2 results about "Noise effects" patented technology

The utility model relates to a bedstead with sound insulation box. The motor on the existing bedstead can produce big noise when running, influence use experience. The utility model discloses the bracket, set up in the bracket's support component and drive the drive component of support component action, drive the component includes motor and push rod, be equipped with the sound insulation box that wraps complete motor and partial push rod on the bracket, the sound insulation gap is reserved between the sound insulation box inner wall and motor outer wall, and the noise produced by the motor reciprocating reflection and dissipate in the sound insulation gap, to limit the noise transmission to the outside. The sound insulation box is used to wrap the motor and partial push rod and forms the sound insulation gap covering the surface of the motor and partial push rod, and the noise produced by the motor reciprocating reflection and energy dissipation in the sound insulation gap, effectively prolong the noise in the sound insulation gap's residence time, and then improve the noise reduction effect, improve use experience.

This application discloses a thermally broken aluminum alloy casement window, belonging to the field of doors and windows. It includes an outer frame, an inner frame installed inside the outer frame via a thermally broken strip, a side frame mounted on the inner wall of the inner frame via two hinges, a sash frame fixedly installed on one side of the side frame, and a glass assembly installed inside the sash frame. Both the inner frame and the sash frame are equipped with Helmholtz resonators. The sound insulation layer filled inside the sash frame effectively isolates external noise and reduces the impact of internal noise. At the same time, some sound energy can be absorbed by the outer tempered glass and the intermediate PVB film, while the air layer of the inner double-glazed glass can further block the transmission of sound waves. Furthermore, the Helmholtz resonator can be used to specifically absorb noise of a certain frequency.