Distribution system for clean rooms

Claim 2

A distribution system for a clean space within a building and comprising: a. a plenum having a perforated plenum inner wall communicating with said clean space, the plenum outer wall being defined by a wall of the building; b. distribution duct means substantially entirely within said plenum in spaced relation therein and comprising at least one distribution duct substantially coextensive in its length with one dimension of said plenum and having one open end for receiving air endwise, said duct having its axis substantially parallel to said plenum inner wall and having air ouTlet openings of between 0.040 inch and 0.250 inch diameter in the outer periphery thereof, for passing air into said plenum substantially normal to said axis and at a plurality of angles with respect to each other substantially completely along said one plenum dimension, the ratio of the free outer periphery area to the free plenum inner wall area being between 0.50 and 1.00; c. air supply means for supplying air into said distribution duct means; and, d. inlet means connecting said distribution duct means and said air supply means for introducing air at said open end of each of said at least one distribution duct, the air diffusing throughout said duct under pressure provided by said air supply means.

Claim 3

The system as disclosed in claim 1 wherein said distribution duct comprises a single cylinder having two rows of spaced apart openings, said rows being displaced at an angle within the range of 90* to 270*.

Claim 4

The system as disclosed in claim 1 wherein said distribution duct comprises a single cylinder having openings at angles within 45* to 165* and 195* to 315*.

Claim 5

A distribution system for a clean space within a building and comprising: a. a plenum having a perforated plenum inner wall communicating with said clean space, the plenum outer wall being defined by a wall of the building; b. distribution duct means substantially entirely within said plenum in spaced relation therein and comprising at least one distribution duct substantially coextensive in its length with one dimension of said plenum and having one open end for receiving air endwise, said duct having its axis substantially parallel to said plenum inner wall and having air outlet openings of between 0.040 inch and 0.250 inch diameter in the outer periphery thereof, for passing air into said plenum substantially normal to said axis and at a plurality of angles with respect to each other substantially completely along said one plenum dimension, said distribution duct comprising a single cylinder having openings around the entire periphery thereof and located in the upper plenum region spaced at least five inches from said plenum inner wall; c. air supply means for supplying air into said distribution duct means; and, d. inlet means connecting said distribution duct means and said air supply means for introducing air at said open end of each of said at least one distribution duct, the air diffusing throughout said duct under pressure provided by said air supply means.

Claim 6

A distribution system for a clean space within a building and comprising: a. a plenum having a perforated plenum inner wall communicating with said clean space, the plenum outer wall being defined by a wall of the building; b. distribution duct means substantially entirely within said plenum in spaced relation therein and comprising at least one distribution duct substantially coextensive in its length with one dimension of said plenum and having one open end for receiving air endwise, said duct having its axis substantially parallel to said plenum inner wall and having air outlet openings of between 0.040 inch and 0.250 inch diameter in the outer periphery thereof, for passing air into said plenum substantially normal to said axis and at a plurality of angles with respect to each other substantially completely along said one plenum dimension, said distribution duct comprising a single cylinder having openings around the entire periphery thereof and located in the upper plenum region spaced at least five inches from said plenum inner wall; c. air supply means for supplying air into said distribution duct means; and, d. inlet means connecting said distribution duct means and said air supply means for introducing air at said open end of each of said at least one distribution duct, the air diffusing throughout said duct under pressure provided by said air supply means.

Claim 7

The system as disclosed in claim 4 wherein said distribution duct comprises a second cylinder of smaller diameter than said single cylinder and having two rows of spaced apart openings, said second cylinder attached tangentially to and entirely within said single cylinder.

Claim 8

The system as disclosed in claim 4 wherein said distribution duct comprises a second cylinder of smaller diameter than said single cylinder and having openings at angles within 45* to 165* and 195* to 315*, said second cylinder being attached tangentially to and within said single cylinder.

Claim 9

The system as disclosed in claim 4, said plenum having a volume of between 1.5 and 3.0 Cu. Ft./Sq. Ft. of said inner wall.

Claim 10

The system as disclosed in claim 4 wherein the ratio of free area of said outer periphery to the free area of said perforated plenum floor is between 0.50 and 1.00.

