A flash tank for an hvac system

Abstract

The present disclosure discloses a flash tank for an HVAC system that minimizes liquid carryover and make its size be smaller. The flash tank includes a housing that houses one or more flashing units. The flashing unit comprises an inner shell, an outer shell maintaining a gap with the inner shell, and one or more inlets to direct flow of refrigerant through the gap to aid partial evaporation of the refrigerant.

What is claimed is: 
     
         1 . A flash tank for housing one or more flashing units, wherein one or more flashing unit comprises:
 an inner shell;   an outer shell maintaining a gap with the inner shell; and   one or more inlets to direct flow of refrigerant through the gap to aid partial evaporation of the refrigerant.   
     
     
         2 . The flash tank of  claim 1 , wherein the gap is sealed at top. 
     
     
         3 . The flash tank of  claim 1 , wherein the inner shell includes a passage to allow passing of vapor refrigerant. 
     
     
         4 . The flash tank of  claim 3 , wherein the flashing unit includes a restrictor placed in the passage to minimize liquid refrigerant carryover, the restrictor includes:
 a restricting member attached to an inner surface of the inner shell and extending beyond the inner shell in a downward direction; and   an end plate connected to the restricting member.   
     
     
         5 . The flash tank of  claim 1 , wherein an inner shell is shorter than the outer shell. 
     
     
         6 . The flash tank of  claim 1 , which includes a horizontal housing and the one or more flashing units are placed vertically in the housing. 
     
     
         7 . The flash tank of  claim 6 , which includes one or more baffles arranged within the housing to minimize liquid carryover. 
     
     
         8 . The flash tank of  claim 7 , wherein the one or more baffles are connected to the one or more flashing units. 
     
     
         9 . The flash tank of  claim 7 , wherein the one or more baffles are connected to the flashing unit and the housing. 
     
     
         10 . The flash tank of  claim 1 , wherein the one or more flashing units include two inlets to receive refrigerant, the inlets are arranged diametrically opposite on the flashing unit. 
     
     
         11 . A flash tank comprising:
 a horizontal housing; and   one or more vertical flashing units provided within the horizontal housing to:   at least partially evaporate refrigerant; and   separate vapor refrigerant from liquid refrigerant.