On the development trend of global washing machine

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Talking about the development trend of global washing machine technology

since Hamilton Smith invented the first hand-operated washing machine in 1858, the power and internal washing structure of the washing machine have been developing and evolving, and gradually formed roller type, wave wheel type and mixing type products, which have been spread to this day. Among them, the two factors from social demand (energy efficiency, regulations and standards) and market demand (consumption, health and convenience) promote the continuous development of washing machine technology

enterprises in various countries are increasingly competitive in washing machine technology. In the Chinese market, the intelligent application of washing machines is relatively prominent, the technology gradually returns to the nature of products, and the cost-effective products are popular. In the European market, the performance requirements for water and electricity saving of washing machines are becoming increasingly stringent, and the relevant energy efficiency labeling directives are constantly upgraded and evolved. In the North American market, large capacity washing machines with a capacity of more than 12kg have always been the focus of competition among major manufacturers. Whirlpool, LG, Samsung, Haier and other enterprises continue to innovate in technology and seize the highland. It will affect the exertion of LED advantages. Look at the Japanese and Korean markets. Local brands (Panasonic, Samsung, LG, etc.) occupy an absolute share, with fashionable functions, continuous innovation and leading the development trend of washing machine technology. In addition, the vast developing country market still has great potential to be tapped, which will lead the global washing machine market to show a differentiated development trend

the emerging technologies in the washing machine market can be broadly classified into two categories, namely, generic technologies and specialized technologies. Common technologies include intelligence, new materials, simulation, reliability and manufacturing, while specialized technologies include motors, sensors, sensing, vibration and noise reduction, energy and water conservation, etc. In view of the development trend of these technologies, the author makes the following prospects


at present, various intelligent components are gradually applied in washing machines, such as Wi Fi, touch screen, etc. typical intelligent applications such as automatic delivery and clothing recognition have been realized in some high-end washing machines. At the same time, a hundred schools of thought contend for intelligent home appliance control systems, such as Haier u+, bossy home connect, Samsung Bixby home, etc., but the existing functions are mainly remote control. From the perspective of the development trend of intelligent technology in the future, the low cost of relevant intelligent components and compatible and unified intelligent home appliance control system are the primary breakthrough directions. By using a variety of control terminals, such as intelligent, intelligent speakers, etc., we can finally achieve a washing machine that can continuously reduce the stress that metal can bear and is equipped with "Ai" technology

new materials

at present, the appearance of washing machines is still dominated by traditional colors, such as white, silver, etc., and the fashion and personalization of appearance materials are still insufficient. At the same time, the performance of functional materials (antibacterial, strength and corrosion resistance) is not high, and the product packaging material resources are wasted. In the future, with the introduction of various new material technologies (such as multi-color mixed injection molding and nano coating), the product appearance will become colorful. In addition, the application of carbon fiber materials with light weight and high strength is also a trend. At the same time, materials with self-cleaning, sterilization, noise reduction and other functions will be widely used to enhance the added value of products. In addition, the application of higher performance antibacterial/anti-aging materials and environmental friendly packaging materials (recyclable and self degradable) will help to improve human living environment

simulation technology

in the field of washing machine product development, all mainstream enterprises apply various simulation technologies, including internal system multi-body dynamics, air duct system hydrodynamics, drop impact analysis and fatigue stress analysis. However, compared with aerospace and automotive industries, washing machine simulation technology started relatively late, and there is still a lot of room for development. From the perspective of the development law of simulation technology in the automotive industry, the simulation technology of washing machine products in the future still needs to be standardized and improved in terms of simulation system, and the confidence of various advanced simulation tasks needs to be improved, such as nonlinear simulation of rubber parts and shock absorbers of washing machines, joint simulation of multiple physical fields, fluid structure coupling of balance rings, magnetic, thermal and acoustic coupling analysis of motors, etc. In addition, with the iterative upgrading of commercial simulation software, various simulation optimization design problems still need to be solved


generally, the reliability verification of the whole and components of washing machine products still depends on tests, while there is no effective evaluation method for the reliability of product software at present. The relevant theories are personally felt by this enterprise. The respect, understanding and recognition system for entrepreneurs is still gradually improving. In the future, with the functional diversification and intelligent development of washing machines, the difficulty of product reliability assurance will increase exponentially. Therefore, the application of various advanced robust design methods, such as DFSS, will become more and more extensive. At the same time, the research on more effective detection and verification methods is rising day by day, and the research on product software evaluation methods will also be carried out synchronously

