Arrangement for the forced air circulation in refrigerators and freezers
Inactive Publication Date: 2006-09-07
MULTIBRAS SA ELETRODOMESTICOS
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- Abstract
- Description
- Claims
- Application Information
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Benefits of technology
[0011] As a function of the above, it is an object of the present invention to provide an arrangement for the forced air circulation in refrigerators and freezers, which overcomes the known constructive solutions, promoting an efficient homogenous refrigeration of the interior of the compartment close to the front door thereof.
[0012] It is a further object of the present invention to provide an arrangement as mentioned above, which promotes an adequate refrigeration of the compartment region close to the respective front door, producing a reduction in the average temperature of said compartment.
[0013] It is another object of the present invention to provide an arrangement as mentioned above, which promotes an adequate refrigeration of the internal front region of the compartment at a relatively shorter time than that of the prior art solutions.
[0014] It is still a further object of the invention to provide an arrangement as mentioned above, which presents a simple construction, requiring no structural alterations in the cabinet design. SUMMARY OF THE INVENTION
Problems solved by technology
The refrigeration deficiency mentioned above results from several factors, such as: gain of additional heat in the front regions of the cabinet through the door sealing gaskets; difficulty in supplying cool air to the front part of the cabinet or directly to the internal panel of the door; poor distribution of the forced airflow; low speed of the forced airflow when reaching the regions close to the door.
Although in the constructive arrangements mentioned above the cool airflow is supplied to the compartment region adjacent to the door, and also to the region that is internal to the door shelves, it is still difficult to reach an efficient, intense and uniform cooling in said compartment region close to the door by means of a simple, durable and economically viable construction.
Furthermore, these prior solutions do not promote a complete homogenization of the temperature in the compartment when it is loaded with food, since the central region does not receive the same cool airflow that reaches the marginal regions and those regions confronting the air outlets of the ducts.
While eliminating the deficiencies of the solutions that use only cool airflow directional ducts, this solution of providing a fan in the door duct is somewhat limited in terms of refrigeration efficiency.
This suction from the central front region is insufficient to provide the displacement of the cooler air along the entire height of the compartment toward the front door.
Method used
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[0027] As illustrated in FIGS. 1 and 4, the arrangement for the forced air circulation of the present invention is directed to refrigeration appliances in the form of combined or not combined refrigerators and freezers, whose cabinet 10 forms at least one refrigeration compartment 20 or one freezer compartment 30, each being frontally closed by a respective door 21, 31.
[0028] The cabinet 10 further defines an air-cooling chamber 11 lodging an evaporator 12 of a refrigeration system, whose compressor is mounted in the lower rear part of the cabinet 10. A refrigeration fan 14 is mounted inside the cabinet 10, in order to draw the refrigerated air from the air-cooling chamber 11 and to form a forced cooling airflow, which is supplied to the refrigeration compartment 20, to the freezer compartment 30, or optionally to both the refrigeration compartment 20 and the freezer compartment 30 in the case of the combined cabinets, as illustrated in FIGS. 1 and 4. The forced cooling airflow com...
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An arrangement for the forced air circulation in refrigerators and freezers, whose cabinet (10) defines at least one compartment (20, 30), a respective door (21, 31), and an air-cooling chamber (11) lodging an evaporator (12) and from which the compartment is supplied with a forced cooling air-flow. The arrangement comprises: at least one suction duct (40), incorporated to the door (21, 31) and which is provided with air inlets (41), opened to the interior of the respective compartment (20, 30), and with at least one air outlet (42) turned to the interior of the cabinet (10). A return fan (50) is mounted so as to draw the air from different levels of the front part of the compartment, and to form inside the suction duct (40) a return airflow that is directed to the air outlet (42) of the suction duct (40).
Description
FIELD OF THE INVENTION [0001] The present invention refers to a constructive arrangement to provide an additional forced air circulation in the interior of the cabinet of refrigerators and freezers, particularly to increase air circulation in the internal regions of the cabinet that are located close to the front door of each compartment of said cabinet. The invention is intended to be applied to refrigerators and freezers with a simple cabinet, presenting a single compartment with a respective front door, or two superposed compartments, each being frontally closed by a door. PRIOR ART [0002] It is known from the state of art that, in the cabinets of refrigerators and freezers, the highest temperatures are found in the regions close to the door, which in the refrigerators usually incorporates different shelves on which the products to be refrigerated are subject to said temperatures that are higher than those in the remaining parts of the refrigeration compartment of the cabinet. [0...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F25D17/06F25D17/04F25D11/02
CPCF25D17/065F25D2317/062F25D2317/0653F25D2317/067F25D2317/0672F25D2317/0681F25D2317/0682F25D2400/04
InventorDUARTE, PUBLIO OTAVIO OLIVEIRAMARQUES, MARCO EDUARDOMONTICELLI, ENRICA
OwnerMULTIBRAS SA ELETRODOMESTICOS