A brief discussion on the development trend of global washing machine technology
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In modern human society, washing machines have become a must-have. With the progress and development of politics, economy and culture, people have higher and higher requirements for health quality and life, and the washing machine industry and technology have also undergone tremendous changes.
1. Current status of washing machine development
In the early 21st century, the washing machine industry market ushered in unprecedented pressure. Due to the deviation in the estimation of market demand, the overall domestic demand was insufficient, and exports were very difficult, resulting in a large backlog of washing machines, which greatly tested the survival ability of enterprises. From the analysis of the retail sales share of product types, the proportion of drum products is increasing, and the main upgrade is on drum washing and drying machines. At the same time as consumption upgrades, the comprehensiveness and functional integrity of technology are very high, and the future development of the washing machine industry needs to firmly grasp the market consumption trend and design and produce washing machines in combination with the diversified needs of users.
2. Future development trends of washing machine industry technology
2.1 Application of new materials
At present, the colors of washing machine products are mostly silver and white, and the appearance materials are obviously personalized and lack fashion. At the same time, the antibacterial and corrosion-resistant properties are not strong, and a large amount of product packaging material resources are wasted. In the future, new materials such as nano-coating and new multi-color mixed injection molding will be introduced to make the product appearance more stunning. In addition, light weight and high-strength carbon fiber materials are the mainstream trend in the future. At the same time, functional materials such as sterilization, self-cleaning and noise reduction need to be widely used to effectively increase the added value of products. In addition, more anti-aging and antibacterial materials will be used to contribute to environmental protection.
2.2 Simulation technology
When developing washing machine products, major companies have used various simulation technologies, including drop impact analysis and internal system multi-body dynamics. Referring to the analysis of the development law of automobile industry technology, in the future, in terms of system, washing machine simulation technology still needs to be continuously improved, and the confidence of advanced tasks such as nonlinear simulation of shock absorbers should be continuously improved. In addition, various simulation optimization design problems can be effectively handled by continuously upgrading various simulation software.
2.3 Sensor technology
At this stage, the sensors suitable for washing machines are still very limited, and only temperature and water level perception can be realized. It can be seen that the functions are relatively narrow and the accuracy is not high. At the same time, new sensor intelligence such as turbidity and displacement can only be used in a small number of high-end products. In the future, with the upgrading of various sensor technologies such as humidity sensors, washing machines will obtain more accurate perception parameters and continuously improve functions such as classification and clothes drying. The comprehensive use of various sensors will continuously generate various new technologies, such as central control technology and automatic delivery technology. In addition, with the increasing popularity of intelligence, it is believed that in the near future, wireless network sensors and washing machines will be integrated under the background of 5G.
2.4 Perception technology
Comparing various washing machine sensing technologies, mainstream companies such as Japan and South Korea have already skillfully applied washing machine sensing technology, while most Chinese companies are still in the development stage, and the perception algorithm is still in conventional applications. For example, the perception of weight and eccentricity is realized, but the accuracy of perception parameters is relatively low, and there is still a lot of room for development. With the continuous advancement and development of various new sensor technologies, many new types of perception such as clothing perception and dirt perception are constantly emerging, and the perception accuracy will inevitably rise to a stage. The continuous optimization of perception algorithms will eventually realize a washing machine that can sense everywhere.
2.5 Vibration reduction and noise reduction
Today, we pay more attention to the quality and experience of products, and washing machine issues have always been the focus of people’s attention. For vibration reduction and noise reduction, washing machine companies are still stuck in passive and backward control technologies such as sound-absorbing sponges or cement counterweights. Product noise evaluation tends to be more numerical management, which cannot meet the actual sound of consumers, and no quality evaluation system has been established. In the future, the precise sensing technology of the size and position of washing machines will continue to be upgraded, and various active vibration control technologies such as magnetorheological shock absorption and eccentric adaptive control of balance rings will be continuously updated. At the same time, new washing machines will focus on the application of technologies such as active noise reduction design to enhance user experience and satisfaction, so that the majority of users can experience the comfort of the product when using washing machines.
2.6 Energy saving and water saving
“Low energy consumption” and “low water consumption” have always been the ultimate goals of energy saving and water use. The ultimate goal of “low energy consumption” is to minimize the energy consumption of motors, heating energy consumption, and energy consumption of major electrical components under the frequency conversion of motors, while cold water washing technology and heat pump drying technology can well reduce product energy consumption. “Low water consumption” starts from reducing the amount of water used for washing. On the one hand, in order to effectively reduce water consumption, the technology of rinsing and drying is becoming more and more perfect and mature; on the other hand, in order to greatly improve the recycling rate of washing water, the washing water circulation and self-purification system has become the focus of future development, and major breakthroughs have been made in the performance of detergents, such as the use of highly concentrated, highly active and environmentally friendly detergents, which can not only reduce the number of rinsing times, but also enhance the washing and care effect and reduce water use.
2.7 Intelligent manufacturing technology
Compared with advanced manufacturing industries such as automobiles, the washing machine industry is still in the development stage. In regions and countries with low labor costs, washing machine products are still mainly produced by manpower. In recent years, with the continuous advancement and development of industrial Internet technology, factories that use robots for large-scale assembly are booming.
2.8 Multifunctionality
During the rainy season or rainy weather, many southern families are suffering from the problem of drying clothes. On this basis, many high-end brand washing machines have the function of drying clothes, that is, after washing clothes, they can be dried quickly, effectively solving the problem of drying clothes after washing. At present, many common washing and drying machines on the market have adopted drying technology, mainly fast wind drying, which does not need to be hung out to dry or ironed. It can efficiently dry clothes while saving balcony space. The washing and drying machine uses an intelligent temperature control system. Under the control of intelligent temperature change, water quickly passes through the clothing fibers, restores the elasticity of the fibers, and makes the clothes more fluffy and smooth. At the same time, through the highly accurate NTC intelligent sensing system, it can sense the temperature and humidity in the drum at any time. Once the clothes are dry, the washing machine stops working to prevent the clothes from drying and becoming hard.
2.9 Drainage pump technology
Currently, permanent magnet brushless motors and three-phase variable frequency induction motors are increasingly widely used in washing machines. When dehydrating, consumers are very concerned about the noise of the drainage pump, especially in the final stage of drainage. If there is a small amount of residual water in the washing machine, it will produce gas-liquid mixed state and discrete noise, such as impeller slapping water surface noise, rotation noise, etc. When it comes to the final stage of drainage, there is a small amount of residual water, and the centrifugal force of the impeller cannot discharge this water, so this part of the water circulates back to the pump body. After that, the impeller continues to rotate to drain the water, and so on, there will be a “puff” sound every 1 second. The superposition of multiple discrete frequency noise peaks will not only increase the sound power of the washing machine, but also affect the sound quality, and even produce sharp and rough noise, which will cause dissatisfaction and complaints from consumers. At present, the sound quality of the drainage pump should be improved as soon as possible, especially the sound quality of the washing machine when water vapor is mixed.
The above is the current status and future development trend of washing machine technology. More intelligent and modern washing machines will inevitably appear in every family with the development and innovation of science and technology.
