Heat exchanger

Abstract

A heat exchanger includes a first plate, a first connecting part, a second plate, a second connecting part, and a third plate; the second plate is located between the first plate and the third plate; the heat exchanger comprises a first side part and a second side part; the first connecting part is located on the first side part of the heat exchanger; the second connecting part is located on the second side part of the heat exchanger; the first connecting part, the first plate, and the second plate are of an integrated structure; the second connecting part, the second plate, and the third plate are of an integrated structure; a first circulation channel is formed between the first plate and the second plate; the first plate and the second plate are arranged in a sealed mode; a second circulation channel is formed between the second plate and the third plate; the second plate and the third plate are arranged in a sealed mode.

What is claimed is: 
     
         1 . A heat exchanger, comprising a heat-exchanging plate, wherein the heat-exchanging plate comprises: a first plate, a second plate, and a third plate, and the second plate is located between the first plate and the third plate,
 a first direction is defined to be perpendicular to a stacking direction of the heat-exchanging plate, wherein the heat exchanger comprises a first side portion and a second side portion, which are arranged on two opposite sides of the heat exchanger in the first direction,   the heat exchanger further comprises a first connecting portion and a second connection portion, wherein the first connecting portion is located on the first side portion and the second connection portion is located on the second side portion,   the first connecting portion, the second connection portion, the third plate, the first plate, and the second plate are formed into an integrated structure.   
     
     
         2 . The heat exchanger according to  claim 1 , wherein a first flow passage is formed between the first plate and the second plate, the first plate and the second plate are arranged in a sealed manner, and an area sealed by the first plate and the second plate at least encloses the first flow passage,
 a second flow passage is formed between the second plate and the third plate, the second plate and the third plate are arranged in a sealed manner, and an area sealed by the second plate and the third plate at least encloses the second flow passage.   
     
     
         3 . The heat exchanger according to  claim 1 , wherein the second plate comprises a first base portion and a first convex portion protruding relative to the first base portion, and the first convex portion is arranged around the second flow passage,
 the first convex portion and the third plate are arranged in a sealed manner, and the first convex portion and the first plate are arranged in a sealed manner.   
     
     
         4 . The heat exchanger according to  claim 3 , wherein the first plate comprises a second base portion and a second convex portion protruding relative to the second base portion, a protruding direction of the second convex portion is opposite to a protruding direction of the first convex portion , and the second base portion is arranged around the second convex portion,
 the first base portion comprises a first outer base portion, the first outer base portion is arranged around the first convex portion, and the second base portion and the first outer base portion are arranged in a sealed manner.   
     
     
         5 . The heat exchanger according to  claim 3 , wherein the third plate comprises a third base portion and a third convex portion protruding relative to the third base portion, a protruding direction of the third convex portion is opposite to a protruding direction of the first convex portion,
 the third base portion is arranged around the third convex portion and the first convex portion and the third convex portion are arranged in a sealed manner.   
     
     
         6 . The heat exchanger according to  claim 4 , wherein the second convex portion is provided with a first convex portion protruding towards the second plate, and the first base portion comprises a first inner base portion, wherein the first convex portion is arranged around the first inner base portion , and at least a part of the first convex portion abuts against the first inner base portion. 
     
     
         7 . The heat exchanger according to  claim 5 , wherein the first base portion comprises a first inner base portion, the first convex portion is arranged around the first inner base portion,
 the first inner base portion is provided with a second convex portion protruding towards the third plate, the third convex portion is provided a third convex portion protruding away from the second plate, and at least a part of the second convex portion abuts against the third convex portion.   
     
     
         8 . The heat exchanger according to  claim 1 , further comprising a first corner duct, a second corner duct, a third corner duct, and a fourth corner duct,
 wherein the first flow passage is in communication with the first corner duct and the second corner duct, and the second flow passage is in communication with the third corner duct and the fourth corner duct.   
     
     
         9 . The heat exchanger according to  claim 1 , further comprising a fourth plate and a third connecting portion, wherein
 the third plate is located between the second plate and the fourth plate, the third connecting portion is located on the first side portion of the heat exchanger, and the third connecting portion, the third plate, and the fourth plate are formed into an integrated structure,   a third flow passage is provided between the third plate and the fourth plate, the third plate and the fourth plate are arranged in a sealed manner, and an area sealed by the third plate and the fourth plate at least encloses the third flow passage.   
     
     
         10 . The heat exchanger according to  claim 9 , further comprising a first corner duct, a second corner duct, a third corner duct, and a fourth corner duct, wherein
 the first flow passage is in communication with the first corner duct and the second corner duct, the second flow passage is in communication with the third corner duct and the fourth corner duct , and the third flow passage is in communication with the first corner duct and the second corner duct.   
     
