Plate, plate assembly and heat exchanger

Abstract

The present disclosure relates to the technical field of heat exchange devices, and in particular, to a plate, a plate assembly and a heat exchanger. The plate comprises a plate body and a first through hole and a second through hole provided on the plate body; the plate body forms a pipe segment around the first through hole, and the second through hole is arranged close to the outer periphery of the pipe segment.

1 . A plate, comprising a plate body and a first through hole and a second through hole provided on the plate body, with the plate body forming a pipeline section around the first through hole; and the second through hole arranged close to an outer periphery of the pipeline section. 
     
     
         2 . The plate according to  claim 1 , wherein the pipeline section is formed by a flange of an edge of the first through hole. 
     
     
         3 . The plate according to  claim 2 , wherein the flange is of a one-time flanging structure, and the flange is perpendicular to a plane of the plate body. 
     
     
         4 . The plate according to  claim 2 , wherein the flange is of a second-time flanging structure, and the flange at an end is parallel to a plane of the plate body. 
     
     
         5 . The plate according to  claim 1 , wherein the pipeline section protrudes upwards or protrudes downwards. 
     
     
         6 . The plate according to  claim 1 , wherein a plurality of second through holes are provided, and the plurality of second through holes are arranged around the pipeline section. 
     
     
         7 . The plate according to  claim 1 , wherein a ratio of a flow area of the first through hole to a flow area of the second through hole is not greater than 1:1. 
     
     
         8 . A plate assembly, comprising two plates according to  claim 1 , wherein the two plates are stacked, and pipeline sections of the two plates protrude toward each other and realize a surface contact connection. 
     
     
         9 . A heat exchanger, comprising a plurality of plate assemblies according to  claim 8 , wherein the plurality of plate assemblies are provided as stacked; and the channel segments in the plurality of plate assemblies are sequentially communicated to form a first flow channel; and second through holes in the plurality of plate assemblies are communicated to form a second flow channel. 
     
     
         10 . The heat exchanger according to  claim 9 , wherein the heat exchanger further comprises a first fluid inlet and a first fluid outlet; and the first flow channel is connected to the first fluid inlet, or the first flow channel is connected with the first fluid outlet. 
     
     
         11 . The heat exchanger according to  claim 9 , wherein the first flow channel and the second flow channel are blocked from each other in a direction perpendicular to a stacking direction of the plate assemblies. 
     
     
         12 . The heat exchanger according to  claim 9 , wherein the heat exchanger further comprises a plurality of bottom plates, and the plurality of bottom plates are stacked and provided below the plurality of plate assemblies, each of the bottom plates is provided thereon with a third through hole, and third through holes of the plurality of bottom plates are communicated to form a third flow channel, and the third flow channel is communicated to the first flow channel. 
     
     
         13 . The heat exchanger according to  claim 12 , wherein each of the bottom plates is further provided with a fourth through hole, and fourth through holes of the plurality of bottom plates are communicated to form a fourth flow channel. 
     
     
         14 . The heat exchanger according to  claim 13 , wherein a turning member is provided in the fourth flow channel to divide the fourth flow channel into a fifth flow channel and a sixth flow channel in a stacking direction of the plate assemblies, wherein the fifth flow channel is located above the sixth flow channel. 
     
     
         15 . The heat exchanger according to  claim 9 , wherein each of the plate assemblies forms one first fluid channel, and each pair of bottom plates forms one first fluid channel; and a plurality of first fluid channels are divided, from bottom to top, into a first channel segment, a second channel segment and a third channel segment. 
     
     
         16 . The heat exchanger according to  claim 15 , wherein the first channel segment is located between the third flow channel and a lower part of the sixth flow channel, and the second channel segment is located between a lower part of the second flow channel and a upper part of the sixth flow channel, and the third channel segment is located between a upper part of the second flow channel and the fifth flow channel. 
     
     
         17 . The heat exchanger according to  claim 16 , wherein at least two numbers of number of the first fluid channels of the first channel segment, number of the first fluid channels of the second channel segment and number of the first fluid channels of the third channel segment are same. 
     
     
         18 . The heat exchanger according to  claim 16 , wherein number of the first fluid channels of the first channel segment, number of the first fluid channels of the second channel segment and number of the first fluid channels of the third channel segment are in order of being increased sequentially. 
     
     
         19 . The heat exchanger according to  claim 9 , wherein one second fluid channel is formed between adjacent plate assemblies, and one second fluid channel is formed between two adjacent bottom plates in pair. 
     
     
         20 . The heat exchanger according to  claim 19 , wherein the plurality of first fluid channels and a plurality of second fluid channels are alternately arranged.