Spray type heat exchange device

Abstract

A spray type heat exchange device includes a spray unit, a first group set of heat transfer tubes, at least a distributing unit and a second group set of heat transfer tubes. The distributing unit redistributes the remaining liquid refrigerant that is sprayed out from the spray unit and flowed through the first group set of heat transfer tubes, and the remaining liquid refrigerant is dropped downwardly to the second group set of heat transfer tubes. By this disclosed method, the inner space of the heat exchange device could be fully utilized to configure and accommodate more heat transfer tubes therein.

1 . A spray type heat exchange device comprises:
 a shell;   a spray unit installed in the shell for downwardly spraying refrigerant;   a first group set of heat transfer tubes installed in the shell and capable of contacting the refrigerant sprayed out from the spray unit for heat exchange; and   a second group set of heat transfer tubes installed in the shell and disposed below the first group set of heat transfer tubes and capable of contacting the refrigerant dripped from the first group set of heat transfer tubes for heat exchange.   
   
   
       2 . The device of  claim 1 , wherein the spray unit is disposed at a position such that the distance from the spray surface of the spray unit to the lower side of the top portion of the shell is 5% to 25% of the inner diameter of the shell. 
   
   
       3 . The device of  claim 1 , wherein at least one distributing unit is disposed between the first and second group sets of heat transfer tubes, the distributing unit having a plurality of dripping holes and/or dripping slots disposed on surface thereof. 
   
   
       4 . The device of  claim 3 , wherein the distributing unit has a nearly opened rectangular section. 
   
   
       5 . The device of  claim 4 , wherein walls around the distributing unit extend obliquely outward. 
   
   
       6 . The device of  claim 3 , wherein the distributing unit has a smooth curve shaped section with an opening upward. 
   
   
       7 . The device of  claim 3 , wherein the distributing unit is disposed at a position such that the distance from the surface of the distributing unit to the lower side of the top portion of the shell is 40% of the inner diameter of the shell. 
   
   
       8 . The device of  claim 3 , wherein spacing is formed between the distributing unit and the shell and/or between the distributing units such that refrigerant steam can pass through. 
   
   
       9 . The device of  claim 1 , wherein adjacent upper and lower columns of heat transfer tubes of the first group set of heat transfer tubes are alternately arranged. 
   
   
       10 . The device of  claim 1 , wherein adjacent upper and lower columns of heat transfer tubes of the second group set of transfer tubes are alternately arranged. 
   
   
       11 . A spray type heat exchange device comprises:
 a shell;   a spray unit installed in the shell for downwardly spraying refrigerant;   a first group set of heat transfer tubes installed in the shell and capable of contacting the refrigerant sprayed out from the spray unit for heat exchange;   a second group set of heat transfer tubes installed in the shell and disposed below the first group set of heat transfer tubes and capable of contacting the refrigerant dripped from the first group set of heat transfer tubes for heat exchange; and   a third group set of heat transfer tubes installed in the shell and disposed below the second group set of heat transfer tubes and capable of contacting the refrigerant dripped from the second group set of heat transfer tubes for heat exchange.   
   
   
       12 . The device of  claim 11 , wherein at least one distributing unit having a plurality of dripping holes and/or dripping slots on surface thereof is disposed between the first and second group sets of heat transfer tubes and between the second and third group sets of heat transfer tubes. 
   
   
       13 . The device of  claim 12 , wherein the distributing unit has a nearly opened rectangular section. 
   
   
       14 . The device of  claim 13 , wherein walls around the distributing unit extend obliquely outward. 
   
   
       15 . The device of  claim 12 , wherein the distributing unit has a smooth curve shaped section with an opening upward. 
   
   
       16 . The device of  claim 12 , wherein spacing is formed between the distributing unit located between the second and third group sets of heat transfer tubes and the shell and/or between the distributing units located between the second and third group sets of heat transfer tubes such that refrigerant steam can pass through. 
   
   
       17 . The device of any of  claims 12  to  16 , wherein the distributing unit between the second and third group sets of heat transfer tubes is disposed at a position such that the distance from the surface of the distributing unit to the lower side of the top portion of the shell is 45% to 50% of the inner diameter of the shell. 
   
   
       18 . The device of any of  claims 12  to  16 , wherein the distributing unit between the first and second group sets of heat transfer tubes is disposed at a position such that the distance from the surface of the distributing unit to the lower side of the top portion of the shell is 20% to 30% of the inner diameter of the shell. 
   
   
       19 . The device of  claim 11 , wherein adjacent upper and lower columns of heat transfer tubes of the third group set of heat transfer tubes are alternately arranged. 
   
   
       20 . The device of  claim 11 , wherein the spray unit is disposed at a position such that the distance from the spray surface of the spray unit to the lower side of the top portion of the shell is 5% to 25% of the inner diameter of the shell.