     
         11 . The heat exchanger according to  claim 10 , wherein the first plate comprises a second base portion and a second convex portion protruding relative to the second base portion, the second base portion is arranged around the second convex portion,
 the second plate comprises a first base portion and a first convex portion protruding relative to the first base portion, the first base portion comprises a first inner base portion and a first outer base portion, the first convex portion is arranged around the first inner base portion and the first outer base portion is arranged around the first convex portion,   a protruding direction of the second convex portion is opposite to a protruding direction of the first convex portion,   the third plate comprises a third base portion and a third convex portion protruding relative to the third base portion, the third base portion is arranged around the third convex portion, and a protruding direction of the third convex portion is opposite to a protruding direction of the first convex portion,   the fourth plate comprises a fourth base portion and a fourth convex portion protruding relative to the fourth base portion, wherein the fourth base portion comprises a fourth inner base portion and a fourth outer base portion, the fourth convex portion is arranged around the fourth inner base portion, the fourth outer base portion is arranged around the fourth convex portion, and a protruding direction of the fourth convex portion is opposite to a protruding direction of the third convex portion,   the second base portion and the first outer base portion are arranged in a sealed manner, the first convex portion and the third convex portion are arranged in a sealed manner, and the third base portion and the fourth outer base portion are arranged in a sealed manner,   the second convex portion is provided with a first convex portion protruding towards the second plate, and at least a part of the first convex portion abuts against the first inner base portion, wherein the first inner base portion is provided with a second convex portion protruding towards the third plate, and at least a part of the second convex portion abuts against the third convex portion, wherein the third convex portion is provided a third convex portion protruding towards the fourth plate, and at least a part of the second convex portion abuts against the fourth inner base portion.   
     
     
         12 . The heat exchanger according to  claim 2 , wherein the second plate comprises a first base portion and a first convex portion protruding relative to the first base portion, and the first convex portion is arranged around the second flow passage,
 the first convex portion and the third plate are arranged in a sealed manner, and the first convex portion and the first plate are arranged in a sealed manner.   
     
     
         13 . The heat exchanger according to  claim 2 , further comprising a first corner duct, a second corner duct, a third corner duct, and a fourth corner duct,
 wherein the first flow passage is in communication with the first corner duct and the second corner duct, and the second flow passage is in communication with the third corner duct and the fourth corner duct.   
     
     
         14 . The heat exchanger according to  claim 3 , further comprising a first corner duct, a second corner duct, a third corner duct, and a fourth corner duct,
 wherein the first flow passage is in communication with the first corner duct and the second corner duct, and the second flow passage is in communication with the third corner duct and the fourth corner duct.   
     
     
         15 . The heat exchanger according to  claim 4 , further comprising a first corner duct, a second corner duct, a third corner duct, and a fourth corner duct,
 wherein the first flow passage is in communication with the first corner duct and the second corner duct, and the second flow passage is in communication with the third corner duct and the fourth corner duct.   
     
     
         16 . The heat exchanger according to  claim 5 , further comprising a first corner duct, a second corner duct, a third corner duct, and a fourth corner duct,
 wherein the first flow passage is in communication with the first corner duct and the second corner duct, and the second flow passage is in communication with the third corner duct and the fourth corner duct.   
     
     
         17 . The heat exchanger according to  claim 2 , further comprising a fourth plate and a third connecting portion, wherein
 the third plate is located between the second plate and the fourth plate, the third connecting portion is located on the first side portion of the heat exchanger, and the third connecting portion, the third plate, and the fourth plate are formed into an integrated structure,   a third flow passage is provided between the third plate and the fourth plate, the third plate and the fourth plate are arranged in a sealed manner, and an area sealed by the third plate and the fourth plate at least encloses the third flow passage.   
     
     
         18 . The heat exchanger according to  claim 3 , further comprising a fourth plate and a third connecting portion, wherein
 the third plate is located between the second plate and the fourth plate, the third connecting portion is located on the first side portion of the heat exchanger, and the third connecting portion, the third plate, and the fourth plate are formed into an integrated structure,   a third flow passage is provided between the third plate and the fourth plate, the third plate and the fourth plate are arranged in a sealed manner, and an area sealed by the third plate and the fourth plate at least encloses the third flow passage.   
     
     
         19 . The heat exchanger according to  claim 4 , further comprising a fourth plate and a third connecting portion, wherein
 the third plate is located between the second plate and the fourth plate, the third connecting portion is located on the first side portion of the heat exchanger, and the third connecting portion, the third plate, and the fourth plate are formed into an integrated structure,   a third flow passage is provided between the third plate and the fourth plate, the third plate and the fourth plate are arranged in a sealed manner, and an area sealed by the third plate and the fourth plate at least encloses the third flow passage.   
     
     
         20 . The heat exchanger according to  claim 5 , further comprising a fourth plate and a third connecting portion, wherein
 the third plate is located between the second plate and the fourth plate, the third connecting portion is located on the first side portion of the heat exchanger, and the third connecting portion, the third plate, and the fourth plate are formed into an integrated structure,   a third flow passage is provided between the third plate and the fourth plate, the third plate and the fourth plate are arranged in a sealed manner, and an area sealed by the third plate and the fourth plate at least encloses the third flow passage.