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A refrigerator-freezer of the combined type comprises a first and a second refrigerating units and a single cooling circuit for both units, which are fluid-dynamically and reciprocally connected by an air passage conduit; the temperature inside the first unit is controlled by a device comprising mot

A refrigerator-freezer of the combined type comprises a first and a second refrigerating units and a single cooling circuit for both units, which are fluid-dynamically and reciprocally connected by an air passage conduit; the temperature inside the first unit is controlled by a device comprising motorised interception means of the passage conduit; electronic control means of the motorised interception means, directly carried aboard a supporting body adapted in use to be arranged along the passage conduit; an electronic temperature sensor operatively and directly connected to the electronic control means, carried aboard the supporting body; and ventilator means, carried aboard the supporting body, operated by the electronic control means of the motorised interception means for selectively ensuring circulation of air by forced convection between the first and second refrigerating units along the passage conduit.

대표청구항 ▼

1. A temperature control device of an appliance having a first refrigerating unit and a second refrigerating unit, wherein the first and the second refrigerating units are cooled by a single cooling circuit and are fluid-dynamically connected to each other by an air passage conduit; an evaporator di

1. A temperature control device of an appliance having a first refrigerating unit and a second refrigerating unit, wherein the first and the second refrigerating units are cooled by a single cooling circuit and are fluid-dynamically connected to each other by an air passage conduit; an evaporator disposed in the second refrigerating unit; the temperature control device comprising: a supporting body arranged along said air passage conduit;a motorized shutter assembly disposed on the supporting body, wherein the motorized shutter assembly comprises: at least one shutter element configured to restrict or allow airflow through said air passage conduit;an electric motor configured to operate the at least one shutter element;means for controlling said electric motor disposed on the supporting body; andan electronic temperature sensor electrically coupled to said means for controlling said electric motor and configured to measure a temperature associated with said first refrigerating unit; and a defrosting ventilator disposed upstream of the evaporator with respect to an air flow; and a first ventilatordisposed on the supporting body and electrically coupled to said means for controlling said electric motor and being configured to actuate the first ventilator only when the passage conduit is at least partially open, and wherein said means for controlling is configured to control said shutter element for allowing said passage conduit to remain at least partially open when said first ventilator is deactivated, thereby forcing a circulation of air between said first and second refrigerating units. 2. The temperature control device according to claim 1, wherein the electronic temperature sensor is carried directly aboard said supporting body, on a side facing towards said first refrigerating unit. 3. The temperature control device according to claim 1, wherein the first ventilator is carried by said supporting body on a side opposite to said electronic temperature sensor. 4. The temperature device according to claim 1, wherein the supporting body comprises: a first casing portion shaped so as to define a passage section of said air passage conduit between said first and second refrigerating units and coaxially housed inside the air passage conduit, said first casing portion of the supporting body directly supporting at least one shutter element of said motorized shutter assembly; andat least one second casing portion arranged laterally to said first casing portion and internally housing the electrical motor associated with the at least one shutter element and said electronic control unit. 5. The temperature control device according to claim 4, wherein the electric motor is a reversible polarity electrical motor operatively coupled to said at least one shutter element via a motor reducer unit. 6. The temperature control device according to claim 4, wherein the first ventilator is carried coaxially by said first casing portion. 7. A household appliance, comprising: a first refrigerating unit and a second refrigerating unit served by a single cooling circuit and fluid-dynamically connected to each other by an air passage conduit; an evaporator disposed in the second refrigerating unit; anda temperature control device configured to control the temperature inside the first and second refrigerating units, the temperature control device including at least a first temperature sensor positioned in the second refrigerating unit, the temperature control device comprising:a supporting body arranged along the air passage conduit;a motorized shuttering device disposed on the supporting body; wherein the motorized shuttering device comprises: at least one shutter element configured to restrict or allow airflow through said air passage conduit;an electric motor disposed on the supporting body; means for controlling said electric motor; anda second temperature sensor electrically coupled to said means for controlling said electric motor and configured to measure a representative temperature of the first refrigerating unit; and a defrosting ventilator disposed upstream of the evaporator with respect to an air flow; and a first ventilatordisposed on the supporting body and electrically coupled to said means for controlling said electric motor and being configured to actuate the first ventilator only when the passage conduit is at least partially open, and wherein said means for controlling is configured to control said shutter element for allowing said passage conduit to remain at least partially open when said first ventilator is deactivated, thereby forcing an air flow between said first and second refrigerating units. 8. A method of controlling a temperature inside a first refrigerating unit served by a cooling circuit that additionally serves a second refrigerating unit, the first and second refrigerating units being fluid-dynamically connected to each other by an air passage conduit provided with a motorized shuttering device, the method comprising: providing an evaporator disposed in the second refrigerating unit; measuring the temperature inside the first refrigerating unit via a first temperature sensor;if the measured temperature inside the first refrigerating unit is higher than a first predetermined threshold, operating the at least one motorized shuttering device so as to put into fluid-dynamic communication said first refrigerating unit with said second refrigerating unit via said passage conduit for permitting a passage of air between the two refrigerating units by convection; providing a defrosting ventilator disposed upstream of the evaporator with respect to an air flow; and actuatinga first ventilator only when the passage conduit is at least partially open, and allowing said passage conduit to remain at least partially open when said first ventilator is deactivated, thereby forcing an air flow between the first and second refrigerating units through the air passage conduit. 9. The method according to claim 8, further comprising: measuring a temperature inside said second refrigerating unit via a second temperature sensor; andactuating a compressor, disposed in the cooling circuit, if the temperature measured via the second temperature sensor is higher than a second predetermined threshold. 10. The temperature control device according to claim 1, wherein the electronic control unit is further configured to selectively deactivate the first ventilator, during the period when the passage conduit is at least partially open, based on a temperature variation measurable by the electronic temperature sensor. 11. The household appliance of claim 7, wherein the electronic control unit is further configured to selectively deactivate the first ventilator, during the period when the passage conduit is at least partially open, based on a temperature variation measurable by the second electronic temperature sensor. 12. The method according to claim 8, wherein the selective actuation of the first ventilator comprises selectively deactivating the first ventilator, during the period when the passage conduit is at least partially open, based on a temperature variation measurable by the first temperature sensor. 13. The method according to claim 9, further comprising: actuating a second ventilator, disposed in the cooling circuit, based on a temperature variation measurable by the first temperature sensor when the first ventilator is deactivated during the period when the passage conduit is at least partially open. 14. The temperature control device according to claim 1, wherein the cooling circuit includes: a compressor actuated if a measured temperature inside the second refrigerating unit is higher than a predetermined threshold; andsaid defrosting ventilator is activated based on a temperature variation measurable by the electronic temperature sensor when the first ventilator is deactivated during when period the passage conduit is at least partially open. 15. The household appliance according to claim 7, wherein the cooling circuit includes: a compressor actuated if a measured temperature inside the second refrigerating unit is higher than a predetermined threshold; andthe defrosting ventilator is activated based on a temperature variation measurable by the second temperature sensor when the first ventilator is deactivated during the period when the passage conduit is at least partially open.