Manifold assembly and heat exchanger

A manifold assembly, comprising:

• a manifold, the manifold comprising a manifold wall, and the manifold wall being provided with a through hole penetrating the manifold wall;
• and
• a connecting tube assembly, the connecting tube assembly comprising:
• an adapter, the adapter comprising:
• a tubular part which extends in a direction intersecting with an axial direction of the manifold and is located outside of the manifold;
• and a stepped part which protrudes inward from an inner surface of the tubular part at an end part of the tubular part facing the manifold;
• and
• a diverter, the diverter comprising:
• an end wall;
• a connecting wall extending from the end wall in a direction intersecting with an axial direction of the manifold;
• and a stepped part which protrudes outward from the connecting wall at an end part of the connecting wall away from the end wall, wherein the diverter is inserted into the through hole of the manifold through an inner hole of the adapter, the stepped part of the diverter abuts against the stepped part of the adapter on one side facing the end wall, and a portion of the connecting wall that is inserted into the manifold is provided with an opening penetrating the connecting wall, a connecting tube, one end of the connecting tube being inserted into the tubular part of the adapter and abutting against the diverter, wherein the connecting tube abuts against at least one of the end part of the connecting wall of the diverter that is away from the end wall and the stepped part of the diverter,
• further comprising a connecting tube, one end of the connecting tube being inserted into the tubular part of the adapter and abutting against the diverter, and
• wherein the diverter is clamped between the connecting tube and the stepped part of the adapter.