System and method for starting pump
First Claim
1. A starting system for a pump comprising:
- a motor for driving the pump;
an electric source connected to the driving motor for supplying the driving motor with electric power;
a selector switch located between the driving motor and the electric source for reversing polarity of the electric power supplied from the electric source to the driving motor while selectively connecting the driving motor to the electric source and disconnecting the driving motor from the electric source;
a starter sensor provided with the driving motor for sensing whether or not the driving motor has been started;
a temperature sensor provided for sensing a temperature; and
a control unit connected to the electric source, the selector switch, the starter sensor and the temperature sensor, wherein the control unit operates the selector switch so as to repeatedly give the driving motor indications of reverse rotation and normal rotation in a case where the starter sensor does not sense that the driving motor has been started even if the control unit operates the selector switch so as to give the driving motor the indication of normal rotation in a state where the temperature sensed by the temperature sensor is a preset temperature or below.
1 Assignment
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Accused Products
Abstract
A starting system for a pump includes a driving motor, an electric source, a selector switch, a starter sensor, a temperature sensor and a control unit. The selector switch is located between the driving motor and the electric source for reversing polarity of the electric power supplied from the electric source to the driving motor. The starter sensor senses whether or not the driving motor has been started. The temperature sensor senses a temperature. The control unit operates the selector switch so as to repeatedly give the driving motor indications of reverse rotation and normal rotation in a case where the starter sensor does not sense that the driving motor has been started even if the control unit operates the selector switch so as to give the driving motor the indication of normal rotation in a state where the temperature sensed by the temperature sensor is below a preset temperature.
23 Citations
34 Claims
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1. A starting system for a pump comprising:
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a motor for driving the pump;
an electric source connected to the driving motor for supplying the driving motor with electric power;
a selector switch located between the driving motor and the electric source for reversing polarity of the electric power supplied from the electric source to the driving motor while selectively connecting the driving motor to the electric source and disconnecting the driving motor from the electric source;
a starter sensor provided with the driving motor for sensing whether or not the driving motor has been started;
a temperature sensor provided for sensing a temperature; and
a control unit connected to the electric source, the selector switch, the starter sensor and the temperature sensor, wherein the control unit operates the selector switch so as to repeatedly give the driving motor indications of reverse rotation and normal rotation in a case where the starter sensor does not sense that the driving motor has been started even if the control unit operates the selector switch so as to give the driving motor the indication of normal rotation in a state where the temperature sensed by the temperature sensor is a preset temperature or below. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of starting a pump including a motor for driving the pump, comprising the steps of:
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sensing a temperature;
giving the driving motor an indication of normal rotation; and
starting the driving motor by giving the driving motor indications of reverse rotation and normal rotation repeatedly in a case where the driving motor is not started even if the indication of normal rotation is given to the driving motor in a state where the sensed temperature is a preset temperature or below. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A starting system for a pump motor, comprising:
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a starter sensor located near the pump motor for ultimately determining an operational status of the pump motor, the operational status being active and inactive;
a temperature sensor for detecting a temperature; and
a control unit connected to said starter sensor and said temperature sensor for generating a signal to the pump motor, in response to the inactive operational status from said starter sensor after a predetermined normal activation attempt of starting the pump motor, said control unit generating a reverse/forward rotation signal sequence indicative of alternately rotating the pump motor in a predetermined reverse direction and a predetermined forward direction if the detected temperature is equal to or below a predetermined temperature. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of starting a pump motor, comprising the steps of:
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rotating the pump motor in a predetermined forward direction;
determining an operational status of the pump motor, the operational status being active and inactive;
in response to the inactive operational status, detecting a temperature; and
generating a reverse/forward rotation signal sequence indicative of alternately rotating the pump motor in a predetermined reverse direction and the predetermined forward direction if the detected temperature is equal to or below a predetermined temperature. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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Specification