Claim 11

A distribution system for space in a building providing a uniform air pressure across a surface area, comprising: a. a plenum having a perforated inner plenum wall defining said surface area, the plenum outer wall being defined by a wall of the building; b. at least one distribution duct having one open end for receiving air, positioned in spaced relation entirely within and substantially coextensive in one direction with said plenum, and having an axis substantiAlly parallel to said inner plenum wall, said duct having openings of between 0.040 inch and 0.250 inch diameter in its periphery; and, c. the ratio of free area of said periphery to the free area of said perforated plenum wall being between 0.50 and 1.0.

Claim 12

A distribution system for space in a building providing a uniform air pressure across a surface area, comprising: a. a plenum having a perforated inner plenum wall defining said surface area, the plenum outer wall being defined by a wall of the building; b. at least one distribution duct having one open end for receiving air, positioned in spaced relation entirely within and substantially coextensive in one direction with said plenum, and having an axis substantiAlly parallel to said inner plenum wall, said duct having openings of between 0.040 inch and 0.250 inch diameter in its periphery; and, c. the ratio of free area of said periphery to the free area of said perforated plenum wall being between 0.50 and 1.0.

Claim 13

The distribution system as disclosed in claim 9 wherein said duct comprises an inner cylindrical perforated duct attached within and tangentially to an outer cylindrical perforated duct.

Claim 14

The system as disclosed in claim 8 wherein said distribution duct comprises a second cylinder of smaller diameter than said single cylinder and having openings around the entire periphery thereof, said second cylinder being attached tangentially to and within said single cylinder.

Claim 15

The system as disclosed in claim 8 wherein said distribution duct comprises a single cylinder composed of flexible material, having openings around the entire periphery, and having a diameter of between 12 inches and 18 inches, spaced at least 5 inches from the inner plenum wall and in a plenum of between 21 inches and 30 inches in depth.

Claim 16

The distribution system as disclosed in claim 8 wherein said distribution duct comprises a cylindrical duct about 16 inches in diameter and having openings around the entire periphery thereof such that about 2.5 percent of said periphery is free area, said plenum having a depth of about 24 inches and said perforated plenum wall having about 2.5 percent free area.

Claim 17

A distribution system for a clean space within a building and comprising: a. a plenum having a perforated plenum inner wall communicating with said clean space, the plenum outer wall being defined by a wall of the building; b. distribution duct means substantially entirely within said plenum in spaced relation therein and comprising at least one distribution duct substantially coextensive in its length with one dimension of said plenum and having one open end for receiving air endwise, said duct having its axis substantially parallel to said plenum inner wall and having air outlet openings of between 0.040 inch and 0.250 inch diameter in the outer periphery thereof, for passing air into said plenum substantially normal to said axis and at a plurality of angles with respect to each other substantially completely along said one plenum dimension, said distribution duct comprising a single cylinder composed of flexible material, having openings around the entire periphery, and having a diameter of between 12 inches and 18 inches, spaced at least 5 inches from the inner plenum wall and in a plenum of between 21 inches and 30 inches depth; c. air supply means for supplying air into said distribution duct means; and, d. inlet means connecting said distribution duct means and said air supply means for introducing air at said open end of each of said at least one distribution duct, the air diffusing throughout said duct under pressure provided by said air supply means.

Claim 18

A distribution system for a clean space within a building and comprising: a. a plenum having a perforated plenum inner wall communicating with said clean space, the plenum outer wall being defined by a wall of the building; b. distribution duct means substantially entirely within said plenum in spaced relation therein and comprising at least one distribution duct substantially coextensive in its length with one dimension of said plenum and having one open end for receiving air endwise, said duct having its axis substantially parallel to said plenum inner wall and having air outlet openings of between 0.040 inch and 0.250 inch diameter in the outer periphery thereof, for passing air into said plenum substantially normal to said axis and at a plurality of angles with respect to each other substantially completely along said one plenum dimension, said distribution duct comprising a single cylinder composed of flexible material, having openings around the entire periphery, and having a diameter of between 12 inches and 18 inches, spaced at least 5 inches from the inner plenum wall and in a plenum of between 21 inches and 30 inches depth; c. air supply means for supplying air into said distribution duct means; and, d. inlet means connecting said distribution duct means and said air supply means for introducing air at said open end of each of said at least one distribution duct, the air diffusing throughout said duct under pressure provided by said air supply means.