SU756083A1 - Vortex-type machine impeller - Google Patents

Description

The invention relates to the field of turbomachinery, in particular for vortex machines.

Known vortex impeller $ auth.St. No. 578497, containing a rotor with peripheral rims of blades installed with a slope in the direction of rotation to the radius of the wheel and at an angle to its axis, and the angle between the blade and the radius is 30-40 °, and between the blade and the wheel axis 5-15 ° £ ]. ·

The disadvantage of the known wheels are relatively low values of pressure and efficiency.

The purpose of the invention is to increase the pressure and efficiency.

This goal is achieved by the fact that the back side of each blade 20 is inclined relative to the front at an angle of 10–20 °, the bases of the blades are made along the radii of 0.4–0.9 from the back and from the front 0.2 -0.4 from the pitch of the lob is 25 patches on the outer diameter, the thickness of the peripheral edges of the blades is 0.02-0.05 from the pitch, and the internal forming of each interscapular channel in the meridional section

2

The radius is 0, "- 0.9 of the wheel width.

FIG. 1 shows a wheel in the meridional projection with a partial section along the interscapular channel; in fig. 2 is a view A of FIG. 1 ', FIG. 3 — section of the wheel by a plane perpendicular to the back and front sides of the blades; Fig.4 "scan wheel on the outside diameter.

The wheel contains a rotor 1 with a peripheral rim of blades 2 with an inclination in the direction of rotation to the radius 8 of the wheel at an angle (3 = 30-40 ° and at an angle оС = 5-15 ° to the wheel axis. The back side 3 of each blade 2 is inclined relative to the front -> Rona 4 at an angle ^ = 10-20 °. The bases of the blades 2 are made along the radii that make up 8 = 0.4-0.9 on the back side and 8 = 0.2-0.4 on the front side from the blade pitch ι 2 on the outer diameter. The thickness of the peripheral edges of the blades is equal to (ί = 0 ·, 020.05 from the pitch, ι.

Inner generator 5 each

interscapular canal 6 is delineated

radius of Ke, comprising 0.5-0.9

from шири wheel width.

3

756083

four

The working fluid enters the blade 2 of the wheel and passes the interscapular channel 6 with minimal losses due to the small thickness of the output edge, the radius of the bases of the blades and the internal generatrix. channel and tilt the back side to the front.

The choice of these values in the optimal range provides the optimal perimeter and volume of the interscapular canal, the reduction of end and vortex losses and, as a result, the increase in head and efficiency.

As tests have shown, the pressure and efficiency are increased by 20-30% compared with the basic invention.

Claims (1)

Claim The driving wheel of the vortex car, on avt.sv. № 578497, about tl and h a go10 15 right in order to increase head and efficiency, the back side of each blade is tilted relative to the front at an angle of 10-20 ° of the base of the blades made along the radii from the back side 0.4-0.9 and from the front 0.2-0.4 from the blade pitch on the outer diameter, the thickness of the peripheral edges of the blades on the outer diameter, the thickness of the peripheral edges of the blades is 0.02-0.05 from the pitch, and the inner generatrix of each interblade channel in the meridian section is outlined with a radius, constituting 0.5-0.9 of the wheel width.