PURPOSE: To use effectively dead space at a corner part of work top.

CONSTITUTION: A substantially L-shaped housing cabinet 5 is provided at a rear part of a corner sink 2, and a hot air apparatus 6 is provided at a rear corner of the housing cabinet 5. A first drying chamber 7 is formed in front of the hot air apparatus 6, and a first rack 8, which can be pulled out of an opening in the front surface, is provided inside the first drying chamber 7. A second drying chamber 9, which is formed separately from the first drying chamber 7, is provided on either side of the first drying chamber 7, and a second rack 10, which, like the first rack 8, can be pulled, is provided in the second drying chamber 9. Further, an exclusive hot air passage 14 is provided between the second drying chambers 9 and the hot air apparatus 6, so that operation can be selectively changed over by switch control between only the first drying chamber 7, only the second drying chambers 9 and both the first and second chambers 7 and 9.