Power supply apparatus
First Claim
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1. A power supply apparatus comprising a housing, a component which generates heat when operating, said component being disposed in said housing, and a fan disposed in said housing for cooling said heat-generating component, wherein said power supply apparatus further comprises:
- a driving unit for driving said fan;
a temperature detector for providing a temperature representative signal representing the temperature in said housing;
means for calculating the difference between the value of said temperature representative signal and a predetermined reference value; and
control signal generating means for generating a control signal causing said driving unit to apply to said fan a driving voltage for setting the rotation speed of said fan to zero during a time period when said difference indicates that the value of said temperature representative signal is smaller than said reference value, and generating a control signal causing said driving unit to apply to said fan a driving voltage which causes said fan to rotate at a substantially maximum rotation speed for only a predetermined time period in an initial portion of the time period when said difference indicates that the value of said temperature representative signal is equal to or greater than said reference value and then causes said fan to rotate at a rotation speed which is determined in accordance with said difference.
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Abstract
A power supply apparatus includes a housing containing therein a component which generates heat when operating, a fan for cooling the heat-generating component, and a driving unit for driving the fan. The housing also contains therein a temperature detector for detecting the temperature in the housing and providing a detected-temperature representing signal. In response to the detected-temperature representing signal, a control unit provides the driving unit with a control signal to change the rotation speed of the fan.
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Citations
11 Claims
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1. A power supply apparatus comprising a housing, a component which generates heat when operating, said component being disposed in said housing, and a fan disposed in said housing for cooling said heat-generating component, wherein said power supply apparatus further comprises:
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a driving unit for driving said fan; a temperature detector for providing a temperature representative signal representing the temperature in said housing; means for calculating the difference between the value of said temperature representative signal and a predetermined reference value; and control signal generating means for generating a control signal causing said driving unit to apply to said fan a driving voltage for setting the rotation speed of said fan to zero during a time period when said difference indicates that the value of said temperature representative signal is smaller than said reference value, and generating a control signal causing said driving unit to apply to said fan a driving voltage which causes said fan to rotate at a substantially maximum rotation speed for only a predetermined time period in an initial portion of the time period when said difference indicates that the value of said temperature representative signal is equal to or greater than said reference value and then causes said fan to rotate at a rotation speed which is determined in accordance with said difference. - View Dependent Claims (2, 3, 4, 5)
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6. A power supply apparatus comprising a housing, a component which generates heat when operating, said component being disposed in said housing, and a fan disposed in said housing for cooling said heat-generating component, wherein said power supply apparatus further comprises:
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a driving unit for driving said fan; a power detector for detecting output power of said power supply apparatus and generating a power representative signal representing the detected output power; and a control unit for applying a control signal to said driving unit to change the rotation speed of said fan in accordance with said power representative signal. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification
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Current AssigneeThermal Dynamics Corporation (Enovis Corp.), Sansha Electric Manufacturing Company Limited
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Original AssigneeThermal Dynamics Corporation (Enovis Corp.), Sansha Electric Manufacturing Company Limited
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InventorsDumont, Michael R., Hansen, Nathaniel S., Ishii, Hideo, Moriguchi, Haruo
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Primary Examiner(s)Wong, Peter S.
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Assistant Examiner(s)Patel, Rajnikant B.
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Application NumberUS08/863,137Time in Patent Office511 DaysField of Search363/141, 363/21, 363/89, 363/41, 363/37, 363/97, 361/31, 361/25, 361/27, 361/33, 361/695, 165/40, 165/80.3US Class Current363/141CPC Class CodesH02M 3/28 using discharge tubes with ...H05K 7/20209 Thermal management, e.g. fa...
