Header pipe, heat exchanger, method for manufacturing header pipe, and method for manufacturing heat exchanger

A header pipe, comprising:

• an outer tube to which a plurality of heat transfer tubes are connected;
• an inner tube inserted in the outer tube and having a plurality of pores;
• and
• two fixing members spaced from each other in a longitudinal direction of the outer tube and fixing the inner tube to the outer tube, the two fixing members closing a clearance between the inner tube and the outer tube in the longitudinal direction of the outer tube, wherein
• the two fixing members each have an insertion hole through which the inner tube extends in the longitudinal direction of the header pipe, and
• the insertion hole included in at least one of the two fixing members has a planar shape dissimilar to a cross section of the inner tube when the header pipe is viewed in the longitudinal direction of the header pipe.

A header pipe, comprising:

• an outer tube to which a plurality of heat transfer tubes are connected;
• an inner tube inserted in the outer tube and having a plurality of pores;
• and
• a plurality of supporters spaced from one another in a longitudinal direction of the outer tube and supporting the inner tube, wherein
• a space between the inner tube and the outer tube includes a clearance for a refrigerant to flow in the header pipe through the plurality of supporters in a longitudinal direction of the header pipe,
• the outer tube includes
• a body to which the plurality of heat transfer tubes are connected, the body having a grooved cross section in a cross section of the header pipe taken along a plane orthogonal to a longitudinal axis of the header pipe, and
• a bottom plate attached to an open end of the body in the grooved cross section,
• the body of the outer tube includes a fit groove, and
• the supporter includes a protrusion fitted to the fit groove.