Frequency converter casing having high efficiency heat dissipation performance and high sealing performance

The utility model relates to a frequency converter casing having a high efficiency heat dissipation performance and a high sealing performance. The utility model is characterized in that a ring of sealing rubber strip is embedded in an upper edge of a housing; the housing and a cover are connected together by two pluggable hinges and two lock catches; two sides of the housing are respectively provided with an input copper bar and an output copper bar, which are connected with a frequency converter circuit in the housing; an aluminum heat dissipation device is disposed on a center of a bottom part of an inner side of the housing, and is provided with a heating element; one side of the aluminum heat dissipation device is provided with a large air quantity axial flow fan; a fan cover plate is disposed above a space between the large air quantity axial flow fan and the aluminum heat dissipation device; a side of the housing side wall with respect to the large air quantity axial flow fan is provided with an air ch