Heat exchange plate used for plate-type heat exchanger and plate-type heat exchanger provided with the heat exchange plate

Abstract

A heat exchange plate used for a plate-type heat exchanger. The heat exchange plate comprises: a heat exchange part ( 10 ); multiples protrusions ( 14 ) that protrude from a plate plane ( 12 ) to at least one side of the plate plane ( 12 ) in the heat exchange part ( 10 ), the multiple protrusions ( 14 ) being aligned along multiple lines; and a transition part ( 16 ) that is between adjacent protrudes ( 14 ) aligned along a line and that protrudes to at least one side of the plate plane ( 12 ), the size of the top of each protrusion ( 14 ) in a direction perpendicular to the line being larger than the size of the top of the transition part ( 16 ). Strength of the heat exchange plate of the plate-type heat exchanger is improved by increasing the size of a welding part or a bearing part.

What is claimed is: 
     
         1 . A heat exchange plate for a plate-type heat exchanger, the heat exchange plate comprising:
 a heat exchange part;   multiple protrusions which project at the heat exchange part from a plate plane to at least one side of the plate plane, the multiple protrusions being arranged along multiple lines; and   transitional parts which are located between adjacent protrusions arranged along one of the lines and project to the at least one side of the plate plane; in a direction perpendicular to the line, the size of the top of each protrusion is greater than the size of the top of the transitional part.   
     
     
         2 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 1 , wherein
 the distance from the top of the protrusion to the plate plane is greater than or equal to the distance from the top of the transitional part to the plate plane.   
     
     
         3 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 1 , wherein
 the top of the protrusion is substantially flat.   
     
     
         4 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 1 , wherein
 when viewed in a direction perpendicular to the line, the transitional part has a step between the top of the transitional part and the plate plane.   
     
     
         5 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 1 , wherein
 when viewed in a direction facing the plate plane, the multiple lines are arranged substantially in a V-shaped, W-shaped or wave-shaped pattern.   
     
     
         6 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 1 , wherein
 the distance from the top of the protrusion to the plate plane is greater than the distance from the top of the transitional part to the plate plane, and the distance from the top of the protrusion to the top of the transitional part is less than or equal to the distance from the top of the transitional part to the plate plane.   
     
     
         7 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 1 , wherein
 amongst protrusions and transitional parts arranged along one of the lines, the protrusions are connected via corresponding transitional parts, and together with the transitional parts form an entire ridge.   
     
     
         8 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 3 , wherein
 the top of the protrusion is substantially round.   
     
     
         9 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 1 , wherein
 amongst protrusions and transitional parts arranged along one of the lines, the protrusions are connected via corresponding transitional parts, and together with the transitional parts form an entire ridge;   ridges projecting to one side of the plate plane are arranged alternately with ridges projecting to another side, which is opposite to said side, of the plate plane.   
     
     
         10 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 9 , wherein
 protrusions in a ridge projecting to one side of the plate plane are staggered in the longitudinal direction of the ridge with respect to protrusions in an adjacent ridge projecting to the other side of the plate plane.   
     
     
         11 . A plate-type heat exchanger, comprising:
 the heat exchange plate for a plate-type heat exchanger as claimed in  claim 1 .   
     
     
         12 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 2 , wherein
 the top of the protrusion is substantially flat.   
     
     
         13 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 2 , wherein
 when viewed in a direction perpendicular to the line, the transitional part has a step between the top of the transitional part and the plate plane.   
     
     
         14 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 2 , wherein
 when viewed in a direction facing the plate plane, the multiple lines are arranged substantially in a V-shaped, W-shaped or wave-shaped pattern.   
     
     
         15 . The heat exchange plate for a plate-type heat exchanger as claimed in  claim 2 , wherein
 amongst protrusions and transitional parts arranged along one of the lines, the protrusions are connected via corresponding transitional parts, and together with the transitional parts form an entire ridge;   ridges projecting to one side of the plate plane are arranged alternately with ridges projecting to another side, which is opposite to said side, of the plate plane.