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EP0828126B1 - Belüftungsvorrichtung zur Trocknung von Produkten, insbesondere Formkörper welche nachher auszuhärten sind - Google Patents

Belüftungsvorrichtung zur Trocknung von Produkten, insbesondere Formkörper welche nachher auszuhärten sind Download PDF

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Publication number
EP0828126B1
EP0828126B1 EP97402057A EP97402057A EP0828126B1 EP 0828126 B1 EP0828126 B1 EP 0828126B1 EP 97402057 A EP97402057 A EP 97402057A EP 97402057 A EP97402057 A EP 97402057A EP 0828126 B1 EP0828126 B1 EP 0828126B1
Authority
EP
European Patent Office
Prior art keywords
opening
axis
box
box structure
air flow
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
EP97402057A
Other languages
English (en)
French (fr)
Other versions
EP0828126A1 (de
Inventor
Philippe Hatton
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.)
Ceric SARL
Original Assignee
Ceric SARL
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Filing date
Publication date
Application filed by Ceric SARL filed Critical Ceric SARL
Publication of EP0828126A1 publication Critical patent/EP0828126A1/de
Application granted granted Critical
Publication of EP0828126B1 publication Critical patent/EP0828126B1/de
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
    • 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
    • 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
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F26B21/022—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure with provisions for changing the drying gas flow pattern, e.g. by reversing gas flow, by moving the materials or objects through subsequent compartments, at least two of which have a different direction of gas flow
    • F26B21/024—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure with provisions for changing the drying gas flow pattern, e.g. by reversing gas flow, by moving the materials or objects through subsequent compartments, at least two of which have a different direction of gas flow by using movable fan units

