Reciprocating compressor

Abstract

A reciprocating compressor including: a closed container (10); a reciprocating motor (20) having stators and an armature (22) disposed in the air gap between the stators (21) and making a reciprocal movement; a compression unit (30) having a piston (31) combined with the armature (22) of the reciprocating motor and a cylinder fixed inside the closed container (10); a spring unit (50) elastically supporting the armature (22) of the reciprocating motor (20) in a movement direction; and a frame unit (100) supporting the reciprocating motor (20) and the compression unit (30) having a gas hole (111) at a suitable portion thereof. Accordingly, when the armature (22) of the reciprocating motor (20) makes a reciprocal movement, the gas is compressed at the end of the armature (22), so that an increase of a flow resistance is prevented. In addition, in occurrence of an over-stroke of the armature, as the step portion (112) makes a space to prevent the magnet from releasing or damaging, the reliability of the compressor is improved.

Description

technical field [0001] The invention relates to a reciprocating compressor, in particular to a reciprocating compressor which can reduce the occurrence of flow resistance when the piston reciprocates, and can prevent the armature from being damaged when the armature is overstroked. Background technique [0002] Typically, a piston reciprocates within a cylinder, and a reciprocating compressor sucks in, compresses and discharges gas. [0003] figure 1 is a vertical cross-sectional view of a conventional reciprocating compressor. [0004] like figure 1 As shown, the traditional reciprocating compressor includes a closed shell 10 whose lower part is filled with lubricant and has a suction pipe (SP) and a discharge pipe (DP) communicating with each other. The reciprocating compressor fixed in the closed shell 10 The motor 20, the compression unit 30 that is installed in the closed casing 10 and sucks, compresses and discharges gas, the frame unit 40 that supports the reciproc...

AI Technical Summary

Problems solved by technology

Therefore, due to the existence of this flow resistance, the armature 22 fails to advance to the desired position, resulting in a shortened stroke of the piston 31, which reduces the efficiency of the compressor.

[0015] Additionally, if Figure 2B As shown, in the case where the front frame 41 supporting the inner stator 21A and the outer stator 21B is in a position closer to the armature 22, when the armature 22 overstrokes, the armature 22 is likely to collide with the front frame 41. damage the magnet 22B to the rear surface, or possibly increase the flux leakage between the two stators 21A and 21B

At the same time, when the front frame 41 supporting the inner stator 21A and the outer stator 21B is kept at a certain distance from the armature 22, the piston 31, the rear frame 43 and the closed casing 10 must be lengthened, resulting in an increase in the material cost of the expensive magnet. problem, increasing the compressor

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