RU2756420C1 - Two-way linear spring-piston compressor - Google Patents

Abstract

FIELD: refrigeration technology.SUBSTANCE: invention relates to a device for compressing vapors and gases and can be used in refrigeration technology. The effect is achieved by the fact that in a double-sided linear spring-piston compressor containing a linear drive, a piston cylinder, a piston cylinder head, a piston driven by a linear drive, with the possibility of reciprocating movement of the piston inside the piston cylinder along the axis, the springs according to the invention, the springs have a trapezoidal section of the coil and are return springs-pistons installed inside the piston cylinder between the heads of the piston cylinder and the piston, while the piston is made in the form of a cylinder with truncated cones at the ends.EFFECT: lightweight and compact compressor with high efficiency development.1 cl, 1 dwg

Description

The invention relates to a device for compressing vapors and gases and can be used in refrigeration technology.

Known linear compressor having a piston rod with a pre-compressed spring, and a refrigeration apparatus (RF patent No. 2451209, F04B 35/04, 2007), containing a piston housing and moving along the axis of the reciprocating compressor piston. The compressor piston is connected via a rod to the drive for reciprocating motion. The rod contains a pre-compressed spring, preferably a coil spring, the pre-compression of the spring being greater than the tension produced by the actuator in the rod.

The closest in terms of essential features of the claimed invention is a linear compressor with a coaxial piston arrangement (US patent No. with the possibility of reciprocating movement inside the first cylinder, the second piston located with the possibility of reciprocating movement inside the second cylinder, a compression chamber.

In the devices described above, the springs are auxiliary elements and provide the return of the piston to its original position (do not take part in the compression process). Disadvantages of these solutions:

- low efficiency;

- large dimensions of compressor equipment.

The objective of the invention is to develop a lightweight and small-sized compressor with high efficiency.

The problem is solved by the fact that in a double-sided linear spring-piston compressor containing a linear drive, a piston cylinder, a piston cylinder head, a piston driven by a linear drive, with the possibility of reciprocating movement of the piston inside the piston cylinder along the axis, the springs according to the invention , the springs have a trapezoidal section of the coil and are return springs-pistons installed inside the piston cylinder between the heads of the piston cylinder and the piston, while the piston is made in the form of a cylinder with truncated cones at the ends.

In this case, when compressed, the spring will participate in the process of compressing the medium. This design makes it possible to significantly simplify the design of the compressor. The absence of rotating masses and a decrease in the number of friction pairs can significantly increase the mechanical efficiency and reduce the overall and weight characteristics. The trapezoidal section of the coil prevents the piston from jamming when the spring is released.

The essence of the invention is illustrated by a drawing (Fig. 1), where:

1 - piston;

2 - spring-piston;

3 - piston cylinder;

4, 6 - linear drive;

5 - the head of the piston cylinder.

The compressor works as follows. Voltage is applied to the winding of the linear actuator 4 or 6. On the outside of the body (piston cylinder), electromagnetic coils are installed, alternately creating a magnetic field, under the influence of which the piston moves. Under the influence of the magnetic field, the piston 1 moves to the extreme position, compressing the spring-piston 2, which participates in the process of gas compression. The piston is made in the form of a cylinder with truncated cones at the ends. The springs-pistons with a trapezoidal section of the coil, when fully compressed, form a cylinder with a bore in the form of a truncated cone. When compressed, the piston fills this frusto-conical hole. The piston cylinder has heads installed at the ends, in which valves for the inlet and outlet of the working gas are installed. After the compressed gas is discharged through the valves, the voltage from the winding is removed and applied to the other winding, as a result of which the piston begins to move in the opposite direction. After the compressed gas has been discharged through the valve system, the voltage is removed from the winding and the process is repeated.

The piston is partially or completely made of magnetic material. The shape of the piston allows the spring to be fully compressed and prevents the piston and spring from jamming during operation. The compressor differs from the available ones in that the return mechanism (spring) is also involved in the gas compression process. Continuous regulation of the compression pressure can be carried out by regulating the current on the windings that retract the piston. The springs are made of non-magnetic material and are not affected by the magnetic field of the coils.

Claims (1)

A two-way linear spring-piston compressor containing a linear actuator, a piston cylinder, a piston cylinder head, a piston driven by a linear actuator, with the possibility of reciprocating movement of the piston inside the piston cylinder along the axis, a spring, characterized in that the springs have a trapezoidal coil section and are return springs-pistons installed inside the piston cylinder between the heads of the piston cylinder and the piston, while the piston is made in the form of a cylinder with truncated cones at the ends.

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