Definitions

  • the present invention relates to a ventilation device for drying of stacked products according to the preamble of claim 1.
  • a ventilation device for drying of stacked products according to the preamble of claim 1.
  • Such a device is known from EP-A-0 017 665. It is more particularly intended for industry ceramic and for example the drying of raw products in the ground before their passage in a baking oven.
  • Ventilation vertical or horizontal axis, which either have an energy efficiency insufficient or require a plurality of fans.
  • the present invention relates to a ventilation device which has good better performance than known devices.
  • the present invention relates to a ventilation device for drying stacked products of the type comprising a box provided on the one hand with a fan and on the other hand, outlet openings, the fan being arranged at the end of said box to propel an air flow characterized by the fact that the axis of the ventilation flow makes with the plane containing the outlet opening an angle "a" such that this opening cuts totally fan flow.
  • the invention also relates to a drying enclosure comprising, between the rows of products to be dried in the corridors in which circulation devices circulate ventilation according to the present invention.
  • Figure 1 a front view and in section along AA of a device for ventilation with known vertical axis.
  • Figure 2 three views in side elevation, from behind and in plan of a ventilation device with horizontal axis of known type.
  • Figure 3 a side elevational view of an axis ventilation device oblique according to the invention
  • Figure 4 a front view of the ventilation device in Figure 3.
  • FIG. 5 a partial perspective view of the ventilation device Figures 3 and 4.
  • Figure 6 a top view of the ventilation device of Figures 3 to 5.
  • Figure 7 a side elevational view of an alternative embodiment of the invention.
  • FIG. 1 and 2 show two ventilation devices of known type; FIG. 1 representing a device with a vertical axis and FIG. 2 a device with a axis horizontal.
  • the device consists of a cylinder 10, with a vertical axis, surmounted by a fan 11, driven by a motor 12 and comprising two lateral openings 13 and 14 located along two generators diametrically opposite
  • This device has two drawbacks. The first is that the air flow entering the cylinder through the opening 15 causes a venturi effect which has for result that there is no blown air on the stacks at the top of the cylinder (about 50 cm) but on the contrary a slight aspiration. Products B located at upper part of the A stacks are therefore poorly dried.
  • the second drawback is that the enclosure of the cylinder 10 must be pressurized so that the air is blown horizontally through the longitudinal slots 13 and 14. This necessary pressurization constitutes a loss of energy so that the efficiency of the device in is affected.
  • the ventilation device comprises a box 20 which comprises two side openings 24, opposite, extending over the entire height of said box 20.
  • a plurality of fans 21 are arranged one above the other over the entire height and are arranged to blow the drying air in one direction represented by the arrow fl. This air flow is deflected 90 ° on one side and 90 ° on the other by covers 23 which divide the air flow into two opposite streams f2 which arrive at the openings 24.
  • This device has the advantage of eliminating the two drawbacks of the device of Figure 1 but has the disadvantage of requiring a large number of fans 21, each driven by a motor 22 and therefore to be expensive, more the 90 ° deflection of the air flow causes energy loss.
  • the present invention relates to a ventilation device having neither the drawbacks of the device of FIG. 1 nor that of FIG. 2.
  • This device consists of a box 30 provided at its upper part a circular opening 35 in which is placed a fan 31 driven by a motor 32, and the outlet opening 33 of said box 30 is in a plane which is oblique to the X axis of the box which is also the axis of the air flow.
  • the X axis of the air flow is oblique and the outlet opening 33 of the box 30 is in a vertical plane.
  • the box 30 is a rectangular parallelepiped of which the X axis is arranged obliquely, and the fan 31 is placed in the casing 30 so that the axis of the air flow which it causes coincides with the X axis of the box.
  • the section of the parallelepiped 30 by a vertical plane is a rectangle 33 whose short side is equal to the side of the square section of the box 30; the angle "a" that makes the X axis with said vertical plane is determined so that the long side of said rectangle 33 has a length substantially equal to the height "h" of the stacks A.
  • this angle "a” is approximately 30 °. In practice it must be between 20 ° and 40 ° but whatever the value of this angle "a", it is such that the outlet opening 33 completely cuts off the flow of the fan 31.
  • the enclosure of drying 40 comprises several pairs C of rows of stackings A between which are created in corridors D.
  • the enclosure of drying 40 comprises several pairs C of rows of stackings A between which are created in corridors D.
  • a plurality of ventilation devices E are move in corridors D, each ventilation device E being in accordance with device described in Figures 3 to 5.
  • the box 30 has a section square slightly larger than the diameter of the fan 31, this arrangement being geometrically the most convenient. But it is obvious that to adapt the box air distribution constituted by the opening 33, the slats and the plate 36 can adapt the dimensions of the rectangular parallelepiped constituting the box 30; the invention being in no way limited to the embodiment chosen.
  • the air flow leaving through the orifices 13 and 14 was partly high oriented at about 45 ° obliquely downwards, this obliquity decreasing gradually to be practically zero at about 50 cm from the entrance of the box, but the speed of the flow was very low at the top so as not to reach its maximum at the base of the box.
  • the invention is not limited to the case where the box 30 is a rectangular or square section.
  • This box can indeed be a cylinder whose directrix can be a circle where an ellipse in this case the opening 33 is an ellipse and the dimensions of cylinder 30 and the value of angle "a" must be determined so that the major axis of the ellipse is practically equal to "h".
  • Figure 7 shows an alternative embodiment which is in fact the second possible alternative embodiment of the invention: in the first case ( Figures 3 to 6) the X axis is oblique and the opening 33 vertical; in the second case (figure 7) the X axis is vertical and the opening 33 oblique. Apart from that all the elements are the same and carry therefore the same references.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (8)

