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Cooling device utilizing internal synthetic jets

A technology for synthetic jets and cooling devices, applied in cooling/heating devices of lighting devices, lighting devices, lighting devices, etc., can solve the problems of power dissipation, extra cost, limited life, etc. Shedding and cooling enhanced, life-extending effects

Inactive Publication Date: 2010-11-17
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Disadvantages associated with existing technologies are noise, pollution, additional cost, limited lifetime, power dissipation, and additional space and weight

Method used

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  • Cooling device utilizing internal synthetic jets
  • Cooling device utilizing internal synthetic jets
  • Cooling device utilizing internal synthetic jets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] figure 1An embodiment of the invention for cooling an Ultra High Performance (UHP) lamp 1 is shown. The UHP lamp 1 comprises a parabolic reflector 2 and a front glass 3 gas-tightly attached to the reflector 2 , thereby forming an envelope 4 . The reflector 2 here is made of glass and has a reflective inner surface. A quartz burner 5 can be arranged inside the UHP lamp 1 . For a typical UHP lamp 1, there is a first hot spot 6 at the front pinch of the quartz burner (i.e., at the end of the quartz burner closest to the front glass); and in the middle of the quartz burner (i.e., Halfway between the ends of the quartz burner) the second hot spot 7. It should be noted that, provided the quartz burner is arranged horizontally, the heat distribution at the middle of the quartz burner is such that the second hot spot 7 is located in its upper part, while a cold spot 20 will be formed in its lower part.

[0036] To prevent intrinsic crystallization, these hot spots 6, 7 requ...

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PUM

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Abstract

A synthetic jet cooling device (1) for cooling an object (5), comprising: a transducer (10) adapted to generate velocity waves, and an enclosure (4) arranged to receive the velocity waves via an actuated aperture (8). The enclosure (4) is sufficiently large to generate, at the actuated aperture (8), an internal synthetic jet inside the enclosure (4). Furthermore, the enclosure (4) is arranged to contain the object (5), thereby enabling cooling ofthe object (5) bythe internal synthetic jet. The arrangement typically permits multifunctional use ofan existing enclosure, containing the object to be cooled, both for its original purpose (e.g. a reflector in a lamp, or a LED backlight module) and as an enclosure generating internal synthetic jets, why the cooling device typically requires virtually noextra space and weight, and can be provided at a low cost.

Description

technical field [0001] The invention relates to a cooling device utilizing a synthetic jet. The invention also relates to an electronic device comprising such a cooling device. Background technique [0002] The need for cooling has increased in various applications due to higher heat flux densities resulting from newly developed electronic devices, for example being more compact and / or more powerful than conventional devices. Examples of such electronic devices are UHP (Ultra High Performance) lamps and LED (Light Emitting Diode) lamps, where performance and lifetime are often limited by the heat generated. [0003] In addition to natural convection, heat transfer can be enhanced by forced convection using fans, conventional propellers or synthetic jet coolers. A typical synthetic jet actuator is disclosed in US 6,123,145 which includes a housing with a flexible controllable diaphragm. As the diaphragm moves, the volume in the chamber changes and vortices are ejected from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20H01L23/46F21V29/02F21Y101/02
CPCF04F7/00F21V29/405F21V33/0056F21Y2101/02F21V29/63F21Y2115/10H01L2924/0002H01L2924/00
Inventor L·范德坦佩尔J·H·拉默斯P·J·M·范奥斯
Owner SIGNIFY HLDG BV
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