Submersible Water Pump Device

Abstract

A submersible water pump device is provided. The submersible water pump device includes a housing that contains a stator and windings and a control circuit. A rotor with curved impeller blades, which is contained within the stator attached to the windings, is inserted into the proximal end of the housing. A filter and volute, which cover the curved impeller blades of the rotor, are removably attached to the housing. The control circuit detects the polarity of the magnetic field of the rotor to control when to turn the motor on, so that the rotor only runs in one direction to increase the pump's efficiency using the curved impeller blades.

1 . A submersible water pump device, comprising:
 a motor, wherein the motor includes a stator and a rotor positioned within the stator on a shaft, and wherein the stator is connected to windings that energize the stator to produce a rotating magnetic field that produces a torque on the rotor causing rotation of the rotor;   an impeller with curved blades connected to an end of the rotor on the shaft, wherein the impeller with curved blades is used to increase an amount of water discharged from the submersible water pump device; and   a control circuit that includes a motor control circuit to control running of the motor in the submersible water pump device, wherein the motor control circuit includes control logic for determining when and when not to run the motor.   
   
   
       2 . The submersible water pump device of  claim 1 , wherein the motor control circuit detects a polarity of the rotating magnetic field around the rotor to determine when to turn the motor on. 
   
   
       3 . The submersible water pump device of  claim 1 , wherein the motor control circuit controls the rotation of the rotor by detecting the polarity of the rotating magnetic field around the rotor to determine when to turn the motor on so that the rotation of the rotor is unidirectional in order to utilize the impeller with curved blades. 
   
   
       4 . The submersible water pump device of  claim 1 , wherein the control circuit includes a water sensor circuit for detecting a low water level entering the submersible water pump device. 
   
   
       5 . The submersible water pump device of  claim 4 , wherein the water sensor circuit directs the motor control circuit to stop the motor from running in response to detecting the low water level entering the submersible water pump device to prevent damage caused by abrasion, and wherein the water sensor circuit directs the motor control circuit to start the motor in response to detecting that the low water level entering the submersible water pump device no longer exists. 
   
   
       6 . The submersible water pump device of  claim 1 , wherein the motor control circuit detects when the rotor is struggling to rotate, and wherein the motor control circuit automatically shuts down a power supply to the motor in response to the rotor struggling to rotate to prevent an electrical current buildup and then restarts the power supply after a predetermined time interval. 
   
   
       7 . The submersible water pump device of  claim 4 , wherein a water level sensor is included on the control circuit, and wherein the water level sensor is electrically connected to the water sensor circuit. 
   
   
       8 . The submersible water pump device of  claim 4 , wherein the control circuit includes a voltage regulator circuit to regulate voltage from a power source to the motor control circuit and the water sensor circuit. 
   
   
       9 . A submersible water pump device, comprising:
 a motor, wherein the motor includes a stator and a rotor positioned within the stator on a shaft, and wherein the stator is connected to windings that energize the stator to produce a rotating magnetic field that produces a torque on the rotor causing rotation of the rotor;   an impeller with curved blades connected to an end of the rotor on the shaft, wherein the impeller with curved blades is used to increase an amount of water discharged from the submersible water pump device; and   a control circuit that includes a motor control circuit to control running of the motor in the submersible water pump device, wherein the motor control circuit controls the rotation of the rotor by detecting the polarity of the rotating magnetic field around the rotor to determine when to turn the motor on so that the rotation of the rotor is unidirectional in order to utilize the impeller with curved blades, and wherein the control circuit includes a water sensor circuit for detecting a low water level entering the submersible water pump device, wherein the water sensor circuit directs the motor control circuit to stop the motor from running in response to detecting the low water level entering the submersible water pump device to prevent damage caused by abrasion, and wherein the water sensor circuit directs the motor control circuit to start the motor in response to detecting that the low water level entering the submersible water pump device no longer exists, and wherein the motor control circuit detects when the rotor is struggling to rotate, and wherein the motor control circuit automatically shuts down a power supply to the motor in response to the rotor struggling to rotate to prevent an electrical current buildup and then restarts the power supply after a predetermined time interval.   
   
   
       10 . The submersible water pump device of  claim 9 , wherein a water level sensor is included on the control circuit, and wherein the water level sensor is electrically connected to the water sensor circuit. 
   
   
       11 . The submersible water pump device of  claim 4 , wherein the control circuit includes a voltage regulator circuit to regulate voltage from a power source to the motor control circuit and the water sensor circuit. 
   
   
       12 . A method for assembling a submersible water pump device, the method comprising:
 connecting an impeller having curved blades to a proximal end of a rotor;   positioning the rotor connected to the impeller having curved blades on a shaft;   inserting the shaft and a distal end of the rotor into a stator connected to windings to form a motor, wherein the windings energize the stator to produce a rotating magnetic field that produces a torque on the rotor causing rotation of the rotor;   connecting the motor electrically to a control circuit that includes a motor control circuit and a water sensor circuit, wherein the motor control circuit controls running of the motor and includes control logic for determining when and when not to run the motor. and wherein the water sensor circuit detects a low water level entering the submersible water pump device;   placing the motor and the control circuit into a housing so that the impeller with curved blades extends out of the housing; and   attaching a volute to the housing over the impeller having curved blades that extends from the housing.   
   
   
       13 . The method of  claim 12 , wherein the motor control circuit detects a polarity of the rotating magnetic field around the rotor to determine when to turn the motor on. 
   
   
       14 . The method of  claim 12 , wherein the motor control circuit controls the rotation of the rotor by detecting the polarity of the rotating magnetic field around the rotor to determine when to turn the motor on so that the rotation of the rotor is unidirectional in order to utilize the impeller with curved blades. 
   
   
       15 . The method of  claim 12 , wherein the water sensor circuit directs the motor control circuit to stop the motor from running in response to detecting the low water level entering the submersible water pump device to prevent damage caused by abrasion, and wherein the water sensor circuit directs the motor control circuit to start the motor in response to detecting that the low water level entering the submersible water pump device no longer exists. 
   
   
       16 . The method of  claim 12 , wherein the motor control circuit detects when the rotor is struggling to rotate, and wherein the motor control circuit automatically shuts down a power supply to the motor in response to the rotor struggling to rotate to prevent an electrical current buildup and then restarts the power supply after a predetermined time interval. 
   
   
       17 . The method of  claim 12 , wherein a water level sensor is included on the control circuit, and wherein the water level sensor is electrically connected to the water sensor circuit. 
   
   
       18 . The method of  claim 12 , wherein the control circuit includes a voltage regulator circuit to regulate voltage from a power source to the motor control circuit and the water sensor circuit.