SU1346853A1 - Screw compressor - Google Patents

Abstract

The invention allows to simplify the design of the screw compressor. The radial holes of the rotors 5 are located in the suction chamber 3 between the teeth. The tides of the trunnions 7 are made between the protrusions from the engagement side with the possibility of completely blocking the radial holes. Axial bores 13 of trunnions 7 serve to communicate axial clearance with channel 10, which communicates part of cavity 6 of rotor 5 with pressure chamber 4. The axial and radial loads arising from the compressor operation are compensated for by the interaction of the compressed gas supplied through the channel 10 with the trunnions 7 and the rotors 5. 3 Il. - b 1 (L with Nj: O5 CX) SP 00 Phys. 1

Description

The invention relates to compressor building and concerns screw compressors. ;

The purpose of the invention is to simplify the design.

FIG. 1 shows a screw compressor, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

The screw compressor includes a housing 1 with a working chamber 2 and hollow gear rotors 5 installed in it with the formation of chambers 3 and A of suction and injection, each cavity of which is located on the suction chamber 3 side with axial clearance fixed on the housing 1 of trunnion 7 with face collet 8 and axially diametrically located protrusions 9 in an inclined plane; in each axle 7 a channel 1 ь is formed to communicate part of the cavity 6 of the rotor 5 from the engagement side with the injection chamber 4. The rotors 5 are provided with radial holes 11 located in the suction chamber 3 between the teeth, and pins 7 with tides 12, made from the engagement side with

the possibility of complete overlapping by radial Q in the suction chamber between the teeth of the apertures 11 and axial bores, and the trunnions with tides, of performance 13 for communicating the axial clearance with the channel 10.

Screw compressor works as follows.

The rotating rotors 5 capture the gas from the suction chamber 3, compress

35

between the protrusions from the engagement side with the possibility of complete overlap of the radial holes, and axial holes for communication of the axial clearance with the channel.

it in the working chamber 2 measure 4 injections.

and served in ka

The resulting axial and radial loads are compensated for by the interaction of the compressed gas supplied through the channel 10 with the trunnions 7 and the rotors 5.

Claims (1)

Invention Formula A screw compressor comprising a housing with a working chamber and gear rotors installed therein to form suction and discharge chambers, in the cavity of each of which, from the suction chamber side, there is an axial clearance fixed to the axle housing with an axial flange and axial diameters in the inclined plane protrusions and in each pin there is a channel for communication of the part of the rotor cavity from the engagement side with the pressure chamber, characterized in that, in order to simplify the design, the rotors are equipped with nymi apertures located in the chamber Q GOVERNMENTAL suction me.zhdu teeth - E and the trunnion - tides vypolnenny- 35 between the protrusions from the engagement side with the possibility of complete overlap of the radial holes, and axial holes for communication of the axial clearance with the channel. Aa -at Fig.Z Compiled by A.Lipatov Editor A.Vorovich Tehred A.Kravchuk Order 5108/35 Circulation 570 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Proofreader I. Muska