SU898105A2 - Rotor machine-displacement machine - Google Patents

Description

I

The invention relates to mechanical engineering.

According to the main auth. No. 5113160 is known for a rotary volumetric machine, preferably a compressor, comprising a housing and located in it, translucent rotors, one of which has teeth on the teeth x and protrusions, and the other response channels p,

In the known rotary machine, during the period of mating of the tooth and the cavity of the driving and driven rotors, the possibility of their axial displacement is not excluded, for example, when the thrust bearing fails, which reduces the reliability of the machine. In addition, the injection window has a limited area, which is determined by the shape of the bottom of the driven rotor and the degree of compression. At the end of the injection, the window area decreases faster than the volume of the working cavity decreases, which leads to a sharp increase in pressure and forced gas and a decrease in the efficiency of the machine.

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

This goal is achieved by the fact that parts of the driven rotor located in the channel zone are offset from the edge of the teeth in the direction of rotation by an amount exceeding the lateral gap between the rotors j and the protrusion and

10 parts located in their zone, the teeth of the driving rotor are shifted in the same direction by the corresponding value.

IS

FIG. 1 shows the rotors of the volumetric machine; in fig. 2 - coupling of the rotors at the time of the passage of the tooth of the driving rotor of the bottom of the slave; in fig. 3 - device, transverse

Claims (2)

20 - (the rotors of the machine are at the moment gas starts to be injected); in FIG. 4 is the same in the injection stroke. The rotor machine contains a housing (not shown) and located in it the spur-shaped rotors: the driven rotor 1 and the leading 2. The teeth x 3 of the leading rotor 2 have protrusions of the protrusions 4, —a tooth x 5 of the driven rotor -1 — response channels 6. On the driven rotor 1 there are depressions 7 separated from the channels on one side by sections 8 of the body of the teeth 5, Parts of the driven rotor I, located in the zone of the channels 6, are displaced from the edge 9 of the teeth 5 in the direction of rotation by an amount exceeding the side clearance between the rotors 1 and 2, and the projections 4 and the parts 10 of the teeth 3 of the leading rotor 2 located in their zone are displaced in the same direction appropriate value. When the middle parts are displaced, the depressions 7 are formed, the ends of the P sections 8 are teeth 5 and the ends 12 are in the middle of the teeth 5. On the surface of the tooth 5 of the driven rotor 1 is a dash-dotted line that shows the contour of the injection window 13 occupies position 15 with the same degree of compression). At the end of the compression process, after the gas has been displaced from the middle part of the depression 7, the gas from the rest is forced out through the window area 16 (shaded area). When the rotary mapina is in operation, when the tooth 3 of the leading rotor 2 is in the horizontal plane, the axial displacement of the rotors is prevented by the interaction of the terminating channel 6 and the protrusion 4, as well as the ends 11 and 12 with the teeth 3, i.e. the channels and valleys did not complete the mating, and the teeth and valleys had already entered the mating with their ends. Upon further rotation, the axial displacement of the rotors is prevented by the interaction of the terminating ends 11 and the next pair of channels and protrusions 4 that have already been mated. Thus, the rotors are continuously fixed in the axial direction. When the depression 7 approaches the edge 14 of the injection port 13, the injection process begins. Since the middle parts of the rotors are displaced in the direction of rotation, the discharge pressure is reached in the working cavity with a smaller angle of rotation of the rotors. The edge 14 of the window 13 will take a position 15 displaced against the rotation of the driven rotor 1. At the same time, the area of the window increases and the hydraulic losses decrease. At the end of the compression process, the expulsion of the remaining gas is carried out first from the middle part of the depression 7, and then through the remaining area of the window 16 from the remaining end sections, which also reduces the hydraulic losses. The magnitude of the displacement of the parts of the rotors can be carried out only within certain limits. This value should be greater than the lateral clearance between the rotors, since only in this case interaction is possible in the axial direction in the region of the teeth and hollow. Thus, the displacement of parts of the driven rotor located in the zone of channels and protrusions located in their zone of the teeth of the driving rotor allows to increase the reliability and efficiency of the machine. The invention of the Roth's volume mapin on the author. St. No. 5113160, characterized in that, in order to increase reliability and efficiency, parts of the driven rotor located in the channel zone are offset from the edge of the teeth in the direction of rotation by an amount exceeding the lateral clearance between the rotors, and the protrusions and parts of the teeth located in their zone leading rotor is shifted in the same direction by the appropriate amount. Sources of information taken into account in the examination 1. USSR author's certificate №513160, cl. F 01 C 1/08, 1973.