HOT WATER STORAGE-TYPE HOT WATER SUPPLY DEVICE

To provide a hot water storage-type hot water supply device having an exterior case in which end portions of outer plate members are connected through an engagement structure.SOLUTION: In a hot water storage-type hot water supply device which includes a hot water storage tank, an auxiliary heat source machine, and an exterior case composed of a plurality of frame members (5) and a plurality of outer plate members, and in which at least one face among a plurality of faces of the exterior case has a plurality of outer plate members (9, 10), and a connection portion of the outer plate members (9, 10) is provided with lap portions (12, 13) where one end parts of the plurality of outer plate members (9) are overlapped, the lap portion (12) of the outer plate member (9) at one side has a stepped-press portion (14) stepped-pressed to an inner part of the exterior case, and a first U-shaped portion (15) formed into an U-shape at an end portion of the stepped-press portion (14), and the lap portion (13) of the outer plate member (10) at the other side has a folded portion (16) folded to an inner side of the exterior case, and a second U-shaped portion (17) formed into an U-shape at an end portion of the folded portion (16), and the first U-shaped portion (15) is engaged with the second U-shaped portion (17).SELECTED DRAWING: Figure 5 【課題】外板部材の端部同士を係合構造を介して接続するようにした外装ケースを有する貯湯給湯装置を提供する。【解決手段】貯湯槽と、補助熱源機と、複数のフレーム部材(5)と複数の外板部材とからなる外装ケースとを備え、外装ケースの複数の面のうち少なくとも１面は複数の外板部材(9,10)を有し、これら外板部材(9,10)の接続部には複数の外板部材の一端部分同士が重なるラップ部(12,13)が設けられている貯湯給湯装置において、一方の外板部材(9)のラップ部(12)は、外装ケース内方へ段押しされた段押部(14)と、この段押部(14)の端部がコ字状に形成された第１コ字状部(15)を有し、他方の外板部材(10)のラップ部(13)は、外装ケース内方へ折り返された折返部(16)と、折返部(16)の端部がコ字状に形成された第２コ字状部(17)を有し、第１コ字状部(15)が第２コ字状部(17)に係合されている。【選択図】図５