SU1300193A1 - Profile of rotor of twin-rotor compressor - Google Patents

Abstract

The invention relates to the field of compressor engineering and makes it possible to simplify the manufacturing technology. The heads of the rotor profile are formed by two mutually conjugate identical lines 2, described by the equations X (2g sin4 + a cos 24) - (cos VP + b-sin) -ab 1 (sin 24-b cos 2Ч) / ( 1 + b); Y (2r sin 24) - (cos4 + bsin4) -abl (cos24 + b sin 24) / (l + b), where r is the radius of the initial circle of the rotor, ab is the parameters of the straight line, and f is the angle. This allows the heads of the I profile to be performed using the rolling-in method with the straight-line profile of the cutting tool and thereby simplifying the manufacturing technology. 1 il. oo with

Description

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The invention relates to compressor building and concerns the rotor profile of a two-rotor compressor.

The purpose of the invention is to simplify the manufacturing technology.

The drawing shows the profile of the rotor of a two-rotor compressor.

The rotor profile of a two-rotor compressor contains heads 1, formed by two identical lines 2 adjoining each other, and cavities 3, made in the form of arcs of circles, conjugated to curves 2 lines straight lines 4. Each curve 2 lines 1 is described by equations

X (2rsin a cos 2 H) I (2§iflb sinlf) rab (.2if-baos2v); i. + b Y (2r cos a sin 240. E (sinifbab (g2 f-bbsin24), l + b

where r is the radius of the initial circle

rotor;

a, b — straight line parameters: Ф — angle.

In this case, each straight line 4 is tangent to the extended epicycloid 5 of the initial circle of radius r, which is listed at the top 6 of the head of the return rotor 7 when running in, and the curve of line 2 is rounding

Editor M.Petrova

Compiled by A. Lipatov Tehred L. Serdyukova

Korrek Signature

1133/34 Circulation 575

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

O 5

0

five

0

932

The family of straight lines 8 of the profile of the counter rotor 7 when running in for any rotor positions defined by the angle Lf, which allows the heads of the 1 profile to be completed by running in a straight line profile of the cutting tool and thereby simplify the manufacturing technology.

Formula of invention

The rotor profile of a two-rotor compressor, which contains heads, formed by two identical curves that are conjugated to each other, and depressions made in the form of arcs of circles that are conjugated to straight lines of the curves of the microns, are characterized by in order to simplify the manufacturing technology, each curve of the head is described by the equations:

X (2g sin4 + a cos 2v) -

r (cos4M-b sinf) -ab, - „,“, “.ch .1. (sin24 -b-cos24);

Y (2r cos a-sin 2) - r (cos4 + b sin4) -ab

l + b2

(cos24 + b sin2f).

where r is the radius of the initial circle

profile;

a, b — straight line parameters; h - angle.

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Claims (1)

Claim The rotor profile of a two-rotor compressor, containing heads formed by two identical curved lines paired with each other, and troughs made in the form of circular arcs conjugated with curved lines of heads by straight lines, is distinguished by the fact that, in order to simplify the technology manufacturing, each curved line of the head is described by the equations: X = (2r sin'H "+ a cos 2φ) (sin24-b- cos2 C>); Y = (2r cos 4 - a · sin 24) In this case, each straight line 4 is tangent to an elongated epicycloid 5 of the initial circle of radius r, which is described by the top 6 of the head of the reciprocal rotor 7 during run-in, and the curve line 2 - I envelope r (cos4 + b sin4) -ab, JU ---------------- (cos24 + b sin24), 1 + b ⁱ where r is the radius of the initial circumference of the profile; a, b - parameters of a straight line; ¹ 4 - angle.