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Manisa, Turkey

Koruk H.,Istanbul University | Arisoy A.,Technical University of Istanbul | Bilgin N.,INDESIT Company
Journal of Vibroengineering | Year: 2014

The flow noise in household refrigerators is quantified in this study. First, the sound pressure measurements in a quiet room using typical household refrigerators are conducted and the noise characteristics of the refrigerators are presented. Then, the flow noise in household refrigerators is quantified using the results of the overall analysis and Fourier transform of the measured sound pressure data. After that, the flow noise in household refrigerators is quantified using the sound pressure measurements conducted using a specially designed test rig. The frequency characteristics of the flow noise in household refrigerators are also explored and the contribution of the flow noise is identified. © JVE INTERNATIONAL LTD. JOURNAL OF VIBROENGINEERING.

Indesit Company | Date: 2013-12-27

Spraying device for washing machine, in particular a dishwasher, comprising an impeller provided with blades on the upper part as to receive an axial flow of a washing fluid and to deviate said flow in substantially radial direction, a lower cage defining a containment compartment having an upper access opening for the insertion of the impeller, and an upper closing cover, firmly applicable superiorly on the top of the cage to close the containing compartment.

Ferrise F.,Polytechnic of Milan | Graziosi S.,Polytechnic of Milan | Phillips Furtado G.,Polytechnic of Milan | Bordegoni M.,Polytechnic of Milan | Bongini D.,INDESIT Company
Computer-Aided Design and Applications | Year: 2013

The paper describes the results of an on-going research activity whose aim is to allow companies, operating in the consumer goods market, to design the multisensory experience of their products. In case of the household appliances market, which is the research context of this study, the user experience derives from the interaction with specific product features such as the door, buttons, and drawers. Designing a good multisensory experience is complex since it means taking into account a combination of visual, hearing and haptic feedbacks a user perceives when interacting with the product. Virtual Reality offers the technologies to design and test that experience thought virtual prototypes, even if to date there is a lack of methodological approaches to practically guide and support this design activity. Relying on the results of previous authors' researches, the paper describes further methodological advances focused on making usable the proposed approach in the current design practice. The case study chosen to demonstrate the effectiveness of the method is a dishwasher door and the paper describes how to re-engineer the haptic feedback of a commercial model in order to make it more perceptually appealing at the moment of purchase. © 2013 CAD Solutions, LLC.

Koruk H.,Technical University of Istanbul | Belek H.T.,Technical University of Istanbul | Alparslan M.,EDA Inc. | Bilgin N.,INDESIT Company | And 3 more authors.
41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012 | Year: 2012

In this paper, a benchmarking study on the refrigerator noises is conducted through a large number of vibration and acoustics measurements on four prototype refrigerators and on their substructures. Solutions are recommended to improve acoustic and vibration performances of these refrigerators. The study is conducted in four phases. In the first phase, vibrations measurements are performed on the critical locations on refrigerators in order to identify the main sources and the propagation paths of vibration. In the second phase, frequency response functions are measured on some substructures of refrigerators in order to determine modal parameters so as to assess the performance of the components. In the third phase, noise contribution due to structural vibrations is investigated by performing and analyzing the measurements of sound pressure and acceleration levels on the substructures with modified boundary conditions. In the fourth phase, sound power measurements on the prototypes are made in a semi-anechoic chamber and sound intensity maps are generated in a modified laboratory environment for identification of noise sources. Finally, all the results are evaluated, important findings are summarized and some recommendations are made for improving the vibro-acoustic performance.

Lepore E.,Polytechnic University of Turin | Faraldi P.,INDESIT Company | Bongini D.,INDESIT Company | Boarino L.,National Institute of Metrological Research | And 3 more authors.
Composites Part B: Engineering | Year: 2012

This paper shows the effects on wettability of plasma and thermoforming treatments on 14 different polystyrene (PS) surfaces, with a comparison with a lotus leaf. Quantitative roughness analyses of PS surfaces and lotus leaf, by three-dimensional optical profilometer and scanning electron microscope, have been carried out. We characterized the water drop sliding by measuring the contact angle, sliding angle, sliding volume and sliding speed. A relevant correlation between technological treatment, surface roughness parameters and wetting measurements clearly emerges, suggesting the plasma/thermoforming treatment as a process for enhancing the hydrophilic/hydrophobic behavior of PS surfaces. Determination of the static and resistant forces of the drop sliding on the surfaces concludes the paper. © 2011 Elsevier Ltd. All rights reserved.

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