AUTOMATIC ICE-MAKING MACHINE

PROBLEM TO BE SOLVED: To provide an ice-making machine, which is made reluctant to receive the influences of a local distortion due to a soldering by a torch and torch uneven heat by caulking means to crush and joint the caulked portion, and a mechanical stress, so that ice can drop smoothly from an ice making chamber at the time of an ice removing run.SOLUTION: In an ice-making part of an automatic ice-making machine, the ice-making part composed of a cooling plate 14 and an ice-making frame 13 is subjected to an electroless nickel-phosphorous plating coat, and the surface roughness Ra of the electroless nickel-phosphorous plating coat is made to have an arithmetic average roughness Ra (arithmetic mean roughness) at or less than 0.4 μm so that an ice making chamber has the cooling part 14 and the ice-making frame 13 hard-soldered in a heating furnace.SELECTED DRAWING: Figure 1 【課題】製氷枠と仕切体とを接合して製氷部を構成する際に、この接合手段としてトーチによるろう付けや、前記の各部材にカシメ部とカシメ穴を設けて該カシメ部を圧潰することで接合するカシメによるトーチ偏熱による局部的な歪みや、機械的な応力による歪みの影響を受けにくくし、除氷運転に際し氷が製氷室から円滑に落下出来る製氷装置を提供する。【解決手段】自動製氷機の製氷部において、冷却板１４と製氷枠１３とからなる前記製氷部に無電解ニッケル−リンめっき被膜を施すと共に、該無電解ニッケル−リンめっき被膜の表面粗さＲａ(算術平均粗さ)を０．４μｍ以下とし、冷却板１４と製氷枠１３が加熱炉内で硬ろう接合された製氷室を設ける。【選択図】図１