Elastic Silencer for Vacuum Gripper Noise Reduction

The patent employs an elastic membrane as the core sound attenuation element. This thin, flexible film expands under pressurized exhaust gas to close perforations, providing sound attenuation without requiring complex internal structures. The membrane's simplicity directly addresses the contradiction by achieving noise reduction while maintaining ease of cleaning and device simplicity.

The elastic membrane contains perforations that allow exhaust gas passage when expanded. This porous structure enables the membrane to function as both a sound attenuator and a flow passage, eliminating the need for separate complex components. The perforated design provides effective sound reduction while keeping the overall device simple and cleanable.

The elastic membrane transitions from a compact state with closed perforations to an expanded state with open perforations in response to pressurized exhaust gas. This dynamic behavior allows the silencer to maintain a small volume when not in use while automatically expanding the outlet passage when needed, satisfying both compactness and flow requirements.

The membrane's physical state changes based on pressure conditions. Under low pressure, the membrane remains contracted with closed perforations, maintaining compact volume. Under high pressure from exhaust gas, the membrane expands to open perforations, increasing the effective outlet area. This parameter change resolves the contradiction between compact volume and sufficient outlet size.