intelligent manufacturing technology

compared with advanced manufacturing industries such as automobiles, the manufacturing technology of the washing machine industry still lags behind. In countries and regions with relatively low labor costs, the washing machine product manufacturing line is dominated by labor. At present, with the development of industrial interconnection and other technologies, intelligent factories characterized by large-scale robot assembly are in the ascendant. In the future, emerging intelligent manufacturing technologies such as standardization, modularization and customization can not only meet the requirements of high quality, high reliability and efficient production of products, but also meet the needs of consumers for private customization

motor technology

the drive motors of traditional washing machines include unidirectional induction motors and series excitation motors. With the continuous development of motor technology, high-efficiency variable-frequency motor has gradually become the mainstream. Represented by permanent magnet brushless DC motor, the popularity has gradually increased and the growth trend is obvious. Looking forward to the future, low-cost brushless DC motor will be widely used. The topology of motor will be continuously optimized, the deep field weakening control technology will flourish, and the application of new permanent magnet materials will promote the variable-frequency motor to have high efficiency, high precision and low noise

sensor technology

at present, the types of sensors used in washing machines are relatively limited, and the available functions are also limited, such as water level, temperature and other sensing, but the accuracy is relatively low. At the same time, all kinds of new sensors (displacement and turbidity) are only used in a small number of high-end products. In the future, with the technological upgrading of various sensors, such as cloth sensor, humidity sensor, etc., the washing machine will obtain more accurate sensing parameters, making the functions of classified washing, stopping when clothes are dry and so on continuously improved. At the same time, the comprehensive application of various sensors will continue to derive new technologies, such as automatic delivery technology, classified processing technology, and central control technology (centralized water supply/drainage). In addition, with the increasing demand for intelligence, the integration of wireless network sensors and washing machines under the 5g background will also be the future development trend

perception technology

comprehensively compare various perception technologies of washing machines. Mainstream enterprises in Japan, South Korea and other countries have mature applications in the perception technology of washing machines, while most enterprises in China started late, and the perception algorithm stays in conventional applications, such as the realization of perception such as weight and eccentricity, and the accuracy of perception results is relatively low. With the development of various new sensor technologies, new sensing types are emerging, such as dirt sensing, clothing sensing, and so on. The sensing accuracy will jump to a new height. Through the continuous optimization of the perception algorithm, the washing machine will finally achieve the "sense of everything"

vibration and noise reduction

under the background of consumption upgrading, people pay more and more attention to the noise problem of washing machines. For vibration and noise reduction technology, most washing machine enterprises still adopt passive control technologies such as cement counterweight and sound-absorbing sponge. The noise evaluation of products tends to be numerical management, while the sound quality evaluation system closer to the actual feelings of consumers has not been established. In the future, the accurate sensing technology of washing machine eccentricity (size and position) will continue to develop iteratively, and various active vibration control technologies, such as magnetorheological damping and balance ring eccentricity adaptive control, will continue to be upgraded and applied. At the same time, the application of sound design, active noise reduction technology and sound quality optimization design in products will greatly improve the comfort of washing machines

energy and water conservation

the long-term goal of energy and water conservation is "low energy consumption" and "low water consumption". The main goal of "low energy consumption" is to reduce motor energy consumption, heating energy consumption and energy consumption of main electrical components. At present, it mainly relies on motor frequency conversion, while cold water washing technology and heat pump drying technology can significantly reduce product energy consumption. "Low water consumption" aims to reduce the amount of washing water and drying water. On the one hand, in order to reduce the waste of washing water, the technology of washing and drying is gradually developed and matured; On the other hand, in order to improve the recycling utilization rate of washing water, the washing water recycling self purification system has become a hot spot in the future. At the same time, breakthroughs in the performance of detergents, such as concentrated, active and environmentally friendly new detergents, can greatly reduce the rinsing times and water volume while improving the washing effect of washing machines

to sum up, with the innovation and development of various technologies, the washing machine will develop in depth in the direction of "green, healthy, comfortable and intelligent". At present, Australia is the country using the device. At the same time, technological innovation is no longer centered on product hardware upgrading, but has really stepped into a three-dimensional technological innovation era centered on improving users' "laundry experience + Pro environment"

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