Compact heat exchanger for a compact cooling system

A compact cooling system, comprising:

• a radial fan having an axis, said radial fan directing air flow outwardly away from said fan axis;
• a first heat exchanger and a second heat exchanger, said heat exchangers being disposed around said radial fan with first and second headers extending generally in the same direction as said fan axis, said heat exchangers each having:
• an inlet in said first header,
• an outlet in one of said first and second headers,
• a plurality of flat tubes extending between said first and second headers, said plurality of tubes:
• being substantially parallel between first and second end tubes of said plurality of flat tubes,
• adapted to carry a fluid between said first and second headers, and
• spaced from a system front to a system back across said air flow, and
• said first header including a portion extending beyond one of said first and second end tubes whereby said inlet is in said extending portion of said first header;
• a second portion in said one of said first and second headers extending beyond one of said first and second end tubes in said one of said first and second headers of each of said first and second heat exchangers;
• a system inlet;
• a system outlet;
• a first rectangular tube connecting said system inlet to said inlet in said extending portion of said first heat exchanger, said first rectangular tube being proximate and in line with said one of said first and second end tubes of said first heat exchanger and generally disposed in a space along said fan axis bounded by the ends of said extending portion of said one of said first and second headers of said first heat exchanger;
• and
• a second rectangular tube connecting said system inlet to said inlet in said extending portion of said second heat exchanger, said second rectangular tube being proximate and in line with said one of said first and second end tubes of said second heat exchanger and generally disposed in a space along said fan axis bounded by the ends of said extending portion of said one of said first and second headers of said second heat exchanger;
• a third rectangular tube connecting said system outlet to said outlet in said second extending portion of said first heat exchanger, said third rectangular tube being proximate and in line with one of said first and second end tubes of said first heat exchanger and generally disposed in a space along said fan axis bounded by the ends of said second extending portion of said one of said first and second headers of said first heat exchanger;
• and
• a fourth rectangular tube connecting said system outlet to said outlet in said second extending portion of said second heat exchanger, said second rectangular tube being proximate and in line with said one of said first and second end tubes of said second heat exchanger and generally disposed in a space along said fan axis bounded by the ends of said second extending portion of said one of said first and second headers of said second heat exchanger,
• wherein
• said first and second rectangular tubes are proximate said first end tubes of said first and second heat exchangers and said third and fourth rectangular tubes are proximate said second end tubes of said first and second heat exchangers, and
• said system inlet is at said system front and said system outlet is at said system back.

A compact cooling system, comprising:

• a radial fan having an axis, said radial fan directing air flow outwardly away from said fan axis;
• four heat exchangers, three of said heat exchangers each comprising
• a plurality of generally flat members joined along longitudinal sides to define tube passages between joined flat members, adjacent flat members defining different tube passages being connected at their ends, said flat members including first and second end flat members between which the other of the plurality of generally flat members are disposed;
• first and second headers at opposite ends of said flat members enclosing said defined tube passages;
• an inlet in said first header;
• an outlet in one of said first and second headers;
• one of said first and second headers including a portion extending beyond the first end flat member whereby one of said inlet and outlet is in said extending portion of said one of said first and second headers;
• a first rectangular connector for connecting a first exterior line to said one of said inlet and outlet in said header extending portion, said first rectangular connector being proximate and in line with said first end flat member and having a major dimension and a minor dimension, wherein said major dimension generally coincides with the width of the flat members;
• said heat exchangers being arranged in a box-shaped envelope about said radial fan with said headers of said heat exchangers extending generally in the same direction as said fan axis with adjacent headers of said heat exchangers being disposed against one another whereby air flow between said adjacent headers is prevented.