Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1984-10-30
1987-01-13
Goldberg, E. A.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
220368, 220 82R, 219438, F27D 1100, A47J 2700
Patent
active
046366180
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an electric fryer, and especially the particular development of the filtering lid and of the viewing window equipped with a cleaning system ensuring optimum viewing of the contents situated within the cooking chamber.
Most of the many fryers at present on the market have a filtering lid whereby some of the odours can be removed by passing them through a filtering cartridge made of activated carbon.
However, all these filtering lids have the following disadvantages: because of the temperature of the oil, the cooking of foodstuffs and especially foodstuffs containing a very high proportion of water causes this water to be transformed into vapours which are carried along at the same time as the oil vapours and pass through the filtering cartridge and saturate it very quickly, resulting in frequent replacement of this expensive element; it is also found that in existing models these vapours condense on the internal surface of the lid situated directly above the oil pool. This phenomenon, caused by the temperature difference between the external wall and the internal wall of the lid, results in condensates being present on the surface described above. Consequently, in view of the very small surface of this internal wall and the considerable quantity of water vapours, very rapid saturation of this surface is found to occur, and this, due to the saturation, results in some of the condensates returning into the pool of oil.
These two phenomena have the following disadvantages:
Condensates which remain present on the internal surface of the lid at the end of a cooking operation and which have not been taken into the oil pool during cooking fall back into the oil pool when the lid is opened and is put into a vertical position relatively to the horizontal plane of the fryer.
Moreover these condensates have an unpleasant taste, which is passed on to the oil pool and has a very disadvantageous effect on the natural taste of foodstuffs prepared normally in a fryer used without a filtering lid.
This phenomenon of condensation on the internal surface also has the following disadvantage: it causes a more or less high saturation of the water vapour contained in the chamber situated between the lid and the cooking oil pool.
This water vapour saturation also results in changing the taste of the food where the fryer concerned has a basket lifting system operatable from the exterior without the filtering lid having to be opened.
Accordingly, the food situated in that zone reabsorbs the water vapour and in so doing takes on the unpleasant taste of the water vapour although to a lesser degree.
The present invention provides a fryer which does not have the aforesaid disadvantages due to the fact that the lid comprises, taken in the upward direction from below, a shield or reflector, a lower condensation wall, an upper condensation wall, a condensation chamber between the lower and upper condensation walls, a communication means between the cooking chamber and the condensation chamber, filter means carried by the upper condensation wall, a communication means between the condensation chamber and the exterior through these filter means, also a means for discharging water of condensation towards the exterior.
Some fryers which are at present commercially available are provided with a translucent window which is fixed on the wall of the lid and is intended to allow the user to view the food inside the cooking chamber without opening the lid.
None of the systems developed up to the present day are of optimum effectiveness, inasmuch as condensation of water vapour and oil vapour inevitably occurs on the internal wall of the window.
Nor have any of the various systems developed for obviating this disadvantage been really effective.
To obviate the disadvantages of known viewing window systems, the lid of the fryer according to the invention is provided with a window mounted rotatably in the lid and provided with a scraper. The window especially comprises an upper shell and a lower shell which are arranged
REFERENCES:
patent: 1452018 (1923-04-01), Allen
patent: 4148250 (1979-04-01), Miki
patent: 4487117 (1984-12-01), Colley
Goldberg E. A.
Schneider Walter H.
Walberg Teresa J.
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