A scroll compressor equipped with a discharge silencer arrangement

The discharge silencer arrangement in scroll compressors addresses efficiency and noise issues by integrating a tubular element with an expansion chamber, improving acoustic damping and reducing pressure losses.

FR3129693B1Active Publication Date: 2026-03-13DANFOSS COMML COMPRESSORS SA
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Patent Information

Application Number
FR2021012577
Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-11-26
Publication Date
2026-03-13
Estimated Expiration
2041-11-26

AI Technical Summary

Technical Problem

Conventional scroll compressors with silencer assemblies experience increased flow restrictions and pressure losses, negatively impacting efficiency while attempting to dampen acoustic noise from the discharge of compressed refrigerant gas.

Method used

A discharge silencer arrangement is integrated into the discharge pressure volume, comprising a first tubular element with a silencer inlet and an expansion chamber connected via a second tubular element, which reduces pressure losses and enhances acoustic attenuation through diffusion, reflection, and interference of sound waves.

Benefits of technology

The solution provides improved acoustic attenuation and reduced pressure losses, enhancing the efficiency and reducing acoustic noise generation in scroll compressors.

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Abstract

The scroll compressor comprises a compressor shell having a discharge outlet; an orbiting volute; a fixed volute including a discharge passage (16); a discharge pressure volume (17) defined at least partially by the compressor shell and the fixed volute (7); a discharge silencer arrangement (21) fixed to the fixed volute (7) and arranged within the discharge pressure volume (17), the discharge silencer arrangement (21) comprising a first tubular element (28) provided with a silencer inlet (29) fluidly connected to the discharge passage (16), an expansion chamber (33) fluidly connected to an internal volume of the first tubular element (28), and a second tubular element (35) comprising an inlet opening into the expansion chamber (33) and an outlet opening fluidly connected to the discharge pressure volume (17). Figure 5
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