The late Steve Jobs famously hated cooling fan cacophony. The strange 64k, 128k, and Mac Plus compress Macs had no inner fans and depended on healthy convection for cooling. So did a second-generation form cause fanless “Earth Tones” variants of a teardrop iMac pattern in a early ’00s, and a G4 Cube Power Mac. In all these cases, it done for blessedly wordless computing, though with really churned success in terms of effective cooling.
Compact Macs got an inner fan with a Mac SE chronicle in 1988. A fan was behind in a iMac with a G4 “Luxo Jr.” model, and some third celebration hardware upgrades for a Cube incorporated cooling fans.
Apple laptops were fanless as good adult until a PowerBook 3400c in 1997, though given then, and generally given a switch to hotter (in some-more ways than one) Intel processor silicon in 2006, thermostatically-regulated cooling fan pole has been a visit accompaniment to Mac unstable computing.
Thus far, iPads—with their ARM-based A-Series system-on-chip processors—have remained fanless, and a thermal form of a full-size iPad has reportedly even softened rather with a switch to 32nm routine A6X SoC’s in a fourth-generation iPad. The 32nm A5 SoC in a new iPad mini is also comparatively cool-running.
However, it stays to be seen either fanlessness can be confirmed as inscription computers turn some-more powerful, and all Mac systems now have fans. The new Retina Display MacBooks have inner cooling fans with asymetrically-spaced blades designed to beget reduction sound than required symmetrically-bladed fans, though any small-diameter, high-revving, electric motor-driven fan is going to beget noise.
Which segues us to United States Patent 8,305,728, awarded to Apple by a U.S. Patent Office, for “Methods and apparatus for cooling electronic devices.”
The obvious epitome describes “various apparatus and techniques for deflecting or redirecting a upsurge of ionized atmosphere generated from an ionic breeze generator. In general, a deflection margin generator can be located present to a trail of a upsurge of ionized air. The deflection margin generator is configured to beget an electromagnetic field, that deflects a slightest a apportionment of a upsurge of ionized atmosphere to a opposite trail and might presumably boost inner feverishness transfer.”
The inventors are cited as Jean L. Lee and Richard Lidio Blanco, Jr., presumably operative employees of a obvious assignee: Apple Inc.
Claimed in a obvious focus is a processing device comprising an ionic breeze generator configured to beget a upsurge of ionized atmosphere along a trail and a deflection margin generator located present a trail of a flow. The deflection margin generator is configured to beget an electromagnetic margin that deflects during slightest a apportionment of a upsurge of a ionized atmosphere to a opposite path, wherein a electromagnetic margin exerts a Lorentz force on a during slightest a apportionment of a upsurge of a ionized atmosphere by an enclosing carrying vents located in a trail of a flow. The initial opening is located in a trail of a upsurge and a second opening is located in a opposite trail of a flow, with during slightest a apportionment of a upsurge deflected to cold a second component.
The estimate device controlling this routine would embody a feverishness sensor connected to a controller, configured to clarity inner temperatures and configured to activate a deflection margin generator if a feverishness exceeds a threshold temperature, and also a energy expenditure sensor connected to a controller configured to activate a deflection margin generator if a energy exceeds a specified threshold.
Translation: a presumably wordless means of cooling down inner components in electronic devices.
The obvious focus goes on to observe that complicated electronic systems tend to beget vast amounts of heat, with cooling inclination now in use currently being essentially mechanically-based devices, such as electric fans and feverishness sinks.
The cooling device being due for use in such systems in a obvious focus is an ionic breeze generator, that generates airflow formed on a magnetism of atmosphere molecules.
If Apple can make this work, it will be acquire service to those of us who, like Steve Jobs, rebuff fan noise.
For full sum of a obvious application, see a United States Patent and Trademark Office.