Method for producing a freezing chamber and the freezing chamber obtained with this method

Abstract

A method for producing a freezing chamber, a so-called whipping and freezing chamber, in ice cream making machines, comprises a step of producing a helical path between an inner cylinder and an outer cylinder, a step of producing a first flange and a second flange for closing the opposite ends of the helical path; in the method said steps occurring simultaneously and being carried out by means of the same working step.

1 . A method for producing a freezing chamber, in ice cream making machines, comprising: 
 a step of producing a helical path between an inner cylinder and an outer cylinder,    a step of producing a first flange and a second flange for closing the opposite ends of the helical path,    wherein the step of producing the helical path and the step of producing at least a first end flange substantially coincide and are carried out by means of the same working step.    
   
   
       2 . The method according to  claim 1 , wherein the step of producing the helical path comprises the sub-steps of winding a plurality of metal coils around the inner cylinder to form a spiral, producing a first flange by drawing near two or more coils of a first end of the spiral, producing a second flange by drawing near one or more coils of a second end of the spiral.  
   
   
       3 . The method according to  claim 2 , wherein it comprises the step of using a ring-shaped weld to fix the end flanges to the surface of the inner cylinder.  
   
   
       4 . The method according to  claim 1 , wherein the step of producing the helical path and the step of producing at least one of the end flanges consist of a working operation on the inner cylinder.  
   
   
       5 . The method according to  claim 1 , wherein the step of producing the helical path and the step of producing at least one of the end flanges consist of a working operation on the outer cylinder.  
   
   
       6 . The method according to  claim 4 , wherein the working operation on the inner cylinder or on the outer cylinder consists of a turning operation.  
   
   
       7 . The method according to  claim 1 , wherein it comprises the step of producing a second end flange by means of an assembly operation.  
   
   
       8 . The method according to  claim 7 , wherein the second end flange is made of a plastic material and is assembled by mechanical clamping.  
   
   
       9 . A freezing chamber, in ice cream making machines, wherein it is obtained using the method in accordance with  claim 1 .  
   
   
       10 . An ice cream making machine, wherein it comprises a chamber in accordance with  claim 9 .  
   
   
       11 . The method according to  claim 5 , wherein the working operation on the inner cylinder or on the outer cylinder consists of a turning operation.  
   
   
       12 . The method according to  claim 11 , wherein it comprises the step of producing a second end flange by means of an assembly operation.  
   
   
       13 . The method according to  claim 12 , wherein the second end flange is made of a plastic material and is assembled by mechanical clamping.  
   
   
       14 . The method according to  claim 3 , wherein it comprises the step of producing a second end flange by means of an assembly operation.  
   
   
       15 . The method according to  claim 4 , wherein it comprises the step of producing a second end flange by means of an assembly operation.  
   
   
       16 . The method according to  claim 5 , wherein it comprises the step of producing a second end flange by means of an assembly operation.  
   
   
       17 . A freezing chamber, in ice cream making machines, wherein it is obtained using the method in accordance with  claim 8 .  
   
   
       18 . An ice cream making machine, wherein it comprises a chamber in accordance with  claim 17.