Foshan September 28, 2022 /PRNewswire/ -- On September 20, with the theme of "Fearless, because of the initiative of technology", Midea Building Technology Water Machine Brand Release and Strategic New Product Release Conference was held in Chongqing. At the event, Midea Building Technology officially released the new water machine brand - Kunyu, in the name of technology, to the industry. In the subsequent strategic new product release stage, Kunyu Water Machine launched new technical achievements - magnetic levitation ice cooling duplex unit, air suspension centrifuge, and suspension technology platform. This marks that Midea is deeply deploying the Chinese water machine market with a brand new brand, comprehensive products and leading technologies.
MiDe releases water machine brand "Kunyu"
Kunyu: conveys technological value and shows the heavy weapon of a great country
has long Kun white teeth like snowy mountains, transforms into a roc and spreads its wings, and hits the water for thousands of miles; there is Dayu controls water Opens the dragon gate, mountains and rivers return to the flow, and the sea embraces all rivers. The word "Kunyu" is taken from ancient Chinese legends. It is not only a romance unique to Chinese culture, but also a magnificent momentum also represents the technological confidence given to Chinese brands through product hard power.
And this confidence is not innate.
Li Gefeng, general manager of Midea Building Technology Water Machine Products Company, said on the spot that in 1964, Chongqing General Motors designed and successfully manufactured my country's first centrifugal chiller , and by 2021, 1,000 centrifugal water units were delivered in a single year, achieving the first domestic centrifugal water machine sales of over 1,000 in more than 50 years. It also reached the international leading level through independent research and development of technology, ranking among the forefront of the industry and going to the world. Looking at the independent research and development of Midea centrifuges, we have achieved from nothing to something, from something to excellence, from technology introduction to independent innovation. It can be said that the evolution and transformation history of Midea centrifuges is the development history of Chinese domestic centrifuges .
Li Gefeng, general manager of Midea Building Technology Water Machine Products Company,
This evolution and transformation have been continuing. According to a set of data released on site by Midea Building Technology, in recent years, Midea centrifuge benchmark projects have profoundly demonstrated that "Kunyu" has spread its wings and is continuing to create the feat of Chinese centrifuges.
In the data center, Midea won the bid for China Mobile's 100% share of centralized procurement in 2020. Nearly 300 centrifuges are currently in service; at Huawei Pengcheng Cloud Brain, Midea has created an exclusive solution that allows data centers to calculate 10 billion times per second, and PUE is only 1.25, setting a new benchmark for green energy saving in Greater Bay Area . In rail transit, Midea has a 55% rail transit product coverage rate, Beijing-Zhangjiakou Railway , Shenzhen Metro , Suzhou subway, and maglev units or high-efficiency computer rooms are used throughout the line. In the aviation field, Beijing Daxing Airport , Midea's efficient centrifuge helps the "phoenix spread its wings" and shows the style of a great country; Guangzhou Baiyun Airport , using Midea 30 centrifuge units throughout the venue, allowing the world to feel the "Chinese temperature". In the industrial park, BYD , Siemens , CATL , Longi Green Energy Technology Co., Ltd. , Hikvision , various large-scale customized scenario solutions are deeply trusted by users.
Li Gefeng told reporters on the spot that in 2022, despite the multiple impacts of Chongqing's high temperature, power limit and epidemic in August, Midea's centrifuge remains in a state of unabated momentum, and it is expected that annual production and sales volume is expected to exceed 1,600 units, challenging the industry leader. From technology to production capacity, and then to market share, compared with the domestic water machine brands represented by centrifuges, sixty years ago, it has achieved a comprehensive leap. As Li Gefeng, general manager of Midea Building Technology Water Machine Products Company, said at the press conference, today, Midea centrifuges have spread all over the world, and their core technologies have reached the international leading level. "We are not short of products, we are not short of technology, but we lack a Chinese voice, and a independent brand that allows the world to witness China's technological power." A new brand that can convey the value of technology and show the important tools of a great country - Kunyu came into being. Looking back at the transformation of Midea Water Machine, just like the brand name "Kunyu" released today, first for Kun, diving into the sea, waiting for the strong wind; then for Peng, bearing the blue sky, and repelling the clouds.
expert identification, Midea's magnetic levitation ice cooling technology internationally leading
event site, Li Zhenshan, head of centrifuge research and development of Midea Building Technology Water Machine Products Company, brought Midea's magnetic levitation ice cooling duplex centrifuge unit series products on the spot, the single-unit air conditioning condition cooling capacity ranges from 200RT to 1800RT, and the ice cooling capacity ranges from 150RT to 1250RT, which is the most comprehensive in the industry. This product not only solves a series of industry pain points and problems such as energy consumption, stability, and reliability of traditional units, but also achieves international leadership in its excellent technical performance.
