Counter-rotating cooling fan and cooling device

Abstract

The utility model provides a kind of counter-rotating cooling fan and cooling device, the cooling fan includes: first fan and second fan, first fan and second fan butt joint installation along its axis, and the air outlet of first fan is connected with the air inlet of second fan corresponding connection.Sealing ring is set in the fan casing inner wall of first fan and second fan, and sealing ring and fan blade in first fan and second fan form dynamic sealing structure.First fan and second fan reverse rotation.The cooling fan is provided with two fans, and the two fans rotate reversely, realizing the transfer of air flow, and improving the air flow velocity of air outlet.In addition, sealing structure is provided between the fan blade and the fan casing, which can prevent air flow from flowing back, improve the pressure in the fan and improve the air supply efficiency.Meanwhile, the cooling device provided with the cooling fan can quickly realize air overcooling and improve the cooling efficiency.

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