Plate type heat exchanger

Abstract

A plate type heat exchanger includes a large number of plates formed by arranging plates each having concave and convex portions parallel to each other; and a large number of spacers sandwiched between the large number of plates, wherein the spacers include first spacers which are disposed on edges of a plate surface of the plate with a predetermined distance therebetween form a first flow passage in cooperation with the plate surface; and second spacers which are disposed on edges of a plate surface of the plate with a predetermined distance therebetween form a second flow passage having an inlet and an outlet which differ in direction from the first flow passage in cooperation with the plate surface, and the first spacers and the second spacers are alternately arranged between the large number of plates.

1 . A plate type heat exchanger comprising:
 a large number of plates formed by arranging plates each having concave and convex portions parallel to each other; and   a large number of spacers sandwiched between the large number of plates, wherein   the spacers include: first spacers where the first spacers which are disposed on edges of a plate surface of the plate with a predetermined distance therebetween form a first flow passage in cooperation with the plate surface; and second spacers where the second spacers which are disposed on edges of a plate surface of the plate with a predetermined distance therebetween form a second flow passage having an inlet and an outlet which differ in direction from an inlet and an outlet of the first flow passage in cooperation with the plate surface, and   the first spacers and the second spacers are alternately arranged between the large number of plates.   
     
     
         2 . The plate type heat exchanger according to  claim 1 , wherein the inlet and the outlet of the second flow passage are arranged orthogonal to an inlet and an outlet of the first flow passage. 
     
     
         3 . The plate type heat exchanger according to  claim 2 , wherein the first spacer is formed of a pair of L-shaped spacers arranged at corners of the plate surface in an opposedly facing manner and the second spacer is formed of a pair of straight-line spacers arranged in an extending manner on both edges of the plate surface parallel to each other. 
     
     
         4 . The plate type heat exchanger according to  claim 1 , wherein the plate is a press-formed plate on which the concave and convex portions are formed by press working. 
     
     
         5 . The plate type heat exchanger according to  claim 1 , wherein the concave and convex portions formed on the plate are formed of: cylindrical concave and convex portions formed on a center portion of the plate; and dotted concave and convex portions formed on the plate on both sides of the center portion in an axial direction of the cylindrical concave and convex portions. 
     
     
         6 . The plate type heat exchanger according to  claim 1 , wherein the convex portions formed on one plate and a flat surface portion of another plate disposed adjacently to the plate are joined to each other. 
     
     
         7 . The plate type heat exchanger according to  claim 1 , wherein a large number of integral type heat transfer plates are arranged parallel to each other, wherein the integral type heat transfer plate is formed such that the first spacers or the second spacers are sandwiched between two plates, two plates are formed into an integral body by joining the convex portions formed on one plate and the flat surface portion of the other plate to each other, and the second spacers or the first spacers are disposed on both outer side surfaces of the two plates. 
     
     
         8 . The plate type heat exchanger according to  claim 7 , wherein a large number of integral type heat transfer plates are arranged parallel to each other, wherein the integral type heat transfer plate is formed such that L-shape spacers are sandwiched between two plates, and straight-line spacers are formed on both outer side surfaces of the two plates. 
     
     
         9 . The plate type heat exchanger according to  claim 1 , wherein a liquid pool is disposed below the plates. 
     
     
         10 . An integral type heat transfer plate which is the heat transfer plate used in the plate type heat exchanger described in  claim 1 , wherein the integral type heat transfer plate is formed such that the first spacers or the second spacers are sandwiched between two plates, two plates are formed into an integral body by joining the convex portions formed on one plate and the flat surface portion of the other plate to each other, and the second spacers or the first spacers are disposed on both outer side surfaces of the two plates. 
     
     
         11 . The integral type heat transfer plate according to  claim 10 , wherein L-shaped spacers are sandwiched between two plates, and straight-line spacers are disposed on both outer side surfaces of the two plates.