DE635512C - Electric roasting and oven - Google Patents

Description

21 OCT. 1936

ISSUED ON
SEPTEMBER 18, 1936

The invention relates to an electrical. Roasting and oven.

I'm in. Roasting and baking ovens the boiler room to be able to heat up quickly and with the lowest possible heat losses an even temperature ! Warming of the entire room without having to One has to achieve local overheating zones which give rise to burning of food already proposed furnaces in which the Radiators "were arranged inside the boiler room: measures were taken here, to partially limit the heat radiation.

The well-known stoves had radiators in parallel longitudinal lines over the entire floor and ceiling area of the boiler room distributed and the individual strands towards the boiler room completely shielded. With such an arrangement, however, it was not possible to achieve a uniform Heat distribution is achieved because there are none at the front and rear of the boiler room Cross heaters were arranged, and the overall efficiency was through the complete Shielding of the heating lines severely impaired.

In the formation of the boiler room according to the invention. now a steady one ■ Distribution of heat throughout the room without

Risk of sticking food as a result of excessive heat reflection from the Side walls achieved in that the radiator in the form of a frame along the Eeken des Ileizraumcs and that the thermal radiation in the vertical direction along the side walls to 'the boiler room limited by shielding plates.

Best of all, the desired effect is relatively small using a heating rod Cross-section achieved, which are at the same time specifically so highly stressed that they the heat is given off essentially by radiation, whereby the side walls are expedient of the boiler room are designed so that they act as reflectors. In contrast to known designs with heating rods housed on or in the side walls This also results in a regular heat distribution in the horizontal planes of the Boiler room, with the shielding strips providing a concentration of heat along the side walls impede.

Embodiments of the subject matter of the invention are shown in the drawing, namely shows:

Fig. Ι a first embodiment with a, Boiler room of rectangular cross-section in section and

2 shows a second embodiment with a heating space of round cross-section in section;

Fig. 3 shows the arrangement of the radiators in an oven seen from the door,

Fig. 4 is a longitudinal section of this arrangement and

Fig. 5 is a plan view of the lower heater body;

6 and 7 show individual parts in section and

Fig. 5 is a view of an upper heating element with a built-in grate heating element.

Fig. Ι shows a roasting and baking oven B of rectangular cross-section. Above and below, ring-frame, electric heating elements H _x and H ₂ of oval cross-section are inserted, which are unshielded in the corners of the room, the upper, lower and side walls of which are reflective. On the side walls below or above the radiators H ₁ ίο and H ₂ Äuflägeleistenß (for placing metal sheets or grids) are arranged, which prevent thermal radiation in the vertical direction with a concentration of heat along the side walls. As can be seen from Fig. Ι, a regular distribution of heat occurs in the horizontal surfaces lying approximately above the floor surface, so that the food brought in is essentially heated by reflected radiation heat by directly heating the air space through? .O the radiators, which without Further options are possible, since an empty space of sufficient height above the floor surface must be available for the heat rays to propagate, even if the warm room is filled.

Fig. 2 shows a similar oven, but of a circular cross-section, in which an upper and a lower ring frame-shaped electrical heating element H ₁ and H _{2 is also} inserted in the baking chamber, namely here the frame heating elements are inserted so that their longitudinal strands at the corners of one the space cross-section inscribed rectangle lie in such a way that there is a regular heat distribution in the central horizontal planes. Here, too, the radiators are covered in the longitudinal direction by support strips α , so that no direct vertical heat radiation can occur. The effect is essentially the same as in the case of the crstbcschriebcneri exemplary embodiment

As the execution of an electric roasting and baking oven B according to Fig. 3 to S shows, the consisting of a seamless heating tube of oval cross-section lower heater H _{1 is laid} with its front strand in a depression directly behind the door T so that it is with the Bodenflächc is flush cleaning "-lind not hindered. By '' jdjese arrangement, the always occurring in the door larger Wärmeverlustc be compensated. the upper heating element H ₂ is also formed ring like a frame. Both radiators have- at the rear of the contact pins K for connection to easy to replace if damaged.

Here there is still the possibility of installing a gridiron in the upper radiator H ₂ , as shown in FIG. 8, since the entire ceiling surface within the ring frame is available for this purpose without the normal oven heating being impaired in its effect.

The frame-shaped radiators can both electrically and by steam, superheated steam or other conducted Gases or heated by hot oil.

In order to regulate the heating effect ·, one can instead of a single heating tube //, as shown in Fig. 6, two parallel heating tubes ₁ and A "Iu, as shown in Fig. 7, providing that, individually or together in operation Two parallel electrical heating resistors could also be provided in a single tube.

Claims (1)

Claim: Electric roasting and baking oven with arranged inside the boiler room Radiators, characterized in that the radiators are in the form of a frame are guided along the corners of the Heizraiimcs and that the heat radiation S5 in a vertical direction along the walls of the rope towards the Hciznuim is limited by shielding plate. For this purpose ι sheet of drawings iiKiii.tN. . (! κηιιιιι: κτ in dkm im: h: iisiiim'i: ki: iihi