Shell-and-tube heat exchanger

Abstract

A shell-and-tube heat exchanger has a tubular shell, two tube panels mounted in the shell, multiple heat transfer tubes axially mounted on and between the tube panels, an inlet tube mounted in the shell and connected to a shell side inlet of the shell, a spurting tube axially mounted in the shell and connected to the inlet tube, and a front cover and a rear cover respectively mounted on a front opening and a rear opening of the shell. Shell side fluid spurts into the shell from the spurting tube toward a specific direction. The shell side fluid does not become turbulent, no air film occurs in the shell and lower surfaces of the heat transfer tubes act as heating surfaces so the heat exchanger has high heat transfer efficiency.

1 . A shell-and-tube heat exchanger comprising
 a shell assembly having
 a shell being tubular and having a front opening, a rear opening, a shell side inlet and a shell side outlet; 
 two tube panels respectively mounted at and covering the front opening and the rear opening of the shell; 
 multiple heat transfer tubes axially mounted in the shell, and each heat transfer tube having two ends respectively mounted through the tube panels and corresponding to the front opening and the rear opening of the shell; 
 an inlet tube mounted in the shell and having an inner end and an outer end connected to and communicating with the shell side inlet of the shell; and 
 a spurting tube axially mounted in the shell and having
 a first end connected to and communicating with the inner end of the inlet tube; 
 a second end; and 
 multiple spurting holes separately formed through the spurting tube; 
 
   a front cover securely mounted on the front opening of the shell and having a tube side inlet formed through the front cover and communicating with the heat transfer tubes; and   a rear cover securely mounted on the rear opening of the shell and having a tube side outlet formed through the rear cover and communicating with the heat transfer tubes.   
     
     
         2 . The heat exchanger as claimed in  claim 1  further comprising a first guiding panel mounted in the front cover, curving toward the tube side inlet of the front cover and having multiple guide holes separately formed through the first guiding panel. 
     
     
         3 . The heat exchanger as claimed in  claim 2  further comprising a second guiding panel being flat, mounted between the first guiding panel and the tube panel that is mounted at the front opening of the shell, and having multiple guide holes separately formed through the second guiding panel. 
     
     
         4 . The heat exchanger as claimed in  claim 1 , wherein the spurting tube is disposed at a bottom of the shell. 
     
     
         5 . The heat exchanger as claimed in  claim 2 , wherein the spurting tube is disposed at a bottom of the shell. 
     
     
         6 . The heat exchanger as claimed in  claim 3 , wherein the spurting tube is disposed at a bottom of the shell. 
     
     
         7 . The heat exchanger as claimed in  claim 4 , wherein the closer the spurting holes are to the first end of the spurting tube, with the higher density the spurting holes are distributed. 
     
     
         8 . The heat exchanger as claimed in  claim 5 , wherein the closer the spurting holes are to the first end of the spurting tube, with the higher density the spurting holes are distributed. 
     
     
         9 . The heat exchanger as claimed in  claim 6 , wherein the closer the spurting holes are to the first end of the spurting tube, with the higher density the spurting holes are distributed. 
     
     
         10 . The heat exchanger as claimed in  claim 7 , wherein
 the shell assembly further has
 multiple partition panels separately arranged in the shell and between the tube panels; and 
 multiple supporting rods axially mounted in the shell and through the partition panels; and 
   the heat transfer tubes and the spurting tube are mounted through the partition panels.   
     
     
         11 . The heat exchanger as claimed in  claim 8 , wherein
 the shell assembly further has
 multiple partition panels separately arranged in the shell and between the tube panels; and 
 multiple supporting rods axially mounted in the shell and through the partition panels; and 
   the heat transfer tubes and the spurting tube are mounted through the partition panels.   
     
     
         12 . The heat exchanger as claimed in  claim 9 , wherein
 the shell assembly further has
 multiple partition panels separately arranged in the shell and between the tube panels; and 
 multiple supporting rods axially mounted in the shell and through the partition panels; and 
   the heat transfer tubes and the spurting tube are mounted through the partition panels.   
     
     
         13 . The heat exchanger as claimed in  claim 10 , wherein the shell assembly further has
 an upper guiding panel mounted on an inner wall of the inlet tube, disposed adjacent to the inner end of the inlet tube and protruding inwardly and downwardly; and   a lower guiding panel mounted on an inner wall of the spurting tube, disposed adjacent to the first end of the spurting tube and protruding inwardly and downwardly.   
     
     
         14 . The heat exchanger as claimed in  claim 11 , wherein the shell assembly further has
 an upper guiding panel mounted on an inner wall of the inlet tube, disposed adjacent to the inner end of the inlet tube and protruding inwardly and downwardly; and   a lower guiding panel mounted on an inner wall of the spurting tube, disposed adjacent to the first end of the spurting tube and protruding inwardly and downwardly.   
     
     
         15 . The heat exchanger as claimed in  claim 12 , wherein the shell assembly further has
 an upper guiding panel mounted on an inner wall of the inlet tube, disposed adjacent to the inner end of the inlet tube and protruding inwardly and downwardly; and   a lower guiding panel mounted on an inner wall of the spurting tube, disposed adjacent to the first end of the spurting tube and protruding inwardly and downwardly.   
     
     
         16 . The heat exchanger as claimed in  claim 13 , wherein the spurting tube further has a drain hole formed through the spurting tube and disposed adjacent to the second end of the spurting tube. 
     
     
         17 . The heat exchanger as claimed in  claim 14 , wherein the spurting tube further has a drain hole formed through the spurting tube and disposed adjacent to the second end of the spurting tube. 
     
     
         18 . The heat exchanger as claimed in  claim 15 , wherein the spurting tube further has a drain hole formed through the spurting tube and disposed adjacent to the second end of the spurting tube. 
     
     
         19 . The heat exchanger as claimed in  claim 17 , wherein the tube side outlet of the rear cover is disposed higher than the tube side inlet of the front cover. 
     
     
         20 . The heat exchanger as claimed in  claim 18 , wherein the tube side outlet of the rear cover is disposed higher than the tube side inlet of the front cover.