SU419639A1 - VENTILATION DIFFUSER OF CENTRIFUGAL COMPRESSOR - Google Patents

Description

one

The invention relates to the field of compressor engineering.

Known spatula diffusers of centrifugal compressors with parallel walls and shortened in height blades, profiled in a logarithmic spiral.

The proposed diffuser differs from the known ones in that the blades are placed in alternating order either on one wall or another with a shift of adjacent blades by / 2 steps, and the height and thickness of the blades are constant along the entire length and equal, respectively, 0.1- 0.2 and 0.08-0.15 height of the diffuser through passage.

Such an embodiment of the diffuser allows to increase the compressor efficiency and ensure stable operation in subsonic modes.

The drawing shows schematically the described diffuser, a view of the vanes from the flow inlet side, where the vanes located on the

opposite the wall of the diffuser, and the cross section along the AA.

The height III and the thickness of the 5 blades are constant along the entire length and equal, respectively, 0.1-0.2 and 0.08-0.15 of the height h of the diffuser cross-section.

Subject invention

A rotary diffuser of a centrifugal compressor with parallel walls and shortened in height blades profiled along a logarithmic spiral, characterized in that, in order to increase

and ensure stable operation under subsonic modes, the blades are placed in alternating order either on one wall or another with a shift of adjacent blades by / 2 steps, and the height and thickness of the blades are constant along the entire length and equal, respectively , 0.1-0.2 N, 0.08-0.15, the height of the diffuser through passage.