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Ultrasonic washing machine

The introduction of advanced energy-saving technologies brought to the forefront of progress the new device domestic purposes - Ultrasonic ultrasound ustroystvo.Stirka erasing occurs due to periodic formation of the bulk liquid compression-expansion waves that occur in virtually incompressible medium - water. Linen placed in a liquid is subjected to intensive hydroacoustic impact. Hydroacoustic waves initiate the microscopic appearance of gas bubbles that contribute to the separation of dirt microparticles volume of laundry. In the formation and subsequent collapse (destruction) of the gas bubbles formed ozone sterilizing linen. In some cases, when high energy ultrasonic vibrations, can be observed sonoluminescence - the glow of fluids, especially noticeable in a darkened room.

The advantage of washing using ultrasonic vibrations is that underwear is not deformed, no mechanical wear and tear. You can even wash woolen products, and fine linen. In addition to washing and disinfecting the laundry, can be processed fruits and vegetables, intended for conservation decontaminated water.

Appeared on the market ultrasonic washing device [1] (UZSU) of "Bionics" is a compact electrical device weighing 200 g "Bionics" is made up of a network adapter - power supply and proper UZSU. The device itself in order to preserve the "know-how" encapsulated, and a description of its concept and is not important for playback characteristics. However, having obtained by measuring and analyzing device modes secondary characteristics, can present one of the possible schemes UZSU as follows (Figure 1).

UZSU consists of a power supply (DA1 chip), two interconnected generators operating at frequencies of 10 kHz and 1 MHz (DD1 chip), the output stage transistor VT1 and activator-emitter connected to points C and D devices. The power supply is made in the prototype unregulated, calculated on the maximum power consumed by the network - 3 watts, which is enough to wash the laundry in the volume of fluid 10 ... 25 liters. It seems more appropriate to ensure UZSU continuously adjustable output power. Figure 1 in the gap between the points A and B included an adjustable source of stabilized DC (25 ... 1000 mA). Figure 2 shows a diagram of a regulated power supply (5 ... 13). Packet Generator impulses executed by traditional pattern on the chip DD1 and has no singularities. The values ​​of the elements RC-frequency part of the generator can be adjusted when adjusting the frequency in resonance with the frequency of the ultrasonic transmitter-activator. DA1 and chip transistor VT1 must be installed on the heat sink plates.

The most problematic in a practical implementation choice UZSU ultrasonic transducer and activator ensuring its sealing while achieving maximum benefit ultrasound energy into the environment (fluid). Typically, the ultrasound transducer used piezoceramic - barium titanate, strontium, radiators on ferrite or permalloy cores, Quartz crystal plate (Figure 3) [2-4], which opens up a wide field for experiment. One of the interesting options for obtaining the ultrasonic vibration is simply the transmission of electrical current pulses through the water with the use of closely spaced electrode system connected to points A and B devices. The periodic passage of current pulses between the electrodes will cause acoustic elektrostimulirovannuyu modulation solution. The electrodes can be recommended as aluminum or graphite. When washing reliable isolation from the mains supply must be ensured. Washing tank (bucket pelvis) must be removed from the grounded object and mounted on a dry floor. Acoustic vibrations in the erasure solution can be excited in the audio frequency range. Experiments have shown that the washing takes place under such conditions as compared with an acceptable result with the prior art.

Features washing with UZSU - in erasing the same solution was poured erasing powder as hand-washing, the water temperature should be about 65 ° C. Linen should float freely in solution, occasionally it should stir a wooden tongs. Heavily soiled areas of laundry soap is recommended further. washing process lasts for 30 ... 40 minutes or more (depending on the efficiency of the ultrasonic activator). Rinse the laundry is possible and using UZSU. It should be noted that the experience of optimal use UZSU appears after a few washes.

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