Linear Compressor Piston Suction Muffler Thermal Isolation

The patent introduces a thermal insulator as an intermediary element positioned between the piston tubular skirt and the suction muffler chamber. This insulator acts as a thermal barrier that prevents heat transfer from the piston to the gas in the muffler chamber, while still allowing the chamber to function for noise attenuation. The insulator material is specifically selected to have low thermal conductivity to effectively block heat flow.

The suction muffler is divided into functionally distinct zones: a first chamber for noise attenuation and a second chamber for gas flow. The tubular skirt is also segmented with the insulator forming a separate thermal barrier layer. This segmentation allows each zone to perform its specific function independently - noise reduction in the first chamber, heat isolation by the insulator, and gas flow in the second chamber.

The suction muffler chamber is designed to serve multiple functions simultaneously: it acts as a noise attenuation chamber, a thermal insulator housing, and a tuning mass for vibration control. By making the chamber itself the tuning mass rather than adding separate masses, the design achieves vibration control without increasing device complexity. The chamber's geometry and material properties are optimized to provide the required natural frequency adjustment.

The patent merges the vibration control function with the existing suction muffler structure. Instead of adding a separate tuning mass component, the design integrates the tuning mass function into the muffler chamber itself. The chamber's mass and stiffness characteristics are utilized to adjust the natural frequency, combining structural support, noise attenuation, and vibration control into a single integrated component.