DC motor actuated flow diversion valve
AssigneeHydrotech Chemical Corporation
InventorRoland V. Cabalfin
Life of this patent
Estimating the term…
Abstract
A motor actuated electric valve includes a DC motor, a gear reducer assembly, a valve body and a fluid diverter mechanically attached to the output of the gear reducer assembly. Rotation of the motor results in repositioning of the diverter within the valve body. Unidirectional and bidirectional operation of the motor are achieved via a rectifier circuit and cams which actuate limit switches to interrupt operation of the motor when the diverter is in a first or a second desired position. The valve is readily substituted for current AC actuated valves since the rectifier is incorporated into the valve actuator.
Claims16
A motor actuated electric valve comprising:
- a valve body having an inlet port, a first outlet port, a second outlet port, said valve body defining a passageway communicating between the inlet port and the first and second outlet ports and an aperture in fluid communication with the passageway;
- a fluid diverter situated within said aperture of said valve body and providing fluid communication only between said inlet port and said first outlet port when said diverter is rotated to a first position, said diverter providing fluid communication only between said inlet port and said second outlet port when said diverter is rotated to a second position;
- a DC motor having a motor shaft;
- means for increasing torque, said means for increasing torque including an input shaft coupled to the shaft and an output shaft, said means for increasing torque producing increased torque at said output shaft in exchange for a corresponding decrease in rotational speed of said output shaft versus said input shaft;
- engaging means for coupling said diverter to the output shaft;
- and
- AC to DC power source means for converting an AC excitation signal into a DC power signal and supplying said DC power signal to said DC motor.
An electric valve comprising:
- a valve body having an inlet port, a first outlet port, a second outlet port and an aperture;
- means for diverting fluid situated within said aperture of said valve body and enabling fluid communication only between said inlet port and said first outlet port when said means for diverting is rotated to a first position, said means for diverting enabling fluid communication only between said inlet port and said second outlet port when said means for diverting is rotated to a second position;
- a DC motor having a motor shaft and electrical leads for connecting said motor to a source of power;
- and
- means for increasing torque, said means for increasing torque including an input shaft coupled to said motor shaft and an output shaft coupled to said means for diverting fluid, said means for increasing torque producing increased torque at said output shaft in exchange for a corresponding decrease in rotational speed of said output shaft versus said input shaft, and wherein rotation of said output shaft moves said means for diverting into said first position or said second position;
- power source means for supplying a DC power signal to said electrical leads of said DC motor, said power source means including circuit means for interrupting the supply of said DC power signal to said motor as said means for diverting moves into said first or said second position.
Dependencies are inferred from the claim text.