US1637659A - Thermoelectric oven - Google Patents

Description

. Aug. 2,1927.

5. SACERDOTE THERMOELECTRI C OVEN Filed April '7. 1926 l JIM Patented Au z, 1927.

jUNiran-fsrA-Tas PATENT OFFICE.

' saconno saoanno'ra, or MILAN, rramr.

V an'oven' that tribution an THERHOELECTRIC OVEN.

' Applicatlon April 7, 1926, Serial No. 100,376, and in Germany April 18, 1935.

This invention relates to thermo-electric ovens and has for its object to so construct 'rfect uniformity in the dis- I regulation of the temperature' in the heating chamber is obtained.

According to the invention heating ele ments are disposed in channels made in tiles placed in such-a manner as to prevent direct radiation of the heat towards the bottom plate of the heating chamber by deflecting it towards the top or roof which reflects this heat uniformly distributed towards the said bottom plate. The'improved oven is further characterized in that the said heating elements do not occupy the whole length of the said chamber and are themselves capable of being displaced therein in such a manner as to permit a transverse regulation of theheat upon the bottom plate. Finally the oven is characterized in that it permits the combination of this indirect heating with a heating by thermo-electric accumulation.

The single figure of the accompanying drawing is a fragmental longitudinal section showing, as an example, one embodiment of the invention. In the heating chamber 1 are placed channels 2, 2 and 2" which face towards the ceiling or root 3 in such a Inannor as to intercept the radiant heat of the thermo-electric elements 4, 4 4, which would tend to radiate towards the bottom 5.

, These channels are lined with an insulating substance which may, for example, comprise iron enamelled with an insulating enamel and thereby reflect the heat. The roof or ceilin 3 may likewise be lined with a covering 0 enamelled iron.

This arran ement ensures the advantage that the heat 18 distributed upon the bottom plate as well as upon the ceiling or roof in such a manner that it'canbe rendered perfectly uniform by a suitable arrangement of the channels In order to complete this ssibility of regulation, the elements 4, 4 4", can be constructed of several independent sections adjustable in the channels.

In some constructions of oven it may be necessaryalso to heat the bottom plate. In such case, there may be disposed underneath the said bottom plate 5,as an addition to the intermediate space 6, a chamber similar to the lower chamber 7 which may contain the heating elements 8, 8 8, housed in the channels 9, 9. 9 in the reverse position facing the reflecting bottom surface 10 which sends back the heat difiused towards the plate forming the ceiling or roof of the said auxiliary heating chamber. But since the plate itself, forms an equalizing dispersing mass, the channels may be disposed so that they face towards the said plate in such a manner as to render unnecessary the reflecting bottom 10.

This arrangement may also be utilized for constructing mixed ovens in which a part of the heating is'efl'ec'ted by thermo-electric accumulation, which permits the raising of the whole mass of the oven economically to a temperature which is in the neighborhood of the working tem erature.

In the annexed rawing there are shown the accumulator bodies 11, 11 11, in which are placed the resistances. 12, 12 and which are arranged in the space underneath the bottom plate 5 of the heating chamber 1 or above the roof or ceiling 3 of the heating chamber 1.

The arrangement of the channels characterized by the present invention has also the advantage that they constitute perfect protection for the thermo-electric elements which might be damaged by being knocked by the shovel during a stoking or clearing out. Further these channels assure perfect electric insulation of the heating elements.

The form, construction and arrangement of the channels in the furnace as above described, can be varied without departing from the spirit of the invention.

I claim:

1. An electric oven provided with an in-' ternal heating chamber having a heat-refleeting wall; a plurality of heat-reflecting channel members in said chamber disposed to face such wall; and thermo-electric heating elements arranged in said channels, whereby the radiant heat emitted by said heating elements at one side thereof is intercepted by the channels and reflected by the same exclusively against said wall to be reflected uniforml by the latter against the opposite wall of t e chamber.

2. An electric oven provided with an in ternal heating chamber having a heat-refleeting top wall; a plurality of heat-reflecting channel members. in said chamber disposed to face said top wall; and thermoelectric heating elements arranged in said channels, whereby the latter intercept the radiant heat emitted toward them by said heating elements and reflect it exclusively against the top wall to be reflected un1- formly by the latter against the bottom wall of the chamber. I

3. An electric oven provided with an mternal heating chamber havin a heat-reflecting top wall; a plurality 0 metal'channel members in said chamber disposed to face such wall and having their surfaces coated with enamel; and thermo-electric heating elements arranged in said channels, whereby the latter intercept the radiant heat emitted toward them by said heating elements and reflect it exclusively a ainst the top wall to be reflected uniform by the latter against the bottom wall of the chamber.

4. An electric oven provided with separate upper and lower internal heating chambers the upper chamber having a heat-refleeting top wall, and the lower chamber having a heat-reflecting bottom wall; a

Inrality of heat-reflecting channel memEera chamber and will reflect such heat excluwall, to.

sively toward the heat-radiat' be reflected uniformly by .the atter wall against said opposite wall.

In testimon whereof I aflix m si atnre.

ECONDO SACEIDTE

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