Heat dissipation assembly

A heat dissipation assembly, comprising:

• a case, comprising a chamber;
• and
• a partition structure, comprising a partition wall vertically disposed in the chamber to separate a first flow path and a second flow path in the chamber, the partition wall comprising a breach and a valve structure disposed at the breach, wherein
• the valve structure covers the breach when the valve structure is not pushed open, and
• when a fluid pressure existed in a section of one of the first flow path and the second flow path which is adjacent to the valve structure is greater than a fluid pressure existed in a section of the other one of the first flow path and the second flow path which is adjacent to the valve structure, the valve structure is pushed away to expose at least a part of the breach,
• wherein the valve structure comprises two valve plates, and when the valve structure is pushed away, one of the two valve plates is opened and stretches into the first flow path or the second flow path.