Li Zhenshan, head of centrifuge research and development of Midea Building Technology Water Machine Products Company,
According to Li Zhenshan, the new product of Midea magnetic levitation ice cold storage duplex unit adopts duplex special impellers with adaptive gas replenishment and enthalpy increase technology to solve the problem that the efficiency of air conditioning conditions and ice storage conditions cannot be taken into account. It uses the energy efficiency improvement of the entire flow field wide range energy efficiency and the optimal gas replenishment effect under the energy balance algorithm to achieve overall product efficiency optimization, and improves energy efficiency by 6% compared with single-stage compression. The COP of ice storage conditions is as high as 4.656, and the COP of air conditioning conditions is as high as 7.03, and the energy efficiency level reaches the industry's leading position.
To enhance product stability and reliability, Midea's magnetic levitation ice cooling duplex unit adopts ultra-long life backup bearings and high-precision multi-degree overload suppression and anti-assist technology, achieving the industry's first full-speed hard drop times with a maximum of 300 times, as well as the industry's highest anti- surge capability. It is worth mentioning that Midea has also applied the industry's first horizontal opposing compression technology in magnetic levitation ice storage duplex units. Compared with traditional units, the critical speed of is 30% higher, and the axial force is only 10% of that of , which greatly improves product reliability. In addition, Midea has innovatively developed micro-channel anti-condensation inverters to achieve super-strong heat dissipation and full-working conditions without condensation, further improving the reliability of the unit's operation.
, an expert appraisal committee composed of 7 experts including , Academician Chen Xuedong of the Chinese Academy of Engineering, Li Jiang, and , the director of the of Hefei General Mechanical and Electrical Products Testing Institute, conducted a professional appraisal of Midea's magnetic levitation ice cooling duplex unit, and unanimously agreed that Midea's high-efficiency magnetic levitation variable frequency centrifugal ice cooling duplex unit technology is at the international leading level. The project is technically difficult, the results are outstanding innovating, and the energy conservation and emission reduction effects are significant. It has independent intellectual property rights, which is of great significance to promoting the development and application of ice cooling technology under the background of my country's "carbon peak and carbon neutrality" strategy.
technology is proactive, fully independent intellectual property levitation technology platform released
In recent years, magnetic levitation centrifuge units have ushered in a peak of development, especially in the Chinese market, government energy conservation and emission reduction, green building and other policies, as well as the renovation of new public buildings and old equipment in China, jointly promoted the rapid development of magnetic levitation centrifuge units in China. At the press conference, Midea Building Technology started from user needs, breaking through the three major challenges of "reliability", "energy efficiency" and "intelligence", and innovatively launched the Kunyu suspension technology platform with fully independent intellectual property rights, including magnetic suspension and air suspension products with cooling capacity ranging from 50RT to 1800RT.
Kunyu The floating technology platform R&D team has more than 100 people, of which the master and doctoral students account for 76%. During the entire platform development period, R&D funds have been invested in more than 500 million yuan, and more than 10 internationally leading core technologies have been obtained, which has been comprehensively upgraded to achieve HVAC scenario application in thousands of industries.
According to Luo Mingwen, director of the R&D Center of Midea Building Technology Water Machine Products Company, in order to break through the "reliability" challenge, reassure users and ensure the stability and accuracy of rotor suspension under extreme working conditions, the Kunyu suspension technology platform has launched a technology combination punch of "technology + algorithm". First, through the feature recognition feedforward vibration suppression algorithm, high robustness control of the entire working frequency band is achieved; at the same time, Kunyu applies the feature recognition feedforward vibration suppression algorithm to ensure that the continuous high-voltage ratio is withstand more than 300 consecutive surges within 1 hour, the unit does not stop without faults, and the bearings are stable and suspended without faults. In order to deal with unpredictable abnormal situations and maintain the smooth landing of the suspended rotor, Kunyu industry pioneered the self-generating mode. Even if the power is suddenly cut off, the system can detect a voltage drop within 10ms, and the motor will automatically switch to the generator mode to ensure that the rotor is nearly zero speed and is ready to drop.
