Ice making device

Abstract

There is provided an ice making device in which any fluctuation in the amount of ice to be scraped off is nullified so that lump-shaped ice is prevented from being produced and damage to the scraper is prevented. In the ice making device configured in such a way that salt water that flows through a space between an inner pipe and a rotating cylinder is cooled by a cooling medium via the inner pipe so that ice is produced on the inner surface of the inner pipe, and the produced ice is scraped off by an edge portion of the scraper so that sherbet ice is produced, the scraper is provided with a scraper main body that is disposed on the outer surface of the rotating cylinder and pivotally supported by a center axle thereof, as a pivotal center, that is in parallel with the center axis of the rotating cylinder and a scraper weighted body that is formed of a material having a specific gravity larger than that of the scraper main body and mounted in the scraper main body in such a way as to be situated between the pivotal center of the scraper and the edge portion.

1 . An ice making device comprising:
 a double pipe that includes an outer pipe and an inner pipe contained in the outer pipe and in which a cooling medium flows through a space between the outer pipe and the inner pipe;   a rotating cylinder that is contained in the inner pipe in such a way as to be concentric with the inner pipe and driven by a driving device so as to be able to rotate on a center axis thereof in a predetermined direction; and   a scraper that is fixed to an outer surface of the rotating cylinder and has an edge portion that slidably makes contact with an inner surface of the inner pipe, the ice making device being configured in such a way that salt water that flows through a space between the inner pipe and the rotating cylinder is cooled by the cooling medium via the inner pipe so that ice is produced on the inner surface of the inner pipe, and the produced ice is scraped off from the inner surface by the edge portion of the scraper so that sherbet ice is produced,   wherein the scraper includes a scraper main body that is disposed on the outer surface of the rotating cylinder and pivotally supported by a center axle thereof, as a pivotal center, that is in parallel with the center axis of the rotating cylinder and a scraper weighted body that is formed of a material having a specific gravity larger than that of the scraper main body and mounted in the scraper main body in such a way as to be situated between the pivotal center of the scraper and the edge portion.   
     
     
         2 . The ice making device according to  claim 1 , wherein the scraper weighted body is mounted at a side end portion, of the scraper main body, that is distal from the pivotal center of the scraper main body. 
     
     
         3 . The ice making device according to  claim 1 , wherein the scraper weighted body is buried in the scraper main body. 
     
     
         4 . The ice making device according to  claim 1 , wherein the scraper includes an attachable and detachable scraper tip having the edge portion. 
     
     
         5 . The ice making device according to  claim 1 , wherein the scraper includes a scraper nail capable of making contact with the outer surface of the rotating cylinder.