(57) The invention relates to a perfected refrigerator with two compartments, one for
frozen food and one for cold food, capable of withstanding working loads of considerable
intensity in the freezer compartment without however, harming the foods or drinks
in the cold food compartment.
This result is achieved by inserting into the cold food compartment one or more elements
which are capable of storing heat or cold in predetermined period of operation and
of yielding them up in other periods of operation.
In particular it deals with the provision of a heat storage element in the cold food
compartment of the refrigerator which may be constituted for example by a tank of
pure water (or of a solution with a freezing point slightly above 6° C, which is placed
in the coldest zone in this compartment (just below the evaporator).
Thus, during normal operation, the water in the tank remains in the liquid state while
under conditions of operation with the compressor continuously activated, as occurs
during rapid freezing, if the temperature within the cold food compartment tends to
fall below zero (such as would harm some foods contained therein) the mass of water
contained in the said tank introduces an obstacle to this lowering of the temperature.
Indeed before the temperature in the compartment can fall below zero, the refrigerator
must take all the latent heat of freezing from the water in the tank which is necessary
to transform it into ice and hence this mass of water, if of suitable size, prevents
the temperature in the compartment from falling below zero before the freezing operation
of the food just introduced is ended.
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