Apple eyeing ways to improve air flow in upcoming Macs
TweetFollow Us on Twitter

Apple eyeing ways to improve air flow in upcoming Macs

A new Apple patent (number 20110189004) shows that the company is working on ways to improve air flow in upcoming Macs.

The patent involves a fan inlet and method. method and apparatus to improve air flow in an air circulating fan assembly by forming an inlet opening in a fan assembly is disclosed. A static air pressure profile is calculated along a top portion of the fan assembly configured to operate in an enclosure.

The shape of a section of the inlet opening in the top portion of the fan assembly is changed based on a pressure contour of the calculated static air pressure profile. The method is repeated iteratively one or more times using an inlet opening changed by a previously calculated static air pressure profile when calculating a subsequent static air pressure profile.

The inlet opening is positioned in the top surface of the fan assembly so that the centroid of the inlet opening is laterally offset with respect to the rotational axis of an impeller in the fan assembly. The inventors are Jesse T. Dybenko, Frank Liang, Amaury J. Heresztyn, Brett W. Degner, Thomas W. Wilson Jr., Peteris K.Augenbergs and Connor R. Duke.

Here's Apple's background and summary of the invention: "The performance of computational components and storage devices in computing systems, such as personal computers and rack mounted servers, require effective cooling mechanisms to ensure that the components and devices used inside operate in a preferred temperature range. The operational stability of central processing units (CPUs), video processing units, memory and storage devices, for example, can be adversely affected by heat accumulation within enclosed spaces in which they are housed, such as encountered in relatively thin notebook computers.

"With each newly introduced computing system, the performance of components used internally are being increased, while simultaneously, the dimensions of the external enclosure that houses the computing system are being decreased, thereby challenging the computer system designers to devise more efficient cooling methods. The narrow height dimensions of portable computer housings can require more efficient cooling methods than can be provided by thermal conduction alone or even when combined with conventional air circulation fan designs.

"Air circulation fans within computing systems can include axial fans that move air parallel to the rotational axis of the fan's impeller and centrifugal fans that blow air through an outlet perpendicular to an air inlet opening. Several geometric properties of a centrifugal fan's shape can affect its air flow performance, including the size, shape and orientation of the air inlet opening through which air is drawn when rotating the fan's impeller.

"In a typical prior art centrifugal fan, a circular inlet opening in the fan's housing is positioned concentric with the rotational axis of an impeller situated inside the fan housing. Increasing the diameter of the circular inlet opening beyond a certain size can decrease air flow (rather than increase it as intended) due to air being expelled upward from the rotating impeller blades and thereby forcing some air out of the inlet opening rather than drawing air in. Prior art methods have designed variously shaped inlet openings for centrifugal fans to change the fan's air flow. Such ad hoc methods can change the air flow but not necessarily maximize the flow rate through the fan in its intended application.

"None of the prior art methods known to the applicants have systematically designed the inlet opening according to calculated pressure contour profiles on the fan housing's surface operating in situ. Thus there exists a need for an improved method to form an inlet opening in a cooling fan to maximize flow rate.

"This paper describes various embodiments that relate to methods and apparatus to improve air flow and increase flow rate in an air circulating fan assembly. In described embodiments, a method for forming an inlet opening in a fan assembly's housing is described. The method comprises calculating a static air pressure profile along a top portion of the fan housing configured to operate in an enclosure and changing the shape of a section of the inlet opening in the top portion of the fan housing based on a pressure contour of the calculated air pressure profile.

"The fan assembly includes an impeller mounted on a bottom portion of the fan housing, a housing sidewall perpendicular to the bottom portion and enclosing the fan assembly to form an outlet opening along one side, and the top portion of the fan housing having an inlet opening perpendicular to the outlet opening and positioned over the impeller. In some embodiments, the method can be repeated iteratively one or more times using an inlet opening changed by a previously calculated static air pressure profile when calculating a subsequent static air pressure profile. In some embodiments, the fan assembly is a centrifugal fan.

"In an embodiment, the centroid of the changed inlet opening is displaced laterally from a rotational axis of the impeller in the air circulating fan assembly. The changed inlet opening can be a non-circular, smoothly convex geometric curve with no discontinuities or corner bends. In some embodiments the interior surface of the fan assembly's housing sidewall can follow a smoothly convex geometric curve, also with no discontinuities or corner bends.

"In another embodiment, an air circulating fan assembly is described. The air circulating fan assembly comprises an impeller mounted on a bottom portion of a housing of the fan assembly, a housing sidewall perpendicular to the bottom portion and enclosing the fan assembly to form an outlet opening along one side, and a top portion of the fan housing having an inlet opening perpendicular to the outlet opening and positioned over the impeller.