  1. Belüftungsvorrichtung zum Trocknen aufeinander gestapelter Produkte, der Art mit einem Kasten (30), der einerseits mit einem Ventilator (31) und andererseits mit Auslaßöffnungen (33) versehen ist, wobei der Ventilator am Ende des Kastens angeordnet ist, um dorthin einen Luftstrom zu blasen, dadurch gekennzeichnet, daß die Achse (X) des Belüftungsstroms mit der Ebene, welche die Auslaßöffnung (33) enthält, einen Winkel "a" bildet derart, daß diese Öffnung den Strom aus dem Ventilator vollständig schneidet.
  2. Belüftungsvorrichtung nach Anspruch 1, bei der die Auslaßöffnung (33) mit mehreren Lamellen (34) versehen ist, die an einer Platte (36) befestigt sind, welche in einer parallel zu der die Öffnung (33) enthaltenden Ebene verlaufenden Ebene liegt, so daß der Luftstrom in horizontale Richtungen (F2) abgelenkt wird, die praktisch senkrecht zu den Stapelreihen (a) zu trocknender Produkte verlaufen.
  3. Vorrichtung nach Anspruch 2, bei der die Abmessungen des Kastens (30) und der Wert des Winkels "a" so bestimmt sind, daß die Höhe (H) der Öffnung (33) im wesentlichen der Höhe (h) der Stapel (A) der zu trocknenden Produkte entspricht.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, bei der die Auslaßöffnung (33) des Kastens (30) vertikal liegt, wobei die Achse (X) des Kastens (30) und des Luftstroms schräg verläuft.
  5. Vorrichtung nach einem der Ansprüche 1 bis 3, bei der die Achse (X) des Kastens (30) und des Luftstroms vertikal liegt, während die Ebene, welche die Öffnung (33) des Kastens (30) enthält, schräg verläuft.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, bei dem der Kasten (30) ein Zylinder und die Öffnung (33) oval ist.
  7. Vorrichtung nach einem der Ansprüche 1 bis 5, bei dem der Kasten (30) parallelepipedförmig und die Öffnung (33) rechteckig ist.
  8. Trockenraum (40), in dem parallele Reihen (C) von Stapeln (A) angeordnet sind, die zwischen sich Gänge (D) ausbilden, in denen Belüftungsvorrichtungen (E) nach den Ansprüchen 1 bis 7 sich bewegen.
EP97402057A 1996-09-04 1997-09-04 Belüftungsvorrichtung zur Trocknung von Produkten, insbesondere Formkörper welche nachher auszuhärten sind Expired - Lifetime EP0828126B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9610757A FR2752925B1 (fr) 1996-09-04 1996-09-04 Dispositif de ventilation perfectionne pour le sechage de produits, notamment de produits crus destines a etre ensuite cuits
FR9610757 1996-09-04

Publications (2)

Publication Number Publication Date
EP0828126A1 EP0828126A1 (de) 1998-03-11
EP0828126B1 true EP0828126B1 (de) 2001-05-23

Family

ID=9495415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97402057A Expired - Lifetime EP0828126B1 (de) 1996-09-04 1997-09-04 Belüftungsvorrichtung zur Trocknung von Produkten, insbesondere Formkörper welche nachher auszuhärten sind

Country Status (4)

Country Link
EP (1) EP0828126B1 (de)
AT (1) ATE201505T1 (de)
DE (1) DE69704914T2 (de)
FR (1) FR2752925B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2967487A1 (fr) * 2010-11-15 2012-05-18 Hatton Philippe Marcel Emilien Dispositif destine a guider et redresser le flux d'air des appareils de ventilation rotatifs utilises pour le sechage dans l'industrie des tuiles et briques

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR22590E (fr) * 1919-08-27 1921-07-23 Pilade Barducci Système et appareil pour la ventilation de chambres de séchage
GB236998A (en) * 1924-04-14 1925-07-14 Drying Systems Inc Equalized distribution system for fluids
FR699030A (fr) * 1930-07-17 1931-02-09 Procédé et appareil de séchage d'objets au moyen de courants se déplaçant dans le local
US2852311A (en) * 1955-04-22 1958-09-16 Ind Ovens Inc Gas distributor head
FR1191253A (fr) * 1957-02-20 1959-10-19 Installation de séchage
DE2554406A1 (de) * 1975-12-03 1977-06-08 Max Wagner Vorrichtung zum trocknen keramischer formlinge
US4060914A (en) * 1976-08-18 1977-12-06 Proctor & Schwartz, Inc. Apparatus for treating material with a gaseous medium
GB2039013B (en) * 1978-12-22 1983-02-16 Drytech Eng Ltd Drying apparatus
DE2914243C3 (de) * 1979-04-09 1986-03-27 Keller Ofenbau GmbH, 4530 Ibbenbüren Anlage zum rhythmischen Trocknen von keramischen Formlingen

Also Published As

Publication number Publication date
FR2752925B1 (fr) 1998-10-09
EP0828126A1 (de) 1998-03-11
ATE201505T1 (de) 2001-06-15
DE69704914T2 (de) 2001-11-22
FR2752925A1 (fr) 1998-03-06
DE69704914D1 (de) 2001-06-28

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