LID PLATE STRUCTURE FOR HEAT EXCHANGER

To provide a lid plate structure for a heat exchanger that can prevent a thermal insulation material from scattering due to deformation of a lagging plate and suppress temperature rise in a lid plate.SOLUTION: A lid plate structure for a heat exchanger includes: a lid body 331 for closing an opening 311 of a casing 310 incorporating a built-in heat exchange unit therein; a first thermal insulation material 332 provided on an inner surface side of the lid body 331; a first metal plate 333 for covering a surface of the first thermal insulation material 332; a second thermal insulation material 334 provided on a front surface side of the first metal plate 333; a second metal plate 335 for covering a surface of the second thermal insulation material 334; and a lagging plate 336 for covering a surface of the second metal plate 335.SELECTED DRAWING: Figure 1 【課題】ラギングプレートの変形に伴う保温材の飛散を防止し得、蓋板の温度上昇を抑制し得る熱交換器の蓋板構造を提供する。【解決手段】熱交換ユニットが内蔵されたケーシング３１０の開口３１１を閉じる蓋本体３３１と、蓋本体３３１の内面側に設けられる第一保温材３３２と、第一保温材３３２の表面を覆う第一金属板３３３と、第一金属板３３３の表面側に設けられる第二保温材３３４と、第二保温材３３４の表面を覆う第二金属板３３５と、第二金属板３３５の表面を覆うラギングプレート３３６とを備える。【選択図】図１