Heat exchanger

Abstract

A heat exchanger includes: a pipe forming a flow path through which a first fluid is fed; a pair of partition plates provided at an interval in an extending direction of the flow path to block the flow path, to partition a closed space at a portion of the flow path; a plurality of heat transfer tubes having a tubular shape with both ends being open, extending so as to penetrate the pair of partition plates, and arranged side by side with intervals therebetween; a feeding part configured to feed a second fluid from an outside of the pipe to the closed space; and a discharging part configured to discharge the second fluid in the closed space to the outside of the pipe.

1 - 8 . (canceled) 
     
     
         9 . A heat exchanger comprising:
 a pipe forming a flow path through which a first fluid is fed;   a pair of partition plates provided at an interval in an extending direction of the flow path to block the flow path, to partition a closed space at a portion of the flow path;   a plurality of heat transfer tubes having a tubular shape with both ends being open, extending so as to penetrate the pair of partition plates, and arranged side by side with intervals therebetween;   a feeding part configured to feed a second fluid from an outside of the pipe to the closed space; and   a discharging part provided on an upstream side of a flow of the first fluid with respect to the feeding part, and configured to discharge the second fluid in the closed space to the outside of the pipe,   wherein the heat transfer tube has a cross section of a hexagonal shape between the pair of partition plates in the closed space, when viewed in the extending direction, and   the heat exchanger further includes a plurality of fins protruding from an inner surface of the heat transfer tube, extending in the extending direction, and provided at an interval along the inner surface.   
     
     
         10 . The heat exchanger according to  claim 9 ,
 wherein the heat transfer tube among the plurality of heat transfer tubes is configured to have a larger cross-sectional area of the flow path as the heat transfer tube is disposed in a region having a smaller flow rate.   
     
     
         11 . A heat exchanger comprising:
 a pipe forming a flow path through which a first fluid is fed;   a pair of partition plates provided at an interval in an extending direction of the flow path to block the flow path, to partition a closed space at a portion of the flow path;   a plurality of heat transfer tubes having a tubular shape with both ends being open, extending so as to penetrate the pair of partition plates, and arranged side by side with intervals therebetween;   a feeding part configured to feed a second fluid from an outside of the pipe to the closed space; and   a discharging part configured to discharge the second fluid in the closed space to the outside of the pipe,   wherein the heat transfer tube has a cross section of a polygonal shape, when viewed in the extending direction,   the heat exchanger further includes a plurality of fins protruding from an inner surface of the heat transfer tube, extending in the extending direction, and provided at intervals along the inner surface, and   the plurality of heat transfer tubes are configured such that the heat transfer tube disposed in a region having a smaller flow rate has a larger cross-sectional area of the flow path.   
     
     
         12 . The heat exchanger according to  claim 9 ,
 wherein the fin extends so as to turn along the inner surface from an upstream side to a downstream side in the extending direction.   
     
     
         13 . The heat exchanger according to  claim 9 ,
 wherein the second fluid is configured to flow through the interval between the plurality of heat transfer tubes in the closed space.   
     
     
         14 . The heat exchanger according to  claim 9 , further comprising:
 a blocking part blocking only a portion of the interval between the heat transfer tubes,   wherein a plurality of the blocking parts are provided at an interval in the extending direction, and the blocking parts adjacent to each other have the blocking regions different from each other.   
     
     
         15 . The heat exchanger according to  claim 9 , further comprising:
 a supporting part provided between the heat transfer tubes.