Refrigerator

A refrigerator comprising an outer box, an inner box, foam insulating material filling a space defined between said outer and inner box, said material beig foam-formed in situ, and an air blower having a fan and a driving motor for circulation of cooled air in said refrigerator, characterized in that:

• in forming of the boxes of the refrigerator;
• a recessed portion recessed inwardly of the refrigerator is provided at the rear portion of the outer box of the refrigerator;
• a hole is provided in the outer box portion in which said recessed portion is formed;
• a hole is provided in the inner box portion being in opposite relation to said hole;
• in order to connect said two holes, a communicating pipe communicating between the exterior and interior of the refrigerator is provided between the outer box and the inner box at a portion of the outer box wherein said recessed portion is provided,
• the driving motor is provided in said recessed portion in such a manner that the driving shaft thereof extends through said communicating pipe;
• the fan is mounted at the forward end of said driving shaft on the side of the interior of the refrigerator;
• the communicating pipe having an outer collar, an inner collar and step portions provided between the outer box and the inner box, said inner collar being provided at the forward end thereof with shaft support portions and the like;
• a seal member made of a synthetic resin foam-forming product or the like is clamped around said communicating pipe and between the outer collar and the inner collar;
• thereafter a foam-forming insulating material is filled in the space defined between the outer and inner box.

A refrigerator comprising at least one refrigerating chamber means defined by an outer box and an inner box spaced therefrom, foam insulating material filling the space defined between said inner and outer box, an air blower having a fan mounted on a drive shaft of a driving motor for circulation of cooled air, and an evaporative cooler means, characterized in that:

• a housing means is arranged on a rear portion of the outer box for accommodating said driving motor;
• an opening means is provided in said outer box for communicating said housing means with an interior of said at least one refrigerating chamber means;
• means for mounting said driving motor at said housing means such that the drive shaft thereof extends through said opening means with the fan being arranged in proximity to the evaporative cooler means;
• a pipe means arranged in said opening means for receiving the drive shaft of the driving motor;
• a duct member integrally formed with said pipe means and interposed between said inner box and said outer box, said duct member being recessed in a direction toward said housing means at least within the area of said housing means so as to define an air flow passage between said duct member and a portion of said inner box;
• means for mounting said pipe means and said duct member at said outer box;
• a contracted hole means formed in said inner box at least within the area of the recessed portion of said duct member for forming a bell mouth for the fan mounted on the drive shaft;
• and means provided at said air flow passages for communicating said air flow passage with the at least one refrigerating chamber means, whereby air is drawn over the evaporative cooler means by said fan and directed through said air passage to said refirgerator chamber means.

A refrigerator comprising an inner box defining a compartment, an outer box arranged in spaced enclosing relationship with said inner box, a foam-forming insulating material filled in the space between said inner box and said outer box, and a blower means including a fan disposed in said compartment and a drive motor having a drive shaft to which said fan is secured, wherein the improvement comprises:

• a recess formed in said outer box for mounting said drive motor therein;
• and
• a communicating means disposed in said recess and connecting said inner box to said outer box for accommodating the drive shaft, said communicating means comprising:
• a tubular guide portion extending through the inner box into said compartment, said tubular guide portion being formed therein with a bore for permitting the drive shaft of the drive motor to extend therethrough,
• a stepped portion contiguous with said guide portion and interposed between said inner box and said outer box, said stepped portion being formed therein with a bore of a larger diameter for supporting a bracket of the electric motor through a rubber seat,
• and a projection formed on the inner surface of said tubular guide portion and extending inwardly to narrow said bore so as to prevent a wobbling of the drive shaft.

A refrigerator comprising at least one refrigerating chamber means defined by an outer box and an inner box spaced therefrom, foam insulating material filling the space between said outer and inner box, and an air blower including a fan and a driving motor for circulation of cooled air in the at least one refrigerating chamber means, characterized in that:

• a recess means is provided in a rear portion of said outer box for accomodating the driving motor;
• a pipe means is provided for communicating said recess means with the at least one refrigerating chamber means;
• a drive shaft means is provided on the driving motor and extends through said pipe means, the fan is mounted at the forward end of said drive shaft means on a side thereof facing the at least one refrigerating chamber means;
• means are provided in said pipe means for guiding the drive shaft means therein to ensure a steady, non-wobbling positioning thereof;
• and in that means are provided for positioning said pipe means at said recess means including a first collar means arranged at a first end of said pipe means on an outer periphery thereof for engagement with a portion of said outer box wherein said recess means is provided, and means provided at the other end of said pipe means on an outer periphery thereof for engaging a fastening means.