An example IGES file of a new impeller design created by FanCon (Size: 120mm x 120mmx 25mm)

Search Keywords: “FanCon“, “Fan Constructor“, “Fan Design“, “Axial Fan“

Below is an example of the IGES file of a 12025 axial fan created by FanCon. As introduced in another post of this blog that such a new design can be easily accomplished within a couple of minutes. To show you the flexibility of FanCon, we randomly create this impeller with different foils for each of the five sections. As shown below in the contents of the email auto-created by FanCon, the names of the foils are  A18-(original，CLARK-Z.，BE6456F，CSS，Benedek-8353-B-2 respectively. The stagger angles, forward angles, upward distances and the scales of each section are also randomly picked to show the flexibility of parameter selection.

The contents of the email body auto-created by FanCon is shown below in blue.

Hello, Here I have a new impeller design from Fan Constructor as below.

Impeller name: 12025

Number of blades: 11

Outer Diameter: 120mm

Hub Diameter: 30mm

Fan Depth: 25mm

Chord Center Offset: 0mm

Foil name of each section:

[#0: A18-(original).]; [#1: CLARK-Z.]; [#2: BE6456F.]; [#3: CSS.]; [#4: Benedek-8353-B-2.];

Stagger angle of each section (in degree):

[#0: 45Degrees];[#1: 26Degrees];[#2: 30Degrees];[#3: 37Degrees];

Forward angle of each section (in degree):

[#0: 0Degrees];[#1: -13Degrees];[#2: -20Degrees];[#3: -8Degrees];

Upward distance of each section (in millimeter):

[#0: 0mm];[#1: -5mm];[#2: -3mm];[#3: -1mm];

Scale of each section:

[#0: 0.24086];[#1: 0.28540];[#2: 0.32990];[#3: 0.3744];[#4: 0.4189];

Sent from my iPhone

Here are some screenshots of the final impeller for your reference.

Should you want to inspect and analyze this impeller in more details, please kindly download this IGES file from the link below.  You are also welcome to use the surfaces of this impeller for your design.

http://www.badongo.com/file/26872891

RDHx Toolbox Lite (Available at App Store)

Search Keywords: "RDHx", "Rear Door", "Heat Exchanger"

We are pleased to announce that a new iPhone App "RDHx Toolbox" is now available for download from the iPhone App Store.

The purpose of this App is to provide people who are interested in RDHx with more information on the products and a tool which facilitates the calculations of different units.

RDHx Toolbox contains technical specifications of RDHx including the general specifications and the physical specifications of the available models. A unit conversion tool is also included to facilitate the conversions between metric and imperial units of Area, Flowrate, Heatload, Length, Pressure, Weight, Temperature and Volume. This toolbox can help you determine the exact design requirements and quickly find the exact RDHx model you need.

From the navigation bar to the bottom of the screen, the user can tap on either the RDHx Specs,  the Unit Conversion or the search function. The table view of RDHx Specs contains a table of various RDHx models in which the user can tap to selection and learn more information. The information of general and  physical specifications is on the next page.




After the user tap on the Unit conversion on the base navigation bar. The next page shows eight difference units for conversion. When you tap into any of the units, you will enter a page with a segmented selection bar to the top of the screen. From here you can select the exact unit you want to convert from and input the numbers by adjusting the picker to the top of the navigation bar. The converted results will be shown on the text box in the middle.




The "Search" page provides the user with the search function to find out the best suitable RDHx product for a specific criterion. The user can easily select the width, height, depth, vendor and model number of the racks on which the RDHx will be mount. The recommended solution model will be shown under the item "Solution". For those various solution models already available, the use can simply tap on the "model" segmented control and no only the recommended solution model but also the corresponding width, height, depth and vendor will be shown. This provides the user with an alternative way to check the those RDHx already available.



Note:
RDHx is a product designed and manufactured by Vette Corp under a registered trademark as "Coolcentric" which is a Division of Vette Corp as well. All trademarks are property of their owners.

RDHx Toolbox is available in four different languages including English, Japanese, Traditional Chinese and Simplified Chinese.

"Fan Constructor" available in iPhone APP Store

Search Keywords: "FanCon", “Fan Design“, “Fan Constructor“, “Axial Fan“

We are pleased to announce that a new iPhone App "FanCon" is now available for download from the iPhone App Store.

The purpose of this App is to provide people who are interested in the impeller design with a easier way to accomplish the product design and a tool which facilitates and simplifies the design process.

FanCon contains a foil database which has 200 different foils at your selection and the user can add another 100 foils to this database as well. This provides the user with more flexibility and variations to the impeller design which needs an optimization process to determine the best impeller with the optimal performace, better noise characteristics and etc.. All the design parameters such as geometry gettings of the overall impeller and the detail design parameters of each section can be easily adjusted by the slider bars or text fields on the screen of iPhone/iPad devices.

From the navigation bar to the bottom of the screen, the user can tap on either the Foil Database, Geometry Settings, Section Design or the Final Impeller. The table view of  Foil Database contains a table of various foils as described above in which the user can tap to select or edit. The detail specification of the foil such as the X, Y coordinates, maximum thickness, the distance from the leading edge of the maximum thickness are listed inside the detailed view of each foil. A foil is drawn in the figure of a blue background to show the user how this foil looks.

After the user tap on the “Geomery“ on the base navigation bar,  the next page shows the basic geometry settings of the new impeller. This includes the number of blades, the outer diameter (tip diameter), the hub diameter, the fan depth and the chord center offset along the axis. When you tap into the button to the upper right corner with an impeller figure, you will enter a page with an impeller rotating in random directions. From here you can see four of the parameters mentioned above marked in different colors as dimension lines. The users will understand better about the meaning of each of the terms.

