Hot air circulation bellows and hot air circulation method

Abstract

The present invention provides a hot air circulation bellows and a circulation method, comprising an upper bellows and a lower bellows, wherein the inner cavity of the upper bellows is provided with a transverse plate and a partition plate, the upper bellows is connected to an air inlet side interface and a return air side interface, a bellows inner shell is provided in the lower shell, an air inlet pipe is provided at the top of the bellows inner shell, an air inlet port and a return air port are provided on the transverse plate, the upper end of the air inlet pipe is sleeved in the air inlet port, an air outlet is provided at the bottom of the bellows inner shell, and return air holes are provided on the top and bottom walls of the bellows inner shell. After the hot air is discharged from the return air holes of the bellows inner shell, it flows back into the return air chamber through the return air channel and the return air port. By reducing the path of the hot air return of the bellows, increasing the air flow area of ​​the hot air return of the bellows, and evenly arranging the positions of the return air ports of the bellows, it helps to reduce the wind pressure of the return air and reduce the fan power required for the hot air flow, so that the bellows air inlet fan is replaced from an 18.5KW high-pressure fan to a 15KW medium-pressure fan, thereby reducing energy consumption.

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