Cooling system for compartments maintaining the relative humidity of refrigerated products
AssigneeMabe Mexico S. de R.L. de C.V.
InventorsAlfredo Diaz Fernandez, Cesar Gutierrez Perez Reguera, Luis Humberto Uriostegui Vazquez, Gerardo Gonzalez Camacho, Bernardo Vazquez Mellado Esqueda, Jose Rafael Castro Gutierrez
Life of this patent
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Abstract
A cooling system for compartments that keep the relative humidity of products in refrigeration, characterized because it has a contact duct by means of a heat transfer plate, applied to the functioning of a two-door and two-compartment refrigerator with independent temperature regulation between the two compartments, refrigerator and freezer. The compartments are separated and the air is not mixed, thus the refrigerator compartment dehydrates less the food contained therein.
Claims22
A cooling system for a refrigerator having a refrigerator compartment with side walls, a ceiling and a floor, a freezer compartment with side walls, a ceiling and a floor, the compartments having independent temperature regulation devices and doors, the freezer compartment having a cooling system including a compressor, a capillary condenser, and an evaporator for cooling air in contact therewith, comprising:
- a high air mass flow ducting system comprising a duct on each compartment;
- said duct ride of a temperature conducting material having a metallic heat transfer plate area located between the refrigerator and the freezer compartment, the ducting system functionally operative in different locations between the refrigerator compartment and freezer compartment, allowing passage of air from the refrigerator compartment through the heat transfer plate, the air from the refrigerator compartment not mixing with air circulating through the freezer compartment but cooled by the same heat transfer plate which is also in contact with the air circulating through the freezer compartment and exiting the high air mass flow ducting system at the refrigerator compartment at a temperature of 0° C. or above, to maintain air humidity in the refrigerator compartment;
- said ducting system separating air passage between the refrigerator compartment and the freezer compartment;
- and
- a means for allowing the high air mass flow through the duct in the refrigerator compartment with a small temperature differential.
A method of refrigeration comprising the steps of:
- a) providing a refrigerator comprising:
- a refrigerator compartment with side walls, a ceiling and a floor, a freezer compartment with side walls, a ceiling and a floor, the compartments having independent temperature regulation devices and doors, the freezer compartment having a cooling system including a compressor, a capillary condenser, and an evaporator for cooling air in contact therewith;
- comprising:
- a high air mass flow ducting system comprising a duct on each compartment;
- said duct made of a temperature conducting material having a metallic heat transfer plate area located between the refrigerator and the freezer compartment, the ducting system functionally operative in different locations between the refrigerator compartment and freezer compartment, allowing passage of air from the refrigerator compartment through the heat transfer plate, the air from the refrigerator compartment not mixing with air circulating through the freezer compartment but cooled by the same heat transfer plate which is also in contact with the air circulating through the freezer compartment and exiting the high air mass flow ducting system at the refrigerator compartment at a temperature of 0° C. or above, to maintain air humidity in the refrigerator compartment;
- said ducting system separating air passage between the refrigerator compartment and the freezer compartment;
- and
- a means for allowing the high air mass flow through the duct in the refrigerator compartment with a small temperature differential;
- b) circulating the air through in succession, said compressor, said evaporator, said condenser and back to said compressor;
- c) producing an air flow from the refrigerator compartment through the duct;
- d) cooling by conduction with a heat transfer plate through the duct wall;
- e) regulating the temperature in the refrigerator compartment by means of a fan in the duct which switches when the temperature reaches above 3.5° C. and switches off when it reaches below 2.5° C.;
- and
- f) regulating the temperature in the freezer by means of a sensor at the evaporator entrance which turns on the compressor upon sensing a temperature of −15° C. and turns off compressor upon sensing a temperature below −25° C.;
- wherein the same sensor is used for end thawing upon reaching a temperature of 5° C.
Dependencies are inferred from the claim text.