Centrifugal switch bypass for reverse tumble dryers

摘要

Systems and methods for bypassing a centrifugal switch are disclosed. The systems may include a bypass relay operatively connected to the heating element and configured to bypass the centrifugal switch prior to the drum reversing rotational direction, and allow the heating element to remain energized during the drum reversing rotational direction. The centrifugal switch bypass circuit further includes a relay hold circuit operatively connected to the bypass relay and configured to cause the bypass relay to continue bypassing the centrifugal switch during the drum reversing rotational direction. The method may include, once the drum begins reversing the rotational direction, utilizing a bypass relay to bypassing the centrifugal switch. Finally, the method may include utilizing a relay hold circuit to cause the bypass relay to continue bypassing the centrifugal switch during reversal of the rotational direction.

主权项

1. A centrifugal switch bypass circuit for a dryer configured for bi-directional tumbling action, the dryer comprising a drying compartment, a motor, a centrifugal switch, and a heating element, the centrifugal switch bypass circuit comprising:
a bypass device operatively connected to the heating element and configured to:
bypass the centrifugal switch for a defined period of time upon receiving a signal from a controller prior to the controller causing a direction of the drying compartment to reverse rotational direction, wherein bypassing the centrifugal switch prevents the centrifugal switch from causing a deactivation of the heating element upon reversal of the rotational direction of the drying compartment, anddeactivate, upon expiration of the defined period of time, the bypass device, wherein deactivating the bypass device comprises powering the centrifugal switch so long as a rotational speed associated with the drying compartment is maintained above a threshold speed; and a device hold circuit operatively connected to the bypass device, wherein during the period of time the centrifugal switch is being bypassed, the device hold circuit maintains activation of the heating element.