Pump apparatus, system having the same, and method for operating the same
First Claim
1. A pump apparatus comprising:
- a housing;
a rotor that is eccentrically accommodated in the housing;
a motor for rotating the rotor;
a vane that is substantially radially movable relative to the rotor, the vane having a radially outer end that is slidable relative to an inner circumferential periphery of the housing as both the rotor and the vane rotate for increasing or decreasing pressure of gas;
a pressure sensor that detects pressure of the gas; and
a control unit that evaluates whether an adherence abnormality, in which the vane adheres to the rotor, occurs, in accordance with both a detection signal of the pressure sensor and electricity supplied to the motor when the motor rotates the rotor,wherein when the control unit determines the adherence abnormality to be caused, the control unit operates the motor to remove the vane from the rotor.
1 Assignment
0 Petitions
Accused Products
Abstract
A pump apparatus includes a housing. A rotor is eccentrically accommodated in the housing. A motor rotates the rotor in the housing. A vane is substantially radially movable relative to the rotor. The vane has a radially outer end that is slidable relative to an inner circumferential periphery of the housing as the rotor and the vane rotates for increasing or decreasing pressure of gas. A pressure sensor detects pressure of the gas. A control unit that evaluates whether an adherence abnormality, in which the vane adheres to the rotor, occurs in accordance with both a detection signal of the pressure sensor and electricity supplied to the motor when the motor rotates the rotor. When the control unit determines the adherence abnormality to be caused, the control unit operates the motor to remove the vane from the rotor.
61 Citations
8 Claims
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1. A pump apparatus comprising:
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a housing; a rotor that is eccentrically accommodated in the housing; a motor for rotating the rotor; a vane that is substantially radially movable relative to the rotor, the vane having a radially outer end that is slidable relative to an inner circumferential periphery of the housing as both the rotor and the vane rotate for increasing or decreasing pressure of gas; a pressure sensor that detects pressure of the gas; and a control unit that evaluates whether an adherence abnormality, in which the vane adheres to the rotor, occurs, in accordance with both a detection signal of the pressure sensor and electricity supplied to the motor when the motor rotates the rotor, wherein when the control unit determines the adherence abnormality to be caused, the control unit operates the motor to remove the vane from the rotor. - View Dependent Claims (2, 3, 4)
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5. A pump apparatus comprising:
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a housing; a rotor that is accommodated in the housing; a motor for rotating the rotor; a vane that is substantially radially extendable relative to the rotor as the motor rotates for increasing or decreasing pressure of gas; a pressure sensor that detects pressure of the gas; and a control unit that evaluates whether the vane adheres to the rotor in accordance with both the pressure of the gas and electricity supplied to the motor when the motor rotates the rotor, wherein when the control unit determines the vane to be adhering to the rotor, the control unit operates the motor-to remove the vane from the rotor.
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6. A method for operating a pump apparatus, the method comprising:
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supplying electricity to a motor for rotating a rotor and radially extending a vane from the rotor by centrifugal force for increasing or decreasing pressure of gas; detecting pressure of the gas; evaluating whether the vane adheres to the rotor in accordance with both the pressure of the gas and the electricity supplied to the motor; and operating the motor to remove the vane from the rotor when determining the vane to be adhering to the rotor.
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7. A method for operating a system, which is substantially enclosed, the method comprising:
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operating a switching valve to communicate a pump with the system through a reference orifice; supplying electricity to a motor of a pump for rotating a rotor and radially extending a vane from the rotor by centrifugal force for increasing or decreasing pressure of gas in the system through the reference orifice; detecting pressure of the gas; evaluating whether both the pump and the switching valve are normal, in accordance with both the pressure of the gas and the electricity supplied to the motor when detecting the pressure of the gas; operating the switching valve to communicate the pump directly with the system when both the pump and the switching valve are determined to be normal; and evaluating whether leakage occurs in the system by comparing a time trend of the pressure of the gas with a predetermined time trend.
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8. A method for operating a system, which is substantially enclosed, the method comprising:
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operating a switching valve to communicate a pump with the system through a reference orifice; supplying electricity to a motor of a pump for rotating a rotor and radially extending a vane from the rotor by centrifugal force for increasing or decreasing pressure of gas in the system through the reference orifice; detecting pressure of the gas; evaluating whether both the pump and the switching valve are normal, in accordance with both the pressure of the gas and the electricity supplied to the motor when detecting the pressure of the gas; determining the vane to be adhering to the rotor when pressure of the gas is abnormal and electricity supplied to the motor is equal to or greater than predetermined threshold; and determining the switching valve to be abnormal when pressure of the gas is abnormal and when electricity supplied to the motor is less than predetermined threshold.
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Specification