SU369352A1 - REFRIGERATING GAS MACHINE12 - Google Patents

Description

Lime chiller-gas machines operating on the reverse Stirling cycle, containing piston compressors and expander.

The purpose of the invention is to cool the object away from the machine and reduce its vibrations. This is achieved by the fact that, in the proposed machine, the expander piston is made in the form of an independently mounted spool, the working and drainage of which is connected by means of pipelines, for example flexible, to the compressor cavities to displace the spool and expand the compressed gas.

FIG. 1 shows the principle of the described machine; in fig. 2 - diagram of the operating cycle of the machine.

The machine contains a piston compressor (i) and a dilator 2. Inside cylinders 3 and 4 there are pistons 5 and 6 of compressor (1) which are driven by connecting rods 7 and 8. The connecting rod / piston group is connected to electric motor 9 through coupling 10, cranks 1} and 12, and crankshaft 13. Expander 2 includes a cylinder 14, inside of which piston-spool 15 is moved with an integrated regenerator 16. Cylinder 14 with a cooled object 17 is closed with a vacuum cap IS. The working cavities 19 and 20 of the piston -gill 15 are connected by pipeline .2 / with cylinder 4

and channel 22 through line 23 and cooler 24 with cylinder 3 of compressor J. The cylinder cavities are charged with working gas from cylinder 25 through reducer 26 and check valve 27.

The duty cycle of the machine is carried out in a single revolution of the crankshaft.

With simultaneous rotation of cranks P and 12, displaced by an angle f (see Fig. 2), pistons 6 and 5 are driven through connecting rods 5 II 7. Piston 5 compresses gas, heat is compressed by discharge, for example, with water in a refrigerator 24. The piston in compresses the gas adiabatically in the cavity 20 and, creating pressure in it more than in the cavity 19, holds the piston-spool 15 in the upper position.

As the piston moves down, the gas pressure in cavity 20 decreases. The piston 5 moves upward, the gas from the cavity of the cylinder 3 of the compressor through the refrigerator 24 and the regenerator 16 is displaced into the low-temperature cavity 19 expansion: itel, while moving the piston-spool 15 down.

When gas is dissipated in the cavity 19, heat is absorbed from the object 17. Next, the piston 5 moves downward, the gas moves from the cavity 19 into the compression cavity of the cylinder 3.

When the piston 6 moves upwards, the compressible gas moves the piston-spool IS to its highest position and the cycle repeats.

Subject invention

A cool-gas – gas machine operating on a reverse Stirling cycle contains a piston compressor and expander, characterized in that, in order to cool an object that is remote from the machine and reduce it

vibrations, the expander piston is made in the form of an autonomously mounted spool, the working cavities of which are connected by pipelines, for example flexible, to the compressor cavities for moving the spool and expanding the gas compressed in the compressor.

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