Abstract: A temperature control system in a refrigeration appliance comprising: a cabinet defining at least one refrigerating compartment closed by a door; a compressor; and a control means provided with a timer and which is constructed to activate and deactivate the compressor when the interior of the refrigerating compartment reaches activation and deactivation temperatures, respectively. The control system comprises an ambient temperature sensor and an open door sensor which are operatively connected to the control means, the latter being designed to adjust the activation and deactivation temperatures of the compressor as a function of the ambient temperature external to the cabinet and the opening pattern of the door, in order to minimize the temperature variations of the food stored in the refrigerating compartment.

Abstract: A mounting arrangement for a refrigerator fan, comprising an electric motor (11) to whose shaft is affixed a propeller (12) with an axial flow passing through a refrigerated air outlet (4b) provided through an internal divisional wall (6) of the refrigerator; a support frame (20) having a marginal portion (21) and incorporating a central hub (22) in which is affixed the electric motor (11); a flexible support (30) in the form of an annular flange presenting an outer portion (31), which is peripherally and removably affixed to the contour of the refrigerated air outlet (4b), an inner portion (32) provided with a central opening (35) and with retaining means (36), which are removably locked to the marginal portion (21) of the support frame (20); and an annular membrane portion (33) interconnecting the outer portion (31) and the inner portion (32), in order to allow for small relative axial and radial displacements therebetween.

Abstract: An air duct arrangement for a refrigerator with forced air circulation of the type that comprises a refrigerating compartment (20) provided with a diffusing duct (23) receiving a refrigerated forced airflow from an air cooling compartment (40). The arrangement comprises at least one distributing duct (60) disposed in the upper portion of a space (V) defined below at least one of the shelves (22). The distributing duct (60) presents a rear end (61) opened to the inside of the diffusing duct (23) and a front end (62) opened to the front region of said space (V) adjacent to the front door (21) of the refrigerating compartment (20) and provided with a plurality of front openings (64, 65, 66) turned to the front region of said space.

Abstract: An air duct system for a combined refrigerator of the forced air circulation type and comprising a freezing compartment (1) and a refrigerating compartment (2), which are superposed and separated by an intermediate wall (3), and further having an air cooling compartment (4) lodging an evaporator (5) and a fan (6) and presenting at least one circulated air inlet (4a) and at least one refrigerated air outlet (4b). The system comprises a body (10) mounted to the inside of the intermediate wall (3) and defining a rear chamber (11), which is opened to the circulated air inlet (4a); a transversal through-duct (12) communicating the refrigerated air outlet (4b) with the refrigerating compartment (2); at least one first and one second return duct (13, 14) presenting a rear end (13b, 14b) opened to the rear chamber (11), and a front end (13a, 14a) opened to the inside of the freezing compartment (1) and of the refrigerating compartment (2), respectively.

Abstract: An evaporator for refrigeration systems, comprising a set of tubes (20) arranged in series, spaced and parallel in relation to each other, carrying a refrigerant fluid and which are incorporated to and trespass a plurality of fins (10) arranged in multiple rows extending transversally to the direction of a forced airflow (F). The fins (10), which are incorporated to the first and second tubes (20) are spaced from each other by a larger distance (d), when they are operatively associated with a refrigerating environment, and by a smaller distance (d), when they are operatively associated with a freezing environment. Said distances (d) decrease at each two subsequent tubes (20), until reaching at least the third tube (20), said distance being then maintained at a minimum value for the other subsequent tubes (20).