Automatic ice maker of the open-cell type

An automatic ice maker of the open-cell type including a box-type housing, a plurality of spaced ice making cell casings arranged on a horizontal plane in an upper portion of the housing and opened downward, a cooling pipe mounted on the cell casings to be supplied with refrigerant from a freezing circuit, and a sprinkler mounted within a bottom portion of the housing and placed under the cell casings to spout ice making water into the respective cell casings,

• wherein a base plate is mounted within the upper portion of the housing to form an ice making chamber, and wherein the cooling pipe is mounted on the base plate at positions located above the cell casings and welded to an upper surface of the base plate,
• wherein the base plate is formed with a plurality of mounting holes located at positions corresponding with the ice making cell casings, wherein the ice making cell casings each are in the form of cup-shaped casing formed at its bottom with an annular flange which is coupled with the respective mounting holes of the base plate and welded to the base plate in a condition where the bottom of the cup-shaped casing coincides with the upper surface of the base plate, and wherein the cooling pipe is welded to the upper surface of the base plate in its entire length.