Linear compressor and refrigeration equipment having same

Abstract

The invention provides a linear compressor and a refrigeration device with the linear compressor. The linear compressor comprises a first cylinder and a second cylinder which are arranged on the two sides inside a shell, and a first piston and a second piston corresponding to the first cylinder and the second cylinder, wherein the first piston and the second piston are fixedly connected through connecting pieces; the first piston, the second piston and the connecting pieces have hollow parts which communicate with one another inside; a linear motor enables the first piston and the second piston to perform reciprocating motion; compressed air is generated in a compression chamber; an elastic part provides elastic restoring force for the first piston and the second piston; and to-be-compressed air entering from air inlets formed in the connecting pieces is alternately compressed and discharged. According to the linear compressor, to-be-compressed air enters the compression chamber from the connecting pieces between the two pistons of the linear compressor, so that suction overheating can be reduced, and the volumetric efficiency of the compressor is improved; and the stroke is small, the service life of the two pistons is long, and the reliability is improved. The invention further provides the refrigeration device with the linear compressor.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a linear compressor and refrigeration equipment with the same. Background technique [0002] At present, reciprocating compressors all have a part similar to a crankshaft, which is used to convert the rotational torque of the motor into the driving force for the reciprocating motion of the piston. This motion conversion results in high mechanical friction losses in the compressor. To solve this problem, linear compressors have been developed in the industry in recent years. The linear compressor cancels the crankshaft of the reciprocating compressor, and the piston is directly driven by the linear motor to reciprocate in the cylinder to complete the work of compressing the refrigerant. Due to the reduction of parts and components, the structure of the whole machine becomes simpler, which not only improves the compression efficiency, but also reduces the noise when the compressor is r...

AI Technical Summary

Problems solved by technology

Although this structure can reduce the stroke of the piston, since the motor is fixed around the cylinder, high-pressure gas is discharged from between the two cylinders, and a lot of heat will be transferred to the motor by heat conduction, resulting in a decrease in the efficiency of the motor.

At the same time, the high-pressure gas passes through the connecting rod inside the piston, so that the piston is not only subjected to the load of the gas force, but also bears the high-temperature heat load when it is working. This working state will cause the life of the piston to be seriously reduced and the reliability to be reduced.

In addition, the processability of exhausting from the middle is relatively poor, especially the processing of the inner hole, the connection of the outlet hose, and the reliability of the hose.

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