FR2788402A1 - Holder for holding thermal resistances inside oven or drying furnace not exceeding 1200degreesC has post crossing insulating lining placed in ceramic crossbar - Google Patents

Abstract

Resistance holder comprises removable post (1) crossing insulating lining (5) placed in ceramic crossbar (2). Crossbars are attached to metallic framework (6) and are held in place with hooks (3). Post touching resistance (4) is made with same material, hence has same characteristics, as for resistance.

Description

The present invention relates to a method of supporting resistors

  electrical in oven or oven linings made from flexible and light insulating blocks of the ceramic fiber type. alkaline earth fiber or

mineral fiber.

  This process makes it possible to use a steel used to suspend the electrical resistance perfectly compatible with the resistance since likewise

  nuance and the same characteristic.

  Currently. the processes used to suspend the resistors in this type of packing are ceramics. which produces on contact with the

  1o resistance and its support. oxidation phenomena.

  Our process, the subject of our patent application, allows instant replacement intervention in the event of degradation of the support without destroying

the existing upholstery.

  On the other hand. it minimizes any thermal path with the carcass or

  the metal frame wrapping the lining of the oven or oven.

  The accompanying drawings illustrate the invention: - Figure 1 shows in section the principle of the invention - Figure 2 shows a variant of attachment to the structure

outside the lining.

  Referring to Figure 1. the device comprises a bar (1) of shade compatible with the electrical resistance whose role is to maintain

suspends the resistors.

  This bar is itself held in position by bars (2): _ ceramics inserted at the very heart of the lining and therefore protected from thermal radiation and at the same time of low thermal inertia

  since distant and isolated from the fire zone.

  These reference bars 2 have inclined holes in order to support

several suspension bars.

2 2788402

  The bars (2) are linked to the metal structure (6) serving as support for the insulating coating by metal hooks (3) of suitable shade in order to resist the phenomenon of corrosion and to resist mechanical stresses. This connection with the metal structure can be achieved either by internal welding or by the threading process (see sketch fig. 2). The principle according to the invention is particularly intended for supporting electrical resistances in linings made of flexible and light insulating blocks offering no mechanical strength for thermal enclosures

  the temperature of which inside does not exceed 1200 C.

  io The invention therefore relates to a device for suspending electrical resistances in flexible fibrous paving stones, characterized in that it comprises a movable bar (1) passing through the thermal insulating lining (5) being housed in a ceramic bar (2) which is held in position by

hooks (3).

  The material constituting the movable bar (1) in contact with the resistor is of the same nature and of the same characteristic and therefore compatible with the resistor. The movable bar (1) has two fixed stops, one used to keep the electrical resistances (4) at a distance from the lining (5), the other used to ensure a constant distance between the bar (2) and the resistance ( 4). The bars made of ceramic (2) crossed by bars (1) have inclined holes in order to receive several bars therein and are connected to the structure (6) supporting the lining (5) by hooks (3)

  made of refractory stainless steel (fig. 1).

  The fixing hook (3) of the bars (2) is held in position against the

  structure (6) by external bolting (fig. 2).

Claims (4)

  1 / Device for the suspension of electrical resistances in paving blocks of flexible fibrous material, characterized in that it comprises a movable bar (1) passing through the thermal insulating lining (5) being housed in a bar   ceramic (2) which is held in position by hooks (3).   2 / Device according to claim 1 characterized in that the material constituting the bar (1) in contact with the resistor (4) is of the same nature   and of the same characteristic and therefore compatible with the resistance (4).   3 / Device according to claim 1 and claim 2 characterized in that the movable bar (1) has two fixed stops, one serving to keep the electrical resistances (4) at a distance from the lining (5), the other serving to ensure a constant distance between the bar (2) and the resistance (4). 4 / Device according to claim 1. claim 2 and claim 3 characterized in that the bars made of ceramic (2) crossed by the bars (1) have inclined holes to receive several bars (1).    / Device according to any one of the preceding claims   characterized in that the bars (2) are connected to the structure (6) supporting the lining (5) by hooks (3) made of refractory stainless material (fig. 1) 6 / Device according to claim 4 characterized in that the fixing hook (3) of the bars (2) is held in position against the structure (6) by external bolting (fig. 2).