SU1645631A1 - Sliding-vane rotary compressor - Google Patents

Abstract

The invention relates to compressor engineering and allows to simplify the manufacturing technology, increase efficiency, increase reliability of operation, and reduce the time to reach the rotary plate compressor mode. The end covers 3 of the housing 1 have internal profiled surfaces. In the cylindrical bore 4 of the housing 1 concentric on the shaft 5 mounted rotor with radial grooves. Separate plates 10 are installed in pairs in the slots with the possibility of axial movement and formation with profiled surfaces of the working chambers. In the shaft 5 there is a blind channel (K) 13 for supplying lubricating fluid and K 14 bypass. In the rotor 6 K 15 are made, coaxial K 14. In the zone of each groove 7, a recess 16 is made, K 15, 14 communicating with K 13. The plates 10 are rectangular and installed in a groove in pairs in the same plane. At least one of each pair of plates 10 has on its end surface a one-sided chamfer located on the inner side. The distance between the profiled surfaces exceeds the sum of the lengths of both plates 10. 5 Cp f-ly, 7 ill. sl C

Description

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The invention relates to the field of compressor engineering and can be used as compressors of refrigerating machines and other engineering objects.

The aim of the invention is to simplify the manufacturing technology by allowing the gaps formed by the parts to be sealed at high manufacturing tolerances, increasing efficiency by reducing working leakage losses, improving reliability by ensuring even wear of the separation plates, reducing the time to reach the mode when start-up of the compressor by creating a preliminary pressing of the separation plates to the inner surfaces of the end caps.

1 shows a longitudinal section of a compressor; figure 2 is a section bb In figure 1; fig. 3 is a separator plate; figure 4 - section aa on fig.Z; figure 5 - section on fig.Z; figure 6 is a pair of separation plates with expanding element; figure 7 - scan of the rotor and the profiled surfaces of the end caps.

The rotary-plate compressor includes a housing 1 with a stator ring 2, end caps 3 having internal profiled surfaces in the form of evenly alternating projections and depressions having flat portions mated with protrusions and depressions, and the internal surfaces of both end caps 3 are equidistant. In the cylindrical bore 4 of the housing 1 on the shaft 5 there is a concentric rotor 6 with radial grooves 7, in which with the possibility of axial movement and formation of the working chambers 8 and 9, the inner surfaces of the end caps 3 are installed in pairs in one plane separating plates 10, At least one of each pair of separation plates 10 has on its end surface a one-sided chamfer 11 located on the inner side of the rotor 6. There are depicted separation plates 10 with chamfers on each of the separation plates 10 from the inside. The distance between the inner profiled surfaces of the end caps 3 exceeds the sum of the lengths of the two separation plates 10. To prevent leakage of the working medium, seals 12 are installed. Shaft 5 has a deaf axial channel 13 for supplying lubricating fluid and overflow channels 14, the rotor 6 is made channels 15 coaxial with the bypass channels 14 of the shaft 5, and in the zone of each radial groove 7 of the rotor 6, a recess 16 is made communicated by channels 15 of the rotor 6 and the bypass channels 14 of the shaft 5 with the axial channel 13 of the shaft 5. Each separator On the side plate 10, the end surface on the shaft 5 side is made concave, and on the side of the stator ring 2 of the housing 1 and the end caps 3, convex, and the radius of curvature of the concave and convex portions of the separation plate

0 10 from the side of the housing 1 and the shaft 5, respectively, equal to the radius of the shaft 5 and the cylindrical bore 4 of the housing 1. The convex end surface of each of the separation plates 10 from the inner

The 5 profiled surfaces of the end caps 3 are made along a radius equal to the average conjugate radius of the inner profiled surfaces.

When the compressor is designed to reduce the time to reach the mode when it starts up, each dividing plate 10 has a shaped through cutout 17, for example, rectangular or in the form of a segment, with

5 sides facing each other, and the expanding element 18, made, for example, in the form of a flat spring, is placed in the notches 17 between the spacer plates 10. The flow of the working medium takes place through the channel 19, the outlet through the channel 20, the capacity 21 for a lubricating fluid, such as oil, and is connected by a manifold 22 to an axial channel 13 of the shaft 5. In case 1, an exhaust

5 channel 23.

Rotational plate compressor operates as follows.

At the initial time, the lubricant under the action of centrifugal forces from rotation of the rotors is supplied through the manifold 22, the axial channel 13, the bypass channels 14, the channels 15, the annular recess 16 into the gap between the chamfers 11 of the separation plates 10, resulting in

5, the separation plates 10 move apart and, when the rotor 6 rotates, slides along the inner profiled surfaces of the end caps 3, as well as along the cylindrical bore 4 of the body 1 and the surface.

0 of the shaft 5. In this case, the volumes of the working chambers 8 and 9 change and the process of moving the working medium from the inlet channel 19 to the outlet channel 20 occurs.

Further lubricating fluid

5 through a manifold 22 is supplied under a discharge pressure, which allows the compressor to go to a steady state.

When installing the expansion element 18 in the cut-out 17 between the spacer plates 10, the latter are pressed against the inner profiled surfaces of the end caps 3, which makes it possible to reduce the time to reach the mode when the compressor starts.

Claims (5)

Claim 1. Rotary-lamellar compressor, comprising a housing with end caps having internal profiled surfaces, in a cylindrical bore of which a rotor with radial grooves is mounted concentrically on the shaft, with axial displacement and formation with internal profiled toroidal surfaces Separating plates, and channels for supplying and discharging the working medium, characterized in that, in order to simplify the manufacturing technology and efficiency, the shaft has a blind axial channel for supplying lubricating fluid and bypass channels, channels rotated with the shaft bypass channels are made in the rotor, and in the zone of each rotor groove there is a notch connected to the shaft through the axial channel of the shaft and the plates are rectangular and installed in a groove in pairs in one plane, with at least one of each pair of plates having on the end surface The one-sided chamfer is located on the inner side, and the distance between the inner profiled surfaces of the end caps exceeds the sum of the lengths for both plates. 2. Compressor pop. 1, characterized by the fact that. in order to increase reliability and increase efficiency, each plate is concave on the shaft side and convex on the housing side and covers, while the radii of curvature of the concave and convex plate sections on the housing side and shaft are respectively equal to the curvature radius of the shaft and cylindrical case bore . 3. Compressor pop. 1, characterized in that, in order to reduce the time to reach the mode, the compressor is provided with an expanding element, and each plate has a shaped through cutout from the ends facing each other, while the expanding element is placed in the cutouts between the plates. 4. The compressor according to Clause 3, characterized in that the profiled cut-out in the plate is rectangular, 5. The compressor according to Clause 3, characterized in that the profiled cut-out in the plate is made as a segment. 6 Compressor according to Clause 3, characterized in that the expanding element is designed as a flat spring. FIG. 2 Yu / BUT ;; V. / 7 Yu I / j BUT Figz Aa 5-6 Yu / Yu Fig 5 JU8 Ii FIG. b FIG. 7