Reciprocating compressor

The simplified suction muffler design with noise-reducing spaces and valley portions addresses manufacturing costs and noise reduction challenges, enhancing compressor performance and efficiency by increasing suction volume and preventing oil backflow.

EP4764216A1Pending Publication Date: 2026-06-24LG ELECTRONICS INC
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Patent Information

Application Number
EP2025223621
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-12-20
Filing Date
2025-12-16
Publication Date
2026-06-24

AI Technical Summary

Technical Problem

Existing reciprocating compressors face challenges in reducing manufacturing costs, noise, and suction noise due to complex muffler structures, limited suction volume, and oil backflow issues, particularly in smaller designs.

Method used

A simplified suction muffler design with a noise-reducing space and valley portions in the suction flow path, along with a refrigerant collection portion and oil damping portion, to enhance noise reduction and prevent oil backflow.

Benefits of technology

The design effectively reduces manufacturing costs, increases suction volume, and minimizes noise and oil backflow, improving compressor performance and efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

A reciprocating compressor is disclosed. The reciprocating compressor includes a shell, a driving motor, a driving shaft, a piston, a cylinder, and a suction muffler, and the suction flow path may include a valley portion formed as a cross-section area of the suction flow path becomes small. Accordingly, the structure of the suction muffler is simplified, thereby saving manufacturing cost of the suction muffler, a noise-reducing space is sufficiently secured while simplifying the structure of the suction muffler, thereby effectively reducing vibration and / or noise in the suction muffler, and the vibration and / or noise in the suction muffler can be more effectively reduced using the valley portion.
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Citation Information

Patent Citations

  • Reciprocating compressor

    KR1020160055499A

  • Compressor

    KR1020200132420A

  • Gas treatment system and a ship having the same

    KR1020210153506A

  • A hermetic compressor with suction muffler

    EP2929188B1

  • Suction muffler for a refrigerant compressor

    EP4170167A1