The ultrasonic dishwasher represents a significant advancement in cleaning technology, particularly for Chinese tableware. This paper explores the principle and characteristics of ultrasonic dishwashing, along with experimental research conducted to evaluate its effectiveness. The results show that ultrasonic cleaning achieves high cleanliness without leaving any uncleaned areas, making it especially suitable for deep bowls commonly used in Chinese cuisine.
The development of dishwashers began in Europe and America. In 1929, Miller 16 introduced the first electric household dishwasher in Europe, though it was still relatively simple and not well integrated into home environments. By 1954, the United States launched the first electric desktop dishwasher, improving both performance and design. In 1978, Miller created the world’s first microcomputer-controlled dishwasher, enhancing user interaction and making the appliance more household-friendly. Over time, dishwashers became common in Western homes.
In Asia, Japan was among the first to develop advanced dishwashers. By the late 1990s, companies like Panasonic, Toshiba, and Others introduced fully automatic desktop models. Meanwhile, European and American manufacturers refined their designs, turning dishwashers into stylish kitchen appliances.
In China, the first fully automatic cabinet dishwasher was introduced by Little Swan in 1998. Since then, other brands such as Haiermei have also entered the market. However, traditional dishwashers, designed for Western flat plates, struggled to meet the needs of Chinese users who often use deep bowls and face greasy, sticky residues from fried or steamed dishes.
This is where ultrasonic dishwashers come into play. They utilize high-frequency sound waves to create cavitation bubbles in water. These bubbles expand and collapse rapidly, generating shockwaves that dislodge dirt and grease from surfaces. Unlike traditional dishwashers, which rely on mechanical spraying and high-pressure water, ultrasonic models clean without moving parts, resulting in lower energy consumption, reduced noise, and a simpler design.
Ultrasonic dishwashers offer several advantages over conventional models. First, they are energy-efficient and quiet due to the absence of pumps and rotating arms. Second, their simplified structure reduces the likelihood of breakdowns, making maintenance easier. Third, they do not require special detergents, although some may be added for extra cleaning power. Finally, they are ideal for cleaning Chinese tableware, as ultrasonic waves can reach every corner of deep bowls and pots, eliminating dead zones.
Despite these benefits, the Chinese dishwasher market has faced challenges. Traditional dishwashers were not well-suited for Chinese food styles, leading to poor adoption. Issues such as long washing times, high water usage, and the need for specialized detergents further limited their appeal. Additionally, high production costs kept prices elevated.
However, the potential for growth remains strong. According to a 2001 report by the National Information Center, dishwashers were becoming increasingly popular among urban residents, with a purchase intention rate of 26.7%. In contrast, Western countries like France and Germany have achieved dishwasher penetration rates of 60–70%, showing room for improvement in China.
Experiments conducted on ultrasonic dishwashers have confirmed their effectiveness. In one test, oily bowls and cups were cleaned thoroughly in just 30 minutes using only tap water and a small amount of regular detergent. Another test showed that even long-worn enamel cups could be restored to a near-new condition through ultrasonic cleaning.
A patented model, 02277202.2, features dishwashing, disinfection, drying, and storage functions, all controlled automatically. It uses high-temperature sterilization and ozone purification, ensuring hygiene. With a power consumption of less than 1.2 kWh and water usage under 100 liters, it offers excellent value for money.
In conclusion, ultrasonic dishwashers provide a revolutionary solution for cleaning Chinese tableware. Their efficiency, ease of use, and adaptability make them a promising product for the growing market. As awareness increases, the ultrasonic dishwasher has the potential to transform the industry, bringing convenience and cleanliness to households across China and beyond.
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