0Luo Mingwen, Director of R&D Center of Midea Building Technology Water Machine Products Company, in response to energy efficiency challenges, Kunyu first recommended horizontal opposing impellers in the industry, which can achieve a reduction of axial force by 90%, mechanical loss by 97%, and pressure drop by 50% year-on-year. At the same time, the dynamic and static gap is as low as 75μm, reducing leakage loss by 50%. Through efficient film decreasing evaporation technology, multi-stage liquid distribution technology and digital tube bundle structure design, the heat exchange efficiency is increased by 10% and the refrigerant charge volume is reduced by 25%.
In addition, Kunyu also brings more "smart" operations to users on the user side, allowing users to worry. Kunyu has innovative digital operation and maintenance design and digital twin remote inspection and diagnosis services, which can build cloud-edge collaborative predictive health management and ChillerDoctor water machine health prediction management system for users, comprehensively respond to a variety of application scenarios, allowing users to use worry-free, discover problems in a timely manner, and handle situations efficiently, truly realizing the product concept of "leave complexity to Midea and make users simpler".
ten years warranty, where is the confidence of Kunyu magnetic levitation compressor?
At present, central air conditioners have become a necessary facility for modern buildings. According to industry online data, since 2012, China's central air conditioner market has been in a growth trend. In 2021, the scale of my country's central air conditioner market reached 112.01 billion yuan, and the domestic market size exceeded 100 billion yuan for the first time.
The growing number of central air-conditioning equipment ownership also means a huge after-sales service market.
Based on insight into user needs, breakthroughs in a number of core technologies, and confidence in product reliability, Midea Building Technology launched a ten-year warranty service for magnetic levitation compressors at this press conference. Based on the original two-year warranty, the magnetic levitation compressor category used in chiller unit promises to extend the warranty period to ten years. The warranty scope covers 14 key components such as impeller , magnetic bearings, and permanent magnet motors, and basically covers all components of the magnetic levitation series centrifugal compressor body. At the same time, with the release of the "Kunyu" brand, Midea Building Technology announced that it will invest 50 million yuan to provide free inspection and digital upgrade services to all Midea centrifuge users.
Mi's move has set a precedent for the ten-year quality assurance of magnetic levitation compressors, and has also increasingly promoted the update of after-sales service in the entire industry, driving the industry to further reshuffle and upgrade.
is efficient and flexible. Kunyuqi suspended centrifuge unit sees the future. At the press conference, the product introduction of "Kunyuqi suspended centrifuge unit" also attracted widespread attention.
On-site Midea Building Technology Water Machine Products Company gas suspension product manager Wu Xin published information showing that Kunyu gas suspension centrifuge unit uses the industry's first non-isometric high-wave foil oil-free gas floating bearing , with a load capacity of more than 52% higher than that of traditional gas floating bearings, solving the problem of low bearing capacity under the low viscosity coefficient of lubricating medium.
In terms of energy efficiency, Kunyuqi suspension unit has achieved a COP of up to 6.45, which is more than 40% higher than traditional units. Compared with traditional units, it is expected to save 50,000 yuan in electricity bills each year, and it also contributes to the achievement of China's " carbon neutrality " policy goal.
In addition to being efficient, Kunyu Qi suspended centrifuge unit has the characteristics of "smart and freedom". The unit uses a modular design of the whole machine, with the smallest volume in the industry, covering an area of only 0.78 square meters, and the installation occasion is not limited; there is no need for lifting equipment to install and transport, and can enter and exit passenger elevators, providing convenience for various energy-saving transformation projects.
Kun is so big that it is not a few thousand miles away; Yu's wisdom is not afraid of difficulties to benefit all ages.
With the release of new brands, new products and new platforms, Midea Building Technology will continue to independently develop technology and research and development capabilities, explore more professional, efficient, green, intelligent and reliable product solutions, and bring high-quality service experience to thousands of industries. This will inevitably promote a new height of domestic centrifuge technology and service innovation.
