Stream down type ice making machine

Abstract

A stream down type ice making machine having an ice making plate in which an ice making region is defined between a pair of vertical ribs, the pair of vertical ribs being spaced apart in the width direction and projecting from an ice making face and an evaporator disposed meanderingly in the back face opposite to the ice making face of the ice making plate, the ice making region of the ice making plate is cooled by cyclically supplying the evaporator with a refrigerant as well as ice-making water is supplied to flow down thereon so that many a lump of ice is produced on the ice making region, wherein protrusions projecting to the ice making region side and having a slope formed on the upper face thereof, the slope being inclined from above to down as being away from the ice making face, are provided in the vertical rib.

1 . A stream down type ice making machine comprising: 
 an ice making plate in which an ice making region is defined between a pair of vertical ribs, the pair of vertical ribs being spaced apart in the width direction and projecting from an ice making face; and    an evaporator disposed meanderingly in the back face opposite to the ice making face of the ice making plate, the ice making region of the ice making plate is cooled by cyclically supplying the evaporator with a refrigerant as well as ice-making water is supplied to flow down thereon so that many a lump of ice is produced on said ice making region,    wherein protrusions projecting to the ice making region side and having a slope formed on the upper face thereof, the slope being inclined from above to down as being away from the ice making face, are provided in the vertical rib.    
   
   
       2 . The stream down type ice making machine according to  claim 1 , wherein the protrusions are positioned between straight portions extending to the lateral direction in the evaporator and being spaced apart vertically.  
   
   
       3 . The stream down type ice making machine according to  claim 1 , wherein the protrusions correspond to a disposed position of the evaporator.  
   
   
       4 . The stream down type ice making machine according to  claim 1 , wherein the protrusions are provided opposite to the vertical ribs at both sides, the vertical ribs at both sides sandwiching the ice making region therebetween.