EP1460362A2 - Plaque chauffante - Google Patents

Plaque chauffante Download PDF

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Publication number
EP1460362A2
EP1460362A2 EP04006746A EP04006746A EP1460362A2 EP 1460362 A2 EP1460362 A2 EP 1460362A2 EP 04006746 A EP04006746 A EP 04006746A EP 04006746 A EP04006746 A EP 04006746A EP 1460362 A2 EP1460362 A2 EP 1460362A2
Authority
EP
European Patent Office
Prior art keywords
heating plate
plates
plate according
vacuum drying
drying cabinet
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Withdrawn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
EP04006746A
Other languages
German (de)
English (en)
Other versions
EP1460362A3 (fr
Inventor
Jürgen Friedrich
Günter Wulf
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.)
Hermann Waldner GmbH and Co KG
Original Assignee
Hermann Waldner GmbH and Co KG
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 Hermann Waldner GmbH and Co KG filed Critical Hermann Waldner GmbH and Co KG
Publication of EP1460362A2 publication Critical patent/EP1460362A2/fr
Publication of EP1460362A3 publication Critical patent/EP1460362A3/fr
Withdrawn legal-status Critical Current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
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F26B5/044—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum for drying materials in a batch operation in an enclosure having a plurality of shelves which may be heated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems

Definitions

  • the invention relates to a heating plate, in particular for a vacuum drying cabinet, with a footprint and a heating chamber through which a heat transfer medium flows, which is formed by two plates connected to one another.
  • Heating plates which represent heated shelves, are used, for example, in drying cabinets for drying various products.
  • a heating plate which is part of the generally known prior art, is designed as a double plate, through which heat carriers, such as water, steam, thermal oil, etc., flow through at a predetermined temperature. A required drying temperature is thereby achieved on the surface of the heating plate.
  • tray trays are placed on these known heating plates and filled with products that need to be dried.
  • the tray temperature and thus the corresponding product are heated by the temperature of the heating plates.
  • This heating or drying is intensified by radiant heat which emanates from heating plates which are located above the product to be dried. Applying vacuum, i. H. by lowering the boiling pressure, the product evaporates or dries further.
  • a vacuum drying cabinet is known in this connection as known prior art (DE 100 28 895 A1).
  • This vacuum drying cabinet consists of a housing which is closed off by a door. Furthermore, there are a number of heating plates mounted on the inside, which, arranged one below the other and parallel to one another, fill the interior of the drying cabinet.
  • the object of the present invention is now to design a heating plate, such as is used for example for a vacuum drying cabinet, in such a way that a cost-effective production while improving the cleanability is achieved.
  • this object is achieved in that the plates and lateral connecting webs between the plates each have a trumpet-shaped taper.
  • This design has the advantage that the heating plate according to the invention can be cleaned properly.
  • the tapering areas preferably each have at least a quarter-circle radius.
  • the heating plate remains very flat, and this flatness of the heating plate is particularly important because it ensures good heat transfer. There is no indentation on the surface after welding.
  • the heating plate 1 shown in FIGS. 1 to 4 can be used in particular for a vacuum drying cabinet VT. It is equipped with a footprint 2 and with a heating chamber 3 through which a heat transfer medium flows. This heating chamber 3 is formed by two spaced-apart, interconnected plates 7, 8. Lateral connecting webs 11 and 12 and a front connecting web 13 are also provided.
  • the plates 7 and 8 and the lateral connecting webs 11 and 12 are each formed on the rear side H, in particular according to FIGS. 1 and 2, in a trumpet-shaped manner. This results in outgoing regions 16 and 17 or 18 and 19, which preferably each have at least a quarter-circle radius R or r. Furthermore, the plates 7, 8 each have the same shaped tapered areas, and in fact just like the lateral connecting webs 11 and 12.
  • the tapered areas 16 and 17 of the plates 7, 8 merge into flat surfaces 16 'and 17', which according to FIG Vacuum drying ovens VT are welded.
  • the front connecting web 13 and the lateral connecting webs 11 and 12 each have a radius which is preferably semicircular in cross section. Due to the outgoing areas 16 and 17 or 18 and 19 in the area of the rear side H and due to the semicircular connecting webs 11, 12 and 13, a heating plate 1 results overall, which has a considerably improved cleaning possibility.
  • each spacer bolt 35 has at the end a shoulder 37, 38 adjusted to the thickness of the respective plate 7, 8, each spacer bolt 35 being connected to the two plates 7, 8 by laser welding.
  • the heating plate 1 thus advantageously remains very straight with regard to the design of its surface. Good heat transfer is advantageously ensured.
  • FIG 3 and 4 show that at least two pipe sockets 40 for the inlet and outlet of the heat carrier are arranged between the two plates 7, 8 in the outlet area 16, 17. These pipe sockets 40 are each welded to the inside of the plates 7, 8.
  • the heating plate 1 Due to the design of the heating plate 1 according to the invention, it can be manufactured cost-effectively by machine, with radii being present on all sides on the mounting surface 2, and the heating plate is thus generally easy to clean. In addition, the production can be automated with little thermal energy, which results in little distortion results and the heating plate 1 is also largely mechanically inexpensive to manufacture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Drying Of Solid Materials (AREA)
  • Furnace Details (AREA)
EP04006746A 2003-03-19 2004-03-19 Plaque chauffante Withdrawn EP1460362A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20304442U 2003-03-19
DE20304442U DE20304442U1 (de) 2003-03-19 2003-03-19 Heizplatte

Publications (2)

Publication Number Publication Date
EP1460362A2 true EP1460362A2 (fr) 2004-09-22
EP1460362A3 EP1460362A3 (fr) 2005-09-07

Family

ID=7980956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04006746A Withdrawn EP1460362A3 (fr) 2003-03-19 2004-03-19 Plaque chauffante

Country Status (2)

Country Link
EP (1) EP1460362A3 (fr)
DE (1) DE20304442U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011095756A1 (fr) * 2010-02-05 2011-08-11 Powder Systems Limited Améliorations relatives à un sécheur

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10028895A1 (de) 2000-06-10 2001-12-13 Heinz Geisenhof Vakuum-Trockenschrank und Verfahren zum Trocknen und zur Reinigung des Vakuum-Trockenschrankes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1774860A (en) * 1926-03-08 1930-09-02 Nat Aniline & Chem Co Inc Metallic structure
GB730804A (en) * 1952-10-28 1955-06-01 John King & Son Enamellers Ltd Vitreous enamelled metal tray

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10028895A1 (de) 2000-06-10 2001-12-13 Heinz Geisenhof Vakuum-Trockenschrank und Verfahren zum Trocknen und zur Reinigung des Vakuum-Trockenschrankes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011095756A1 (fr) * 2010-02-05 2011-08-11 Powder Systems Limited Améliorations relatives à un sécheur

Also Published As

Publication number Publication date
DE20304442U1 (de) 2003-06-18
EP1460362A3 (fr) 2005-09-07

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