"The shape of a section of the inlet opening in the top portion of the fan housing is based on a pressure contour of a calculated static air pressure profile along the top portion of the fan housing when configured to operate in an enclosure. In an embodiment, the shape of the inlet opening in the fan housing is determined by using a previously determined inlet opening when calculating a subsequent static air pressure profile along the top portion of the fan housing. Preferably the fan assembly is a centrifugal fan.

"In a further embodiment, the centroid of an inlet opening in the top portion of a fan housing is displaced laterally from a rotational axis of the impeller. The shape of the inlet opening can be a non-circular, smoothly convex, arc-shaped geometric curve with no discontinuities or corner bends. In some embodiments the interior surface of the fan assembly's housing sidewall can follow a smoothly convex geometric curve, also with no discontinuities or corner bends."

Another Apple patent (number 20110188178) also appeared today and is for a high tolerance connection between elements. This is directed to connecting two or more elements using an intermediate element constructed from a material that changes between states.

An electronic device can include one or more components constructed by connecting several elements. To provide a connection having a reduced or small size or cross-section and construct a component having high tolerances, a material can be provided in a first state in which it flows between the elements before changing to a second state in which it adheres to the elements and provides a structurally sound connection.

For example, a plastic can be molded between the elements. As another example, a composite material can be brazed between the elements. In some cases, internal surfaces of the elements can include one or more features for enhancing a bond between the elements and the material providing the interface between the elements. The inventors are Scott Meyers, Mattia Pascolini, Richard Dinh, Trent Weber, Robert Schlub, Josh Nickel, Robert Hill, Nanbo Jin and Tang Tan.

-- Dennis Sellers

 
AAPL
$102.50
Apple Inc.
+0.25
MSFT
$45.43
Microsoft Corpora
+0.55
GOOG
$571.60
Google Inc.
+2.40

MacTech Search:
Community Search:

Software Updates via MacUpdate

pwSafe 3.1 - Secure password management...
pwSafe provides simple and secure password management across devices and computers. pwSafe uses iCloud to keep your password databases backed-up and synced between Macs and iOS devices. It is... Read more
StatsBar 1.8 - Monitor system processes...
StatsBar gives you a comprehensive and detailed analysis of the following areas of your Mac: CPU usage Memory usage Disk usage Network and bandwidth usage Battery power and health (MacBooks only)... Read more
Path Finder 6.5.5 - Powerful, award-winn...
Path Finder is a file browser that combines the familiar Finder interface with the powerful utilities and innovative features. Just a small selection of the Path Finder 6 feature set: Dual pane... Read more
QuarkXPress 10.2.1 - Desktop publishing...
With QuarkXPress, you can communicate in all the ways you need to -- and always look professional -- in print and digital media, all in a single tool. Features include: Easy to Use -- QuarkXPress is... Read more
Skype 6.19.0.450 - Voice-over-internet p...
Skype allows you to talk to friends, family and co-workers across the Internet without the inconvenience of long distance telephone charges. Using peer-to-peer data transmission technology, Skype... Read more
VueScan 9.4.41 - Scanner software with a...
VueScan is a scanning program that works with most high-quality flatbed and film scanners to produce scans that have excellent color fidelity and color balance. VueScan is easy to use, and has... Read more
Cloud 3.0.0 - File sharing from your men...
Cloud is simple file sharing for the Mac. Drag a file from your Mac to the CloudApp icon in the menubar and we take care of the rest. A link to the file will automatically be copied to your clipboard... Read more
LibreOffice 4.3.1.2 - Free Open Source o...
LibreOffice is an office suite (word processor, spreadsheet, presentations, drawing tool) compatible with other major office suites. The Document Foundation is coordinating development and... Read more
SlingPlayer Plugin 3.3.20.505 - Browser...
SlingPlayer is the screen interface software that works hand-in-hand with the hardware inside the Slingbox to make your TV viewing experience just like that at home. It features an array of... Read more
Get Lyrical 3.8 - Auto-magically adds ly...
Get Lyrical auto-magically add lyrics to songs in iTunes. You can choose either a selection of tracks, or the current track. Or turn on "Active Tagging" to get lyrics for songs as you play them.... Read more

