Recently, the results of the 20th China Patent Award were announced, and Dunan Environmental invention patent "Microvalve device and valve body assembly" was named the 20th China Patent Excellence Award.

It is reported that the China Patent Award is jointly selected and awarded by the State Intellectual Property Office and the World Intellectual Property Organization, and is the highest award awarded in the field of patents. Recognized by the United Nations World Intellectual Property Organization (WIPO), it has international influence. The award criteria include four aspects: patent quality, technological advancement, application and protection measures and effects, social benefits and development prospects, not only emphasizing the level of patent technology and innovation, but also focusing on the application in the process of market transformation.

The patent of "microvalve device and valve body component" belongs to microelectromechanical technology, which is the key device in microfluidic control. It is one of the strategic emerging industries that have been deployed at home and abroad in recent years. It is fully used in two categories of products, such as electronic expansion valve and MEMS service valve, with the advantages of high efficiency, low consumption, reliability, micro and intelligence. Based on this patented technology, Dunan Environment has provided fluid control solutions for many domestic and foreign enterprises.

At the same time, the patent in the drive mechanism to achieve a breakthrough, with electric drive to replace the traditional electromagnetic drive, technically located in the forefront of the international level, its ultra-high technical reliability, as well as leading energy saving and environmental protection advantages, for China's refrigeration valve products in the international market to provide a strong competitiveness.

In building energy consumption, air conditioning energy consumption accounts for 20% of the total energy consumption, and the promotion and application of "micro-valve devices and valve body components" can save 4.28 billion KWH of electricity per 10 million sets and discount 527,000 tons of coal (equivalent value); The life of MEMS electronic expansion valve is about 1 million times, about 5 times the life of ordinary electronic expansion valve, which greatly reduces the resource loss caused by the replacement and maintenance of ordinary electronic expansion valve products.

At present, the patented technology is widely used in the field of refrigeration, commercial multi-line, heat pump and other systems, with the continuous development of new materials, new processes and intelligent technology, the future in aviation, military and medical and other fields with higher shape and performance requirements will also have a wide range of application prospects.