Boiling refrigerant-type cooling system

Claim 1

A boiling refrigerant-type cooling system for cooling an electric apparatus, said system comprising: a first substantially flat side board having a lower portion with a sealable opening therein; a plurality of substantially identical and substantially flat partition boards each having an outer periphery aligned with the periphery of said first side board plate, each of said partition boards having a lower portion with a first hole therein and an upper portion with a second hole therein and spaced from said first hole, each of said partition boards comprised of an aluminum core precoated with solder, a first one of said partition boards abutting the first surface of said first side board, said first hole of said partition board aligned with the sealable opening of said first side board; a first frame member comprised of an elongated rim-like material having a U-shaped cross section and comprised of an aluminum core precoated with solder, said rim-like material of said first frame being bent in an endless annular loop substantially aligned with the periphery of said partition boards, said first frame member abutting a surface of said first partition board opposite the surface of said first partition board abutting said first side board; a second partition board abutting a side of said first frame member opposite said first partition board; a second member and a third frame member, said second and third frame members being comprised of said elongated rim-like material, said rim-like material of said second frame member being bent in an endless annular loop dimensioned to circumscribe the first hole of said partition boards, said rim-like material of said third frame member being dimensioned to circumscribe the second hole of said partition boards, said second frame member being aligned with said first hole of said partition boards and abutting a surface of said second partition board opposite said first frame member, said third frame member aligned with said second hole of said partition boards and abutting the surface of said second partition board opposite said first frame member; a third partition board abutting a side of said second and third frame members opposite said second partition board; a second substantially flat side board having a first surface and a lower portion with a sealable opening therein aligned with the first hole of said partition boards, said second side board plate facing a surface of said third partition board opposite said second and third frame members; and said side board plates, said partition boards and said first, second and third frame members being joined by brazing to form an airtight refrigerant containing chamber aligned with said first holes of said partition boards in which the electrical apparatus is disposed and electrically connected through said openings in said first and second side boards, an airtight refrigerant condensing chamber in flow communication with the refrigerant containing chamber, an airtight vapor reservoir in flow communication with said airtight condensing chamber and aligned with said second holes of said partition boards, and a cooling chamber open to atmosphere and adjoining said refrigerant condensing chamber.