After the user complete the settings inside the “Geometry“ page, the next step is to adjust the various settings on the five sections to compose a single blade. Therefore, the user can tap on the third “Section“ icon and this will bring he/she into the detailed section settings. Same as the “Geometry“ page, there are slider bars and text fields inside this “Section“ page which can facilitate the input of various numbers. The user can adjust the first parameter to determine which one of the 5 sections he/she wants to edit. After such selection of sections, all the slider bars and text fields below will change the values to reflect current settings of each section. Meanwhile, 5 foils will appear in the background of this page and each represent one foil in the corresponding section. This current foil being edited will be shown in yellow which makes the user easier to recognize. The user can tap on the icon with a impeller figure to the upper right of this page and this will bring out another page which shows the sections in the top view. This makes the user easier to understand some parameters such as forward angles which may not be easy enough to recognize the changes in the previous view. 

Finally, after all the settings complete in “Geometry“ and “Section“ pages, the user can move on the the “Final Impeller“ page. To the upper right of this page, the user can tap on an icon with the impeller figure to see the final impeller in 3D. The impeller keeps rotating randomly until the user tap or swipe on the screen. The user can verify the design to see if he/she needs further modification. 

If the user is satisfied witht such design, he/she can tape on the “Final Impeller“ button to return to the “Final Impeller“ page. From this page, the user can determine whether he/she wants to spend USD$4.99 to export the final IGES file to others. 

Should he/she tap on the “Export IGES File and Send Email / US$4.99“ button, an In-App Purchase transaction is processed. After transaction confirmation from Apple, the IGES file will be prepared inside an email sheet as an attachedment. All the design parameters are listed as the content of such email and the user can easily send this email out by tapping on the “Send“ button.

Whenever any design is too complicated and it may not be easy to pick the correct parameters easily, the user can simply tap on the “Revert to Default Values“ button. All the design parameters will be reverted to the default values immediately and the user can continue the design work again with ease.

FanCon is available in three different languages including English, Traditional Chinese and Simplified Chinese.

What is Fan Constructor?

Search Keywords: "FanCon", “Fan Design“, “Fan Constructor“, “Axial Fan“

 
Axial fans are predominantly used in the IT industry for the purpose of moving the heat along with the hot air out of the system. The rotation is along the axial direction and air flow is generated by the collision of particles on the moving blade surface. Compared with centrifugal fans, the distinguishing feature of axial fans is the relatively larger flow rate. This makes axial fans extremely popular for the applications of system-level cooling and ventilation in personal computers and other IT devices. The trend toward an axial fan of higher performance and lower noise level drives the fan manufacturers into a new era of prompt and continual renovation on current products. Therefore, it becomes a great challenge for the manufacturers to shrink the design period and reduce the time for trial-and-error.

However, even for an experienced engineer, the choice of various design parameters of an axial fan is never an easy job. The performance is affected by the parameters such as the hub diameter, span, number of blades, chord length, pitch length, chamber angle, stagger angle, flow angle at inlet, flow angle at outlet, incidence angle, glide angle, forward angle and upward and downward distances. 

Numerous studies are performed on the effect of the chamber angle, stagger angel, incidence angle and flow angles at inlet and outlet on the lift and drag coefficients. However, almost all the studies are on 2-dimensional airfoils rather than the much more complicated 3-dimensional impellers. Until now, no valid correlation between 2D airfoils and 3D impellers could be found among those studies. Practically, engineers need to import the point data of the 2D airfoils into the commercial 3D CAD software, adjust the scales and angles on each projection to the cylinders, generate the top and bottom blade surfaces by connecting all the points together. This is really a great effort which takes lots of time and can never be accomplished by those who are fresh to this industry. Though some programs for impeller generation indeed exist, the number of available default airfoil point data is less than ten and the operation for the adjustment of chamber angle, stagger angle, etc. This is never as user-friendly as typical commercial software. Due to the above-mentioned limitations, the variability of generated impellers is rather limited and only minor improvement can be obtained with these programs.

Fan Constructor (or FanCon in brief) is a brand new innovation for the generation of 3-dimensional impellers. With the popular iPhone/iPad devices , any modification on the design parameters can be immediately displayed on the screen and the dynamic rotation of the impeller generated can provide the customer with a lifelike feeling of a real fan in operation. With the user-friendly features available for iPhone/iPad devices, all the design parameters can be easily adjusted with your fingers and it works as an excellent tool to display the design concept to the customers. All the parameters inside Fan Constructor can be easily adjusted by individual slider bars and text fields, and the user can immediately observe the change in appearance in impeller window.  The resulting impeller will be saved as the files of IGES type which is one of the most popular 3-dimensional geometry file formats. Such IGES file will be within an email as an attachment and the user can directly send such IGES file out to others for further review. Therefore, this means any works done in Fan Constructor can be readily accessed by other kinds of software for numerical analysis or NC machining to obtain the simulation or actual test results.

All in all, a senior engineer can focus him/herself on the development of better impellers with the established experiences without wasting too mush time on the adjustment of the foil geometry or the construction of solid geometry files in CAD systems. This way the company can be more competitive than others because of the shorter time for development. For those who are fresh to this industry or don’t have mush practical experience, Fan Constructor works as a perfect tool for the education and training from the basics of foil selection, impeller adjustment to the advanced skill of manipulating sections. As a result, a freshman can become a skilled person in fan designing within a very short period and a senior engineer can develop most advanced and sophisticated fan models as never before.