Noise Abatement for Elevator Submersible Power Units

摘要

A hydraulic elevator system includes a tank and power unit configured with noise and/or vibration abatement features. In one aspect the tank may include an insulated and sealed lid. In another aspect tank-to-floor dampening pads may be used. In another aspect the tank may have an increased thickness and/or stiffening trays or panels may be installed on the tank. Still in yet other aspects the noise and/or vibration abatement features may be associated with the power unit. For instance, in one aspect of the present disclosure the power unit may mount to the tank using a plurality of isolators. In another aspect, silencers and/or an expansion tank may be used to alter the hydraulic fluid flow properties within the system. Still yet, in another aspect certain noise generating components of the power unit may be wrapped in a noise blanket having an air barrier within.

主权项

1. A hydraulic elevator system comprising:
a tank configured to be mounted to a floor; a pump disposed within the tank and operable to transfer hydraulic fluid through a power unit; a motor connected to the pump and operable to drive the pump; and an expansion tank in fluid communication with the pump, wherein the expansion tank comprises an increased cross-sectional flow area compared to adjacent piping connected to the expansion tank.