ALTROCONSUMO LAVATRICI PDF

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Qualche vantaggio comunque c: We initially conducted an analysis of the available durability standards and procedures both conventional and accelerated to test products and components. If the load cannot be equally distributed, as it was with the fixed imbalanced load adopted in these tests, the control procedure may either limit the mechanical stress to the structure by reducing the spinning profile especially by reducing the highest spin speed and its duration or decide to try to redistribute the textile load.

Short and long tail.

Towards a durability test for washing-machines

It seems that the spinning in runs 2—6 is somehow truncated due to problems of imbalance. Duration and spin speed are measured during each spinning cycle.

With these conditions, it appears that the attempt to induce certain stress on a WM by carrying out a high number of pure spinning cycles with a fixed imbalanced load does not allow having equal testing conditions.

A higher friction of cold dampers might explain this. Spinning at a high speed appeared to be the most stressful part of a washing programme for a horizontal axis WM, therefore, weak points in the mechanical design of such machines may be identified through a series of spinning cycles.

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Correct processing of non-existing pages? Rubber plates have been used during the spinning cycles to mimic a constant imbalance. Garantiamo spedizioni veloci, sempre. The meta description should be between and characters. Author information Article notes Copyright and License information Disclaimer. Any failure or deterioration of the WM is monitored during the test. Similar conclusions were also drawn for other products groups: Inline css will slow down the rendering of the website.

Aligned with relevant literature, the durability test includes the execution of spinning cycles, run in series on the same machine. This work also has the potential to trigger activities to develop vertical standards on specific product groups, which could, hence, be used in the next reviews of Ecodesign regulations for the WM product group.

Regular gaps between the data indicate the execution of one washing cycle every spinning cycles.

The research method consisted of an analysis of available durability standards and procedures to test products and components, followed by an analysis of relevant references related to frequent failures. Spin speed profiles of WM A, recorded during the extra spinning programme for various fixed imbalanced weights. Table 1 Remaining moisture content RMC of the six washing cycles. Even though different sources estimated lower user rates Kruschwitz et al.

As lifetime expectancy tests are often long-lasting and unfeasible, durability performance can be assessed through accelerated tests. Several reasons can be adduced for this tendency, such as technology innovations, legislation changes, consumer choices, market trends and obsolescence. Moreover, it would have the advantage of mimicking actual stress conditions, as the stress is coming from real scenarios.

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Starting from a literature review focused on durability tests and dynamics of horizontal axis WMs Section 2the proposed method is introduced in chapter 3 and results are presented in Section 4with two WM case studies.

In the present article, the authors focused on the WM product group, as there are opportunities to implement durability-related requirements within the framework of the Ecodesign Directive Tecchio et al. Indeed, the declared highest spin speed is reached in just one of the six washing cycles run 1 in Fig.

However, the drum imbalance is normally regulated by the electronic control unit or control procedure during the actual use, which stops the washing cycles if it exceeds a threshold value decided by the manufacturer. Typically, a control procedure for imbalanced conditions influences the distribution of the textile load before the beginning of the spinning function.

Towards a durability test for washing-machines

Lelenco degli svantaggi ancora lungo, ma anche solo questo basta a far riflettere su come il 3D sia oggi una tecnologia ancora immatura e carente.

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Therefore, the way used most is to utilise information that is already available, namely the speed of the motor driving the drum, as it is used to control the speed of the drum.