SWEETENED CONDENSED MILK CONDENSING 79 



cold water spray and are condensed. The bottom of the con- 

 denser cylinder, at the end farthest from the pan is connected 

 with the suction end of the vacuum pump through which the 

 water and the condensed vapors in the condenser escape. Man- 

 holes with covers should be provided at the top and end of the 

 condenser cylinder to facilitate the cleaning" out of the condenser. 

 In the vertical spray condenser the condenser cylinder is 

 upright, located either on top of the pan or at some distance, as 

 is the case, for instance, where a catch-all is installed between 



Fig*. 27. Diagonal spray condenser 

 Courtesy of Mojonnier Bros. Co. 



pan and condenser. The interior arrangement of the vertical 

 condenser varies somewhat with the different makes. One type 

 of vertical condenser widely used in American condenseries con- 

 sists of a double insulated vapor tube resting on top of the pan. 

 This insulated tube is surrounded by and connects with a spray 

 chamber, which terminates at its top in a perforated metal plate, 

 and \vhich has an opening in the side near the bottom that con- 

 nects with the vacuum pump supplying the suction and that 

 permits the escape of the condensed vapors and cooling water. 

 The cooling water enters at the top of the condenser. Immediately 

 underneath the w r ater inlet it strikes a metal cone or umbrella 

 which prevents the water from running into the vapor tube, and 



