Multilayer heat exchanger and heat exchange system

Abstract

In a multilayer heat exchanger of the present invention, a plurality of heat exchange units for performing heat exchange of a fluid fed from a plurality of compressors is stacked. Each of the heat exchange units has a structure that pluralities of flow passage plates and cooling plates are stacked. Concave grooves formed on surfaces are formed as flow passages of the fluid in the flow passage plates and cooling plates. The flow passage plates and cooling plates are made of metal, the flow passages are formed by chemical etching, and the stacked metal flow passage plates and cooling plates are bonded to each other by diffusion-bonding. Further, each of the heat exchange units is in one-to-one correspondence with each of the compressors.

What is claimed is: 
     
         1 . A multilayer heat exchanger, comprising:
 a plurality of stacked heat exchange units for performing heat exchange of a fluid fed out from a plurality of machines, wherein   each of the heat exchange units has a structure that a plurality of flow passage plates is stacked, and   each of the flow passage plates has concave grooves formed on a surface as flow passages of the fluid.   
     
     
         2 . The multilayer heat exchanger according to  claim 1 , wherein
 each of the plurality of heat exchange units is paired with each of the plurality of machines.   
     
     
         3 . The multilayer heat exchanger according to  claim 2 , wherein
 each of the plurality of heat exchange units is provided with a supply hole through which the fluid is supplied to the heat exchange unit and a discharge hole through which the supplied fluid is discharged, and   the supply hole and the discharge hole provided in each of the heat exchange units are formed with length to directly communicate with an exterior along the stacking direction of the heat exchange unit in such a manner that arrangement positions thereof in a plan view are not overlapped with each other.   
     
     
         4 . The multilayer heat exchanger according to  claim 1 , wherein
 the flow passage plates are made of metal, and   the flow passages of the flow passage plates are formed by chemical etching.   
     
     
         5 . The multilayer heat exchanger according to  claim 4 , wherein
 the stacked metal flow passage plates are bonded to each other by diffusion-bonding.   
     
     
         6 . A heat exchange system, comprising:
 a plurality of machines for changing a heat amount of a fluid; and   a multilayer heat exchanger formed by stacking heat exchange units for performing heat exchange of the fluid whose heat amount is changed by the plurality of machines, wherein   the multilayer heat exchanger is the multilayer heat exchanger according to  claim 1 .