Latest Forum Discussions

See All

Rhonna Designs Magic (Photography)
Rhonna Designs Magic 1.0 Device: iOS Universal Category: Photography Price: $1.99, Version: 1.0 (iTunes) Description: Want to sprinkle *magic* on your photos? With RD Magic, you can add colors, filters, light leaks, bokeh, edges,... | Read more »
This Week at 148Apps: August 25-29, 2014
Shiny Happy App Reviews   | Read more »
Qube Kingdom – Tips, Tricks, Strategies,...
Qube Kingdom is a tower defense game from DeNA. You rally your troops – magicians, archers, knights, barbarians, and others – and fight against an evil menace looking to dominate your kingdom of tiny squares. Planning a war isn’t easy, so here are a... | Read more »
Qube Kingdom Review
Qube Kingdom Review By Nadia Oxford on August 29th, 2014 Our Rating: :: KIND OF A SQUARE KINGDOMUniversal App - Designed for iPhone and iPad Qube Kingdom has cute visuals, but it’s a pretty basic tower defense game at heart.   | Read more »
Fire in the Hole Review
Fire in the Hole Review By Rob Thomas on August 29th, 2014 Our Rating: :: WALK THE PLANKUniversal App - Designed for iPhone and iPad Seafoam’s Fire in the Hole looks like a bright, 8-bit throwback, but there’s not enough booty to... | Read more »
Alien Creeps TD is Now Available Worldwi...
Alien Creeps TD is Now Available Worldwide Posted by Ellis Spice on August 29th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Dodo Master Review
Dodo Master Review By Jordan Minor on August 29th, 2014 Our Rating: :: NEST EGGiPad Only App - Designed for the iPad Dodo Master is tough but fair, and that’s what makes it a joy to play.   | Read more »
Motorsport Manager Review
Motorsport Manager Review By Lee Hamlet on August 29th, 2014 Our Rating: :: MARVELOUS MANAGEMENTUniversal App - Designed for iPhone and iPad Despite its depth and sense of tactical freedom, Motorsport Manager is one of the most... | Read more »
Motorsport Manager – Beginner Tips, Tric...
The world of Motorsport management can be an unforgiving and merciless one, so to help with some of the stress that comes with running a successful race team, here are a few hints and tips to leave your opponents in the dust. | Read more »
CalPal Update Brings the App to 2.0, Add...
CalPal Update Brings the App to 2.0, Adds Lots of New Stuff Posted by Ellis Spice on August 29th, 2014 [ permalink ] | Read more »

Price Scanner via MacPrices.net

Are We Now In The Post-Post-PC Era?
A longtime and thoroughgoing laptop aficionado, I was more than a little dismayed by Steve Jobs’s declaration back in 2010 when he sprang the iPad on an unsuspecting world. that we’d entered a “post-... Read more
Apple now offering refurbished 21-inch 1.4GHz...
The Apple Store is now offering Apple Certified Refurbished 21″ 1.4GHz iMacs for $929 including free shipping plus Apple’s standard one-year warranty. Their price is $170 off the cost of new models,... Read more
Save $50 on the 2.5GHz Mac mini, on sale for...
B&H Photo has the 2.5GHz Mac mini on sale for $549.99 including free shipping. That’s $50 off MSRP, and B&H will also include a free copy of Parallels Desktop software. NY sales tax only. Read more
Save up to $300 on an iMac with Apple refurbi...
The Apple Store has Apple Certified Refurbished iMacs available for up to $300 off the cost of new models. Apple’s one-year warranty is standard, and shipping is free. These are the best prices on... Read more
The Rise of Phablets
Carlisle & Gallagher Consulting Group, a businesses and technology consulting firm focused solely on the financial services industry, has released an infographic depicting the convergence of... Read more
Bad Driver Database App Allows Good Drivers t...
Bad Driver Database 1.4 by Facile Group is a new iOS and Android app that lets users instantly input and see how many times a careless, reckless or just plain stupid driver has been added to the... Read more
Eddy – Cloud Music Player for iPhone/iPad Fre...
Ukraine based CapableBits announces the release of Eddy, its tiny, but smart and powerful cloud music player for iPhone and iPad that allows users to stream or download music directly from cloud... Read more
A&D Medical Launches Its WellnessConnecte...
For consumers and the healthcare providers and loved ones who care for them, A&D Medical, a leader in connected health and biometric measurement devices and services, has launched its... Read more
Anand Lal Shimpi Retires From AnandTech
Anand Lal Shimpi, whose AnandTech Website is famous for its meticulously detailed and thoroughgoing reviews and analysis, is packing it in. Lal Shimpi, who founded the tech site at age 14 in 1997,... Read more
2.5GHz Mac mini, Apple refurbished, in stock...
The Apple Store has Apple Certified Refurbished 2.5GHz Mac minis available for $509, $90 off MSRP. Apple’s one-year warranty is included, and shipping is free. Read more

Jobs Board

*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
Senior Event Manager, *Apple* Retail Market...
…This senior level position is responsible for leading and imagining the Apple Retail Team's global event strategy. Delivering an overarching brand story; in-store, Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.