Appliance Design - January 2008 - (Page 38)

MOTORS lar to the motor axis, pointing directly at the rotor magnet. The Powder Keg motor magnetic circuit is three-dimensional, whereas laminated steel is uni-dimensional. The three-dimensional approach takes full advantage of the isotropic magnetic properties of SMC (Soft Magnetic Composite) material such as Hoganas’ Somaloy™ 700 (5). The SMC vertical stator structure is isotropic; its flux passes in all directions. The vertical structure uses bobbin-wound coils, provides multiple rotor magnet configuration options, and has an interior available for load functions such as gear heads or electronics. Fig. 4 illustrates a vertical SMC stator compared to a laminated stator. The windings of the vertical structure are wound on bobbins and placed on the stator poles. On a laminated stator, the winding is usually placed directly on the insulated iron poles, which is a much slower and complex operation with lower yields. Appliance motors A motor system that combines SingleSense, BUD and Powder Keg technologies provides a lower cost and a smaller Fig. 7B. Prototype of new evaporator fan motor assembly using a Powder Keg motor that does not restrict air flow. Fig. 7A. Powder Keg motor (black) replaced radial motor (white) in refrigerator evaporator fan assembly. • • Sales turnover 2006, more than 34 Million Euro, 45% of which for export. Applications: 55% Automotive water pumps, 20% Household, appliances pumps, 25% light Industrial submersible and agriculture pumps. Quality System Certied from TÜV according to ISO/TS16949 and ISO 14001 specication. Collaboration with Universities and Research Center for sliding face materials, and pumps uido-dynamics analisys. • • MeccanotecnicaUmbra S.p.A. Via G. Agnelli, 7 - 06042 Campello sul Clitunno (PG) ITALY Phone +39 0743 279.1 - Fax +39 0743 279242 e-mail: meccano@meccanotecnica.it www.meccanotecnica.it For more Information Enter 113 AD01084Mecca.indd 1 38 applianceDESIGN January 2008 12/4/07 10:50:22 AM www.applianceDESIGN.com http://www.meccanotecnica.it http://www.meccanotecnica.it http://www.appliancedesign.com

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Appliance Design - January 2008 Contents Editorial Shipments/Forecasts News Watch Makers of Commercial Refrigeration Equipment Turn to Variable-Speed Motors to Improve Energy Efficiency. New Motor Design and Control Scheme Makes Brushless Motors More Economically Feasible for a Wider Range of Applications. External Gas Molding, a Relatively New Technique, Solves Many of the Challenges Associated with the Injection Molding of Large Plastic Parts. Plastic Housings Offer Many Benefits: EMI Protection Isn't One of Them. But, New Materials and Techniques are Solving that Problem. Choosing the Optimal Strategy for Effective EMI Shielding Depends on Both Mechanical and Electrical Requirements Ethernet-Enabled Microcontroller Makes Networking Schemes Easier and More Cost Effective to Implement The Ever-Changing Array of Microcontroller Memory Options Makes it Imperative to Keep Abreast of What's Available to Determine the Optimal Choice for an Application. A Vast Range of Components and Finished Products will be Exhibited at the Country's Preeminent HVAC/R Show, AHR Expo, which is Scheduled for Jan. 22-24 in New York. Advertiser's Index Association Report: PRBA

Appliance Design - January 2008

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