations (1)

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Title
Prospekte des Firma Bühler / Bühler-Miag, TW24032D-1000-7801BF und TW24020D5007810BDO *

Also Published As

Publication number Publication date
US4774773A (en) 1988-10-04
WO1986001883A1 (fr) 1986-03-27
EP0194293A1 (fr) 1986-09-17
JPS62501028A (ja) 1987-04-23
JPH0692868B2 (ja) 1994-11-16

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