Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1986-05-22
1988-01-05
Paschall, M. H.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219422, 219424, 219421, 99403, 126373, 2221465, F27D 1100
Patent
active
047178094
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a flat electric heating body and a deep fryer with tub, trough and sump as well as at least one heating body.
In the state of the art there is a deep fryer with an indirect heating system in which the walls of the oil container that are to be heated are corrugated, wherein, in the undulations protruding into the container, correspondingly formed heating bodies are non-interchangeably secured by brazing. The heating elements proper are likewise non-interchangeably locked into the heating bodies, so that upon damage to the heating element the entire oil receiving vessel must be replaced.
In addition, the wavy surface of the oil vessel is difficult to clean, a fact that is little appreciated by housewives and in restaurants.
SUMMARY OF THE INVENTION
The present invention has for its object the provision of a deep fryer that is not only easy to clean but in which upon the failure of a particular heating element that one is individually replaceable.
This object is attained by the provision of a flat electrical heating body that is distinguished by a shell of heat conducting material and at least one flat electric heating element that is replaceably insertable into the shell and fits into the shell with a sliding fit.
A deep fryer built up with heating bodies of this type is characterized in that at least one part of the bottom of the tub is electrically heated.
The advantages of a construction of this type are that the heating elements are individually replaceable, which was sought at the operating side from purely economic considerations. Further, the interior of the deep fryer can be easily cleaned because the walls that the oil contacts have plane surfaces.
BRIEF DESCRIPTION OF DRAWING
The invention is explained in relation to the drawings, which are purely schematic illustrations wherein:
FIG. 1 is a cross-section through a so-called duplex deep fryer with exclusively electric heating;
FIG. 2 is a side view of the deep fryer according to FIG. 1, with portions removed;
FIG. 3 is an enlarged fragmentary sectional view through the heating portion of the oil trough;
FIG. 4 is a perspective view of a section of a plane surface electric heating body;
FIG. 5 is an illustration analogous to FIG. 1 of a gas-electric operated deep fryer; and
FIG. 6 is an illustration analogous to FIG. 2 of the deep fryer according to FIG. 5.
DESCRIPTION OF PREFERRED EMBODIMENTS
FIG. 1 shows the construction of a deep fryer 1 with an oil receiving tub 3 under which there is a small oil trough 4 that terminates in a sump 5. The tub 3 serves to receive a basket 7 that contains the material to be fried. The side walls of the small oil trough 4 are for the most part covered with electric heating elements 8. Further electric heating elements 11 of this type are in the wall zone that establishes two shoulders 10. Towards the outside the heating elements 8 and 11 are insulated by means of an insulation 13.
If the deep fryer 1 is warmed up, a block of fat 14 often rests on the shoulders 10. The block 14 received in the tub 3 is melted outwardly from its supporting surfaces by the electric heating elements 11. The melted fat initially drips off into the sump 5 and then little by little fills the small oil trough 4 until, as indicated at the right side of the figure, it also reaches the level in the tub 3 that is needed for deep frying. The heating elements 8 and 11, which are suitably switched on as a group, serve for the maintenance of the needed temperature of the melted fat without overheating it in doing so.
Serving as heating elements are the heating elements according to FIG. 4, there shown in isometric, having a carrier plate 20 which in general, and advantageously, is the wall of the particular container that is to be heated. Here it is the wall of the small oil trough 4. A carrier plate likewise forms the wall of the shoulders 10 in the upper part of the deep fryer. On this carrier plate 20 is a long-surfaced plate with the function of establishing a housing attach
REFERENCES:
patent: 2360727 (1944-10-01), Shaw
patent: 2756321 (1956-07-01), Pappas
patent: 4251713 (1981-02-01), Landfors
patent: 4574183 (1986-03-01), Knauss
patent: 4574688 (1986-03-01), Barbieri
Kees Nicholas A.
Nilles James E.
Niro Plan AG
Paschall M. H.
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