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US 4,499,859 AGranted
Vapor generator
AssigneeHitachi, Ltd.
InventorsAkira Nishiguchi, Sanpei Usui, Tomihisa Oouchi, Kazumi Iwai
Life of this patent
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AssigneeHitachi, Ltd.
InventorsAkira Nishiguchi, Sanpei Usui, Tomihisa Oouchi, Kazumi Iwai
Estimating the term…
A vapor generator for use in, for example, an absorption type water cooler or heater. The vapor generator having a burner section and a boiler section, the boiler section being constituted by an outer casing, an inner casing disposed in the outer casing, and a multiplicity of solution tubes attached in rows to the inner surfaces of wall of the inner casing so as to extend substantially vertically. The interior of the tubes is in communication with a space accommodating a medium to be heated and defined between the inner casing and outer casing. A multiplicity of fins are attached to the inner surfaces of walls of the inner casing in the area around the flame formed by the burner section so as to increase the rate of heat transfer to the medium in the above-mentioned space from the gas in the combustion chamber. The axis of each of the solution tubes in a second row is offset from the line which extends in parallel with the flow of gas from the midst of the gap between two adjacent solution pipes in a first row located upstream from the second row as viewed in the direction of flow of gas, so that overheating of the central portion of each solution tube in the second row is avoided advantageously.
A vapor generator having a burner section and a boiler section, said boiler section including an outer casing, an inner casing disposed in said outer casing, and a plurality of solution tubes attached in rows to inner surfaces of walls of said inner casing so as to extend substantially vertically, an interior of said tubes being in communication with a space accommodating a medium to be heated and defined between said inner casing and outer casing, a plurality of fins are attached to the inner surfaces of the walls of said inner casing in an area around a flame formed by said burner section, an axis of each of said solution tubes in a second row is offset from a line which extends in parallel with a flow of gas from a center of a gap between two adjacent solution pipes in a first row located upstream from said second row, as viewed in a direction of flow of the gas, a distance between the axis of each solution tube in said second row and the center of the gap between two adjacent solution tubes in said first row is greater than S/2 but not greater than (D-S)/2, where:
A vapor generator having a burner section and a boiler section, said boiler section including an outer casing, an inner casing disposed in said outer casing, and a plurality of solution tubes attached in rows to inner surfaces of walls of said inner casing so as to extend substantially vertically, an interior of said tubes being in communication with a space accommodating a medium to be heated and defined between said inner casing and outer casing, a plurality of fins are attached to the inner surfaces of the walls of said inner casing in an area around a flame formed by said burner section, an axis of each of said solution tubes in a second row is offset from a line which extends in parallel with a flow of gas from a center of a gap between two adjacent solution pipes in a first row located upstream from said second row, as viewed in a direction of flow of the gas, an outside diameter of said solution tubes in said first row is greater than an outside diameter of the solution tubes in said second row.
A vapor generator comprising:
Dependencies are inferred from the claim text.