Heat exchanger

Abstract

Provided is a heat exchanger. The heat exchanger includes a plurality of refrigerant tubes through which a refrigerant flows, a header including a tube connection part coupled to the plurality of refrigerant tubes and a refrigerant inflow part, a first pipe provided in the header to define a first flow space for the refrigerant, a second pipe surrounding the outside of the first pipe to define a second flow space for the refrigerant, and a communication hole defined in the first or second pipe to allow the refrigerant to pass therethrough.

1 - 20 . (canceled) 
     
     
         21 . A heat exchanger comprising:
 a plurality of refrigerant tubes through which a refrigerant flows;   a header to which the plurality of refrigerant tubes are coupled, the header defining a flow space for the refrigerant;   a first pipe provided within the header to define a first passage for the refrigerant, the first pipe having a first communication hole through which the refrigerant passes; and   a second pipe accommodating the first pipe to define a second passage for the refrigerant, the second pipe having a second communication hole through which the refrigerant passes,   wherein a flow direction of the refrigerant discharged through the first communication hole and a flow direction of the refrigerant discharged through the second communication hole are different from each other with respect to the refrigerant tube,   wherein the first and second communication holes are defined in the respective first and second pipes so that the flow directions of the refrigerant discharged through the first and second communication holes are opposite to each other,   wherein a distance between the first communication hole and an end of the first pipe is different from a distance between the second communication hole and an end of the second pipe,   wherein the first communication holes and the second communication holes are alternately defined with respect to a horizontal direction in which the header extends.   
     
     
         22 . The heat exchanger according to  claim 21 , wherein the flow direction of the refrigerant discharged through the first communication hole is closer to the refrigerant tube than the flow direction of the refrigerant discharged through the second communication hole. 
     
     
         23 . The heat exchanger according to  claim 21 , wherein the communication hole is defined in the first pipe with respect to the second pipe so that the refrigerant discharged through the first communication hole divides to flow into the second passage. 
     
     
         24 . The heat exchanger according to  claim 21 , wherein the second communication hole is defined in the second pipe with respect to the header so that the refrigerant discharged through the second communication hole divides to flow into a flow space of the header. 
     
     
         25 . The heat exchanger according to  claim 21 , wherein the header comprises a horizontal type header extending in a horizontal direction, and the first and second communication holes are defined on a virtual vertical line that is perpendicular to the horizontal direction of the horizontal type header.