摘要:
Disclosed is a method for testing the performance of a heat pipe and an apparatus for conducting the performance test. The apparatus includes a heating device and a cooling device. Two ends of the heat pipe are thermally connected to the heating device and the cooling device, respectively. The heating device is applied to supply thermal energy to the heat pipe. When the quantity of thermal energy being transferred to the heat pipe reaches to a specified value, the temperatures at the two ends of the heat pipe are detected. If the temperature difference between the two ends is lower than a predetermined value, the heat pipe being tested is deemed as acceptable.
摘要:
A heat pipe (10) includes a metal casing (12) having a closed end (14) and a sealed end (16) located opposite to the closed end. The sealed end of the heat pipe includes a cramped section (16a) having a wave-shaped cross-section. A device for sealing an open end (16a) of the heat pipe includes a pair of clamping blocks (26) for clamping the open end of the heat pipe in a first direction and a pair of pressing blocks (22, 24) located at opposite sides of the open end of the heat pipe and being capable of moving towards each other, thereby approaching the open end of the heat pipe in a second direction perpendicular to the first direction. The pressing blocks have a pair of complementary wave-shaped forming faces (22a, 24a) formed thereon.
摘要:
Disclosed is an ageing process (100) for a group of sealed products to cause defective products among the group of sealed products, if any, to appear in advance so that the defective products can be subsequently detected easily and further removed from the group of sealed products. The ageing process includes the following steps: placing the sealed products into an ageing oven (10); releasing the gas originally existing in the ageing oven, and filling nitrogen gas and hydrogen gas into the ageing oven until the gas pressure inside the ageing oven reaches a first value; heating the sealed products until the temperature inside the ageing oven reaches a second value; conducting ageing on the sealed products under a specified time period and taking the sealed products out of the ageing oven after the time period is over.
摘要:
A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling a heat pipe to be tested. A movable portion is capable of moving relative to the immovable portion and has a cooling structure defined therein for cooling the heat pipe. A receiving structure is located between the immovable portion and the movable portion for receiving the heat pipe therein. At least a temperature sensor is attached to at least one of the immovable portion and the movable portion for thermally contacting the heat pipe in the receiving structure for detecting temperature of the heat pipe. An enclosure encloses the immovable portion and the movable portion therein and has sidewalls thereof slidably contacting at least one of the immovable portion and the movable portion.
摘要:
A sealing structure formed at an end of a heat pipe, includes a two-layer structure, which can be divided into two walls and a rib interconnecting the walls together, wherein the rib points to a center of the heat pipe. A method for manufacturing the sealing structure includes following steps: (1) providing a metallic pipe with an end sealed and an opposite open portion; (2) pressing the open portion of the pipe to form the two-layer sealing structure by using a pair of pressing molds, wherein the pair of pressing molds comprises a first pressing mold and a second pressing mold, the first mold having an M-shaped convex portion, the second mold having an M-shaped concave portion corresponding to the convex portion.
摘要:
A method of making a heat pipe includes the steps of: providing a mandrel, a capillary wick and a straight tubular shell; inserting the mandrel and the capillary wick into the shell; cramming powder into the shell, wherein the powder can be sintered between the shell and the mandrel; sintering the shell having the mandrel, the capillary wick and the powder therein; and drawing the mandrel out of the shell and filling working media into the pipe, and vacuuming and sealing the pipe. The mandrel defines a longitudinal slot therein, and the capillary wick is positioned in the slot.
摘要:
A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling a heat pipe requiring to be tested. A movable portion is capable of moving relative to the immovable portion and has a cooling structure therein for cooling the heat pipe. A receiving structure is located between the immovable portion and the movable portion for receiving the heat pipe therein. At least one temperature sensor is attached to at least one of the immovable portion and the movable portion. The least one temperature sensor has a detecting section exposed in the receiving structure for thermally contacting the heat pipe in the receiving structure to detect a temperature of the heat pipe.
摘要:
A capacitive touch pad includes a sensor layer for sensing a touch of an object and a dummy trace below the sensor layer. The dummy trace is sensed to obtain a sensed value while the dummy trace is shielded by the sensor layer from interference of the object such that the sensed value reflects only environmental variation. Therefore, environmental variation can be identified depending on the sensed value, and the sensor layer can be calibrated properly.
摘要:
A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling a heat pipe to be tested. A movable portion is capable of moving relative to the immovable portion and has a cooling structure defined therein for cooling the heat pipe. A receiving structure is located between the immovable portion and the movable portion for receiving the heat pipe therein. At least a temperature sensor is attached to at least one of the immovable portion and the movable portion for thermally contacting the heat pipe in the receiving structure for detecting temperature of the heat pipe. An enclosure encloses the immovable portion and the movable portion therein and has sidewalls thereof slidably contacting at least one of the immovable portion and the movable portion.
摘要:
An optimal power calibration method includes steps of: performing a first optimal power calibration procedure at a first power calibration area with a first recording speed to obtain a first optimal power level corresponding to the first recording speed; performing a second optimal power calibration procedure at a second power calibration area with a second recording speed to obtain a second optimal power level corresponding to the second recording speed, the second recording speed being higher than the first recording speed; and determining an optimal recording power level for recording data on a disc at a predetermined speed based on the first optimal power level and the second optimal power level.