SYSTEM AND METHOD FOR REAL-TIME ADJUSTMENT AND OPERATION OF COOLING FAN IN WELDING OR CUTTING SYSTEM
First Claim
1. A welding or cutting power system, comprising:
- a signal conversion module which receives an AC input signal and converts said AC input signal to a welding or a cutting output signal and outputs said output signal to a load, where said signal conversion module comprises a component which increases in temperature during operation of said signal conversion module;
a cooling fan used to cool said component of said signal conversion module,a motor coupled to said fan to operate said cooling fan,a temperature sensor which senses a temperature of said component and generates a temperature feedback signal corresponding to the sensed temperature, anda fan controller which controls a rotational speed of said fan based on at least said temperature feedback signal,wherein as said sensed temperature of said at least one component incrementally changes, said fan controller incrementally and directly changes said rotational speed.
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Accused Products
Abstract
A welding or cutting power system having a signal conversion module, which receives an AC input signal and converts the AC input signal to an output signal. The output signal is output to a load. The signal conversion module comprises at least one component which increases in temperature during operation of the signal conversion module, and a cooling fan is used to cool the at least one component of the signal conversion module. A motor is coupled to the fan to operate said cooling fan. The power system also includes a temperature sensor, which senses a temperature of the at least one component and generates a temperature feedback signal. The system further includes a fan controller that controls a rotational speed of the fan based on at least the temperature feedback signal.
31 Citations
28 Claims
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1. A welding or cutting power system, comprising:
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a signal conversion module which receives an AC input signal and converts said AC input signal to a welding or a cutting output signal and outputs said output signal to a load, where said signal conversion module comprises a component which increases in temperature during operation of said signal conversion module; a cooling fan used to cool said component of said signal conversion module, a motor coupled to said fan to operate said cooling fan, a temperature sensor which senses a temperature of said component and generates a temperature feedback signal corresponding to the sensed temperature, and a fan controller which controls a rotational speed of said fan based on at least said temperature feedback signal, wherein as said sensed temperature of said at least one component incrementally changes, said fan controller incrementally and directly changes said rotational speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 21, 22, 27)
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17. A method of cooling a welding or cutting power supply, comprising:
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providing an AC input signal to a signal conversion module which receives said and converts said AC input signal to a welding or a cutting output signal, where said signal conversion module comprises a component which increases in temperature during operation of said signal conversion module, outputting said output signal to a load, cooling said at least one component of said signal conversion module using a cooling fan, sensing a temperature of said at least one component, generating a temperature feedback signal, and controlling a rotational speed of said fan based on at least said temperature feedback signal, wherein as said sensed temperature of said at least one component incrementally changes, said rotational speed of said fan is incrementally and directly changed. - View Dependent Claims (18, 19, 20, 23, 24, 25, 26, 28)
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Specification