Header assembly and heat exchanger

Abstract

Disclosed are a header assembly (100) for a heat exchanger and a heat exchanger having the header assembly (100). The header assembly (100) includes: an outer tube (1), the outer tube (1) having a tube wall (11); an inner tube (2), the inner tube (2) being provided in the outer tube (1) and having a tube wall (21) and a through hole (22) penetrating through the tube wall (21) of the inner tube (2), and a cavity (30) being formed between the outer tube (1) and the inner tube (2); and an opening (12) formed in the tube wall (11) a of the outer tube (1) and used for communicating the cavity (30) between the outer tube (1) and the inner tube (2) with a heat exchange g tube. The header assembly (100) and the heat exchanger having the header assembly (100) can improve heat exchange efficiency.

1 . A header assembly for a heat exchanger, comprising:
 an outer tube, having a tube wall;   an inner tube, disposed within the outer tube and having a tube wall and a through-hole penetrating the tube wall of the inner tube, with a cavity being formed between the outer tube and inner tube; and   an opening, formed in the tube wall of the outer tube and configured to connect the cavity between the outer tube and inner tube with a heat exchange tube.   
     
     
         2 . The header assembly for a heat exchanger as claimed in  claim 1 , further comprising:
 a connecting duct extending outward from the tube wall of the outer tube and used for connecting the heat exchange tube; the opening connects the cavity between the outer tube and inner tube with the heat exchange tube via an internal hole of the connecting duct.   
     
     
         3 . The header assembly for a heat exchanger as claimed in  claim 1 , wherein:
 an end of the heat exchange tube is inserted in the internal hole of the connecting duct.   
     
     
         4 . The header assembly for a heat exchanger as claimed in  claim 1 , wherein:
 the inner tube is a single inner tube.   
     
     
         5 . The header assembly for a heat exchanger as claimed in  claim 1 , further comprising:
 a dividing member, which divides the cavity into multiple mutually isolated chambers arranged in the axial direction of the outer tube, the multiple chambers comprising a first chamber and a second chamber, wherein:   the opening comprises a first opening and a second opening;   the heat exchange tube comprises a first heat exchange tube and a second heat exchange tube; and   the inner tube comprises:   a first inner tube, having a first tube wall and a first through-hole penetrating the first tube wall of the first inner tube, the first through-hole leading to the first chamber, and the first opening connecting the first chamber with the first heat exchange tube; and   a second inner tube, having a second tube wall and a second through-hole penetrating the second tube wall of the second inner tube, the second through-hole leading to the second chamber, and the second opening connecting the second chamber with the second heat exchange tube.   
     
     
         6 . The header assembly for a heat exchanger as claimed in  claim 5 , wherein:
 multiple sets of first chamber(s) and multiple sets of second chamber(s) are arranged alternately, each of the multiple sets of first chamber(s) comprising one or more first chamber, and each of the multiple sets of second chamber(s) comprising one or more second chamber.   
     
     
         7 . The header assembly for a heat exchanger as claimed in  claim 5 , wherein:
 each of the first chamber and second chamber comprises a first compartment located at that side of the first inner tube and second inner tube which is remote from the opening, and a second compartment located at that side of the first inner tube and second inner tube which is close to the opening; the first through-hole and second through-hole lead to the first compartments of the first chamber and second chamber respectively, and the first compartments are in communication with the second compartments.   
     
     
         8 . The header assembly for a heat exchanger as claimed in  claim 7 , wherein:
 the first compartment of the first chamber is in communication with the second compartment of the first chamber via a first communication hole formed in at least one of the tube wall of the outer tube, the tube wall of the first inner tube and the tube wall of the second inner tube; and   the first compartment of the second chamber is in communication with the second compartment of the second chamber via a second communication hole formed in at least one of the tube wall of the outer tube, the tube wall of the first inner tube and the tube wall of the second inner tube.   
     
     
         9 . The header assembly for a heat exchanger as claimed in  claim 8 , wherein:
 the first through-hole is located at that side of the center line of the first inner tube which is close to the second inner tube, and the first communication hole is located at that side of the first inner tube which is remote from the second inner tube; and   the second through-hole is located at that side of the center line of the second inner tube which is close to the first inner tube, and the second communication hole is located at that side of the second inner tube which is remote from the first inner tube.   
     
     
         10 . The header assembly for a heat exchanger as claimed in  claim 8 , wherein:
 the first compartment of the first chamber is in communication with the second compartment of the first chamber via the first communication hole alone; and   the first compartment of the second chamber is in communication with the second compartment of the second chamber via the second communication hole alone.   
     
     
         11 . The header assembly for a heat exchanger as claimed in  claim 1 , wherein:
 the header assembly is formed by 3D printing.   
     
     
         12 . A heat exchanger, comprising:
 the header assembly as claimed in  claim 1 .