The Procedure for Reduction of the Acoustic Performance Level of the Spinning Cycle in the Washing Machine

Abstract

The development of automatic washing machines and their gradual upgrade of already sold models is a very challenging task, mainly due to the changing operating conditions of the washing and subsequent spinning cycle. Increasing demands of consumers to buy the appliance constantly force manufacturers to continually innovate and improve their products to be able to succeed in the enormous competition. The trend for the centrifuging cycle lies in continual spin increase, resulting in greater forces and thus load on the overall machine construction. In general, it is known that with increasing spins more water is removed from the laundry. This is a significant benefit for the consumer as the drying time of the laundry is considerably shortened. However, the increase in spins can also bring the negative phenomena. One of them is a louder noise of the washing machine. Therefore, it is necessary to continually improve the procedures that can reduce the noise. For their correct design, experiments have been carried out. They have consisted of the measurement of the declaration, technical and subsequent measurement using an acoustic camera. Its using will determine the proportion of acoustic energy spread from individual construction components. These measurements and simulations will be used to set engineer theories so that it can be possible to transform the appliance, resulting in an effective reduction of the acoustic performance level. The theories will be verified by subsequent stated measurements and compared with the original values.