MANUFACTURING METHOD FOR STACK FOR THERMOACOUSTIC DEVICE, MANUFACTURING APPARATUS FOR STACK FOR THERMOACOUSTIC DEVICE AND THERMOACOUSTIC DEVICE

摘要

To provide a manufacturing method for a stack for a thermoacoustic device that can improve energy exchange efficiency and also suppress an increase in manufacturing cost, a manufacturing apparatus for the stack for the thermoacoustic device, and the thermoacoustic device.SOLUTION: A manufacturing method includes: a welding process of forming a structure A having adjacent thin pipes 21 welded together by heating a plurality of thin pipes 21 and a storage pipe 22 after bundling the plurality of thin pipes 21 with axes aligned and housing the plurality of bundled thin pipes 21 in a storage pipe 22 whose inner shape is substantially the same with an outer diameter (outer shape) of the plurality of thin pipes 21; a pressurizing process of pressurizing respective inner spaces of the thin pipes 21 of the structure A under atmospheric pressure higher than outside pressure; and a drawing process of heating one axial end of the structure A and axially drawing the one axial end of the structure A.SELECTED DRAWING: Figure 4