RU2018712C1 - Rotary machine - Google Patents

Abstract

FIELD: energy converters. SUBSTANCE: rotor with pistons is mounted in cylindrical housing provided with working medium inlet and outlet passages fitted with check valves. Rotor forms circular working chamber. Spring-loaded separating plates are mounted in radial slots of housing in between passages for reciprocating and engagement with cam. Piston has some rectangular slots on the side opposite to the sense of rotation. EFFECT: enhanced reliability. 6 dwg

Description

 The invention relates to mechanical engineering and can be used in various machines - energy converters.

 Known rotary machine containing a cylindrical body, a rotor with pistons located in the annular working chamber, as well as movable shutters installed in the annular working chamber. The inlet and outlet channels for the working medium are made in the machine body. The rotor pistons in their movement together with the movable dampers form chambers of variable volume in the annular working chamber, with a high pressure chamber (compression chamber) located in front of the piston and a low pressure chamber (suction chamber) behind.

 The disadvantages of this machine and all machines with rotating pistons (Beck system machines) include low reliability and performance due to the risk of piston jamming in the annular working chamber due to its thermal expansion. The increase in mounting clearances between the piston and the walls of the cylindrical body by the value of thermal expansion increases the proportion of leakage from the high chamber to the low pressure chamber, which negatively affects the performance of the machine.

 As a prototype of the selected device, which is more advanced than the analog due to the optimal design of the profiles of the moving elements.

 However, this device has low reliability and performance.

 The aim of the invention is to increase the reliability and performance of the machine due to changes in the design of the piston.

 The invention consists in the following.

 When the rotary machine is in the energy consumer mode, the heat flux is directed from the front surface of the piston to the rear, which has a lower temperature. The heat transfer efficiency of the piston rear surface is directly proportional to the effective surface of the piston rear wall. To increase the efficiency of the heat exchange surface of the piston according to the invention, slots are made from the rear surface of the piston.

 The implementation of the rear surface of the piston of a rotary machine in the form of a tread is a significant difference between the proposed technical solutions from the known and meets all the necessary criteria for the recognition of the proposed solution by the invention.

 In FIG. 1 shows a general view of a rotary machine; figure 2 is a section aa in figure 1; figure 3 - shaft of a rotary machine, a rotor with pistons, as well as profiled disks with negative cams, made in a perspective view; figure 4 - rotor with pistons; figure 5 is a section bB in figure 4; figure 6 - section bb in figure 4.

 The rotary machine comprises a cylindrical body 1, rigidly fastened to the sleeve body 2 with the formation of annular working chambers 3, in which the pistons 4 of the rotor 5 are located, rigidly fastened to the shaft 6, to which the profiled disks 7 with negative cams 8 mounted with the possibility of impact are rigidly attached on spring-loaded pushers 9 mounted in guides 10 of sleeves 2. Covers 11 with tides 12 are rigidly attached to the sleeves, in which bearings 13 are mounted, pressed by hatches 14. Entrance 15 and out channels are made into the machine body Ode 16 working environment. In the channels 16 of the output contains check valves 17. In the pistons 4 are made slots in the form of protectors 18.

 Rotary machine operates as follows.

 When rotating the shaft 6, as well as the rotor 5 with pistons 4 and shaped disks 7 with negative cams 8 with the same angular velocity, the cams 8 act on spring-loaded pushers 9, the heads of which serve as movable dampers.

 When the pistons 4 move in the annular working chamber 3 using the heads of the pushers 9, the working medium is sucked through the inlet channels 15, and the compressed working medium is displaced through the outlet channels 16 and the check valve 17 into the high pressure chamber (receiver).

 With the passage of the piston 4 above the head of the pusher 9, the latter “falls” into the profile of the negative cam 8 under the action of the spring of the pusher 9, freeing the free passage of the piston 4 in the annular working chamber 3.

 The implementation of the piston with slots in the form of a tread on the side of the suction chamber provides a more efficient process of heat removal from the piston. This circumstance makes it possible to reduce the mounting clearances between the piston and the walls of the machine body, which positively affects the performance of the machine by reducing the proportion of overflows from the high chamber to the low pressure chamber, and also improves the reliability of the rotary machine.

Claims (1)

 A ROTOR MACHINE, comprising a cylindrical body with input and output channels of the working medium with check valves installed in the latter, a rotor with pistons placed in it to form an annular working chamber, a profiled guide cam and spring-loaded dividing plates installed in the radial grooves of the housing between the channels with the possibility of return - translational movement and interaction with the cam, characterized in that, in order to increase reliability in work and increase productivity by increasing In order to increase the efficiency of heat removal, a number of rectangular slots are made in the piston from the side opposite to the direction of rotation.

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