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US 2013/0170518 A1Published application
Fan testing apparatus and testing method
AssigneeHon Hai Precision Industry Co., Ltd.
InventorYAO-TING CHANG
Life of this patent
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Abstract
A fan testing apparatus includes an air duct defining opposite air inlet and air outlet, a heating member received in the air duct, a first thermometer attached to the heating member, and a second thermometer positioned at the inlet of the air duct. The fan generates airflow in the air duct through the inlet and out of the air duct through the outlet to cooling the heating member. A surface temperature of the heating member is measured by the first thermometer. An environmental temperature at the air inlet is measured by the second thermometer.
Claims7
A fan testing apparatus comprising:
- a hollow air duct defining an air inlet and an air outlet respectively at two opposite ends thereof;
- a heat generating member mounted in the air duct adjacent to the air outlet;
- a first thermometer contacting the heat generating member to measure a surface temperature of the heat generating member;
- and
- a second thermometer positioned at the inlet of the air duct to measure an environment temperature at the air inlet.
2 more elements
A fan testing method comprising:
- providing a fan testing apparatus comprising:
- an air duct defining an air inlet, and an air outlet;
- a heat generating member mounted in the air duct adjacent to the air outlet;
- a first thermometer contacting the heating member;
- and
- a second thermometer positioned at the inlet of the air duct;
- powering the heat generating member to a certain temperature;
- mounting a reference fan into the air duct;
- powering on the reference fan to generate an airflow entering the air duct through the air inlet, and out of the air duct through the air outlet, thereby cooling the heat generating member;
- measuring a surface temperature Ta of the heat generating member with the first thermometer, and an environment temperature Te at the air inlet with the second thermometer;
- calculating a temperature difference ΔT1, which is equal to Ta−Te;
- taking the reference fan out of the air duct, and mounting a to-be-tested fan into the air duct;
- powering on the to-be-tested fan to cool the heat generating member;
- measuring a surface temperature Tb of the heat generating member with the first thermometer, and an environment temperature Tf at the air inlet with the second thermometer;
- calculating a temperature difference ΔT2, which is equal to Tb−Tf;
- comparing the temperature difference ΔT2 with the temperature difference ΔT1, if the temperature difference ΔT2 is smaller than or equal to the temperature difference ΔT1, the to-be-tested fan is eligible;
- if the temperature difference ΔT2 is greater than the temperature difference ΔT1, the to-be-tested fan is ineligible.
14 more elements
Dependencies are inferred from the claim text.