Unitized cabinet design

A frameless enclosure for air handling equipment comprising:

• a. a plurality of enclosure panels each reinforced by a double-flange integrally formed along the perimeter thereof, said double-flange having a generally L-shaped cross-section with one leg of the flange extending substantially perpendicular to the face of said panel, and with the other leg extending from the one leg substantially parallel to the face of said panel and inward from the perimeter of said panel, said panels being interconnected to form a box-like structure that includes at least one air duct opening;
• b. an integral lip formed into one of said enclosure panels to define an access opening therethrough;
• c. a generally horizontal top cover having a downwardly extending flange disposed along its perimeter;
• d. a lining of insulation underneath said top cover to provide a compression seal where said top cover overlies a top edge of at least one of said enclosure panels;
• and
• e. an access panel covering said access opening and held in place upon engagement with said downwardly extending flange of the top cover and at least one double-flange of said enclosure panels.

A frameless enclosure for air handling equipment, comprising:

• a. a quadrilateral bottom panel having a double-flange integrally formed along its perimeter, wherein said double-flange includes a first and a second flange with said first flange being disposed along the perimeter of said bottom panel and extending substantially vertically therefrom and with said second flange being disposed along the distal edge of said first flange and extending inwardly away from the perimeter of said bottom panel;
• b. a plurality of substantially vertical and rectangular side panels, each having a double-flange integrally formed along its perimeter such that for a portion of the perimeter of at least one of said side panels said double-flange is on only one side of said panel, and along another portion of the same perimeter said double flange is on only the other side of said panel, said double flange having a first and a second flange with said first flange disposed along the perimeter of each of said side panels and extending substantially perpendicular therefrom and with said second flange disposed along the distal edge of said first flange and extending inward away from the perimeter of each of said side panels, wherein the vertical edges of said side panels are fastened together and the bottom edge of each of said side panels are fastened to the perimeter of said bottom panel, whereby said plurality of side panels and said bottom panel are assembled into a box-like structure;
• and
• c. a generally horizontal top cover having a downwardly extending flange disposed along the perimeter thereof, wherein said top cover fits over the top of said box-like structure.

A frameless enclosure for air handling equipment, comprising:

• a. a quadrilateral bottom panel having a double-flange integrally formed along its perimeter, wherein said double-flange includes a first and a second flange with said first flange being disposed along the perimeter of said bottom panel and extending substantially vertically therefrom and with said second flange being disposed along the distal edge of said first flange and extending inwardly away from the perimeter of said bottom panel;
• b. a plurality of substantially vertical and rectangular side panels, each having a double-flange intergrally formed along its perimeter, wherein said double-flange includes a first and a second flange with said first flange disposed along the perimeter of each of said side panels and extending substantially perpendicular therefrom and with said second flange disposed along the distal edge of said first flange and extending inward away from the perimeter of each of said side panels, wherein the vertical edges of said side panels are fastened together and the bottom edge of each of said side panels are fastened to the perimeter of said bottom panel, whereby said plurality of side panels and said bottom panel are assembled into a box-shape structure;
• and
• c. a generally horizontal top cover having a downwardly extending flange disposed along the perimeter thereof, wherein said top cover fits over the top of said box-shape structure.
• d. an integral lip formed into one of said side panels to define an access opening therethrough;
• and
• e. an access panel covering said access opening and held in place by engagement with said downwardly extending flange on the top cover and at least one double-flange of said side panels.

A frameless enclosure comprising:

• a. at least two sheet metal panels each reinforced by a double-flange integrally formed along the perimeter of each of said panels, said double-flange having a generally L-shape cross-section with one leg of the flange extending generally perpendicular to the face of its panel and with the other leg extending from the one leg generally parallel to the face of its panel and inward from the perimeter of its panel, said panels being interconnected to form a box-like structure;
• b. a seamless lip integrally formed in at least one of said panels to define at least two generally rectangular air duct openings through said box-like structure;
• c. a fan disposed inside said enclosure for conveying air through said enclosure between said air duct openings;
• d. insulation lining the interior of said enclosure for providing sound absorption and heat insulation;
• and
• e. a generally horizontal top cover having a downwardly extending flange disposed along the perimeter thereof, said cover being adapted to fit over the top of said box-like structure.