| 摘要 |
<p>S.H. Frederick-5 IMPROVED HYDROTHERAPY DEVICE A hydrotherapy device, such as a spa, whirlpool or jet stream exerciser is connected to a closed water circulation loop having a drain, a pump, a heater, a filter, a valve controlled filter bypass and injection nozzles. The pump is equipped with a close-coupled drive motor having two sets of stator windings for allowing the selection of one of two motor speeds to achieve improved operation and greater efficiency of the hydrotherapy device. A low motor speed is selected during periods of non-use, at which time the filter device is connected into the circulation loop so that a low water circulation rate is provided in order to maintain purity of the water. During periods of use, a higher motor speed is selected and the filter is bypassed to provide a high water circulation rate and high velocity water injection into the hydrotherapy device. Reduced motor speed during periods of non-use results in substantial energy savings and a reduction in the noise generated by the device.</p> |
