conveys technological value and shows the important tools of a great country/picture source is beautiful
"Kunyu" and is taken from the ancient Chinese legend of "Kunpeng" and " Dayu ". Its magnificent momentum also represents the technological confidence given to Chinese brands through product hard power.
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, it will deliver 1,000 centrifugal water units per year. This is the first time that the annual sales of domestic centrifugal water machines have exceeded 1,000 in more than 50 years, marking that the independent research and development of this technology has reached the international leading level, ranking among the forefront of the industry, and going to the world. "Looking at the independent research and development of Meidi 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 Meidi centrifuges is the development history of China's domestic centrifuges ."
Li Gefeng, general manager of Midea Building Technology Water Machine Products Company/Photo source Midea
This evolution and transformation continues. A set of data released on site by Midea Building Technology shows that in recent years, Midea centrifuge benchmark projects have profoundly demonstrated that "Kunyu" is spreading its wings and is continuing to create the feat of the development of Chinese centrifuges.
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, introduced in detail Midea magnetic levitation ice cooling duplex centrifuge unit series products. The single-unit cooling capacity of air conditioning conditions ranges from 200RT to 1800RT, and the ice storage conditions range 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 reaches the international leading level.
Li Zhenshan, head of centrifuge research and development of Midea Building Technology Water Machine Products Company/Photo source Midea
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 compared with single-stage compression, the energy efficiency improvement is 6% higher than the energy efficiency, the ice storage conditions COP is as high as 4.656, and the air conditioning conditions COP is as high as 7.03, and the energy efficiency level reaches the industry-leading level.
An expert appraisal committee composed of 7 experts including Academician Chen Xuedong of the Chinese Academy of Engineering and Li Jiang, director of the of Hefei General Mechanical and Electrical Products Testing Institute, 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 innovative, and the energy conservation and emission reduction are significant. It has independent intellectual property rights. It is of great significance to promote the development and application of ice cooling technology under the background of my country's "carbon peak and carbon neutrality" strategy.
Director of Hefei General Mechanical and Electrical Product Testing Institute Li Jiang released the appraisal results on the spot/Photo source Midea
Fully independent intellectual property levitation technology platform released
At the press conference, Midea Building Technology started from user needs, broke through the three major challenges of "reliability", "energy efficiency" and "intelligence", and innovatively launched the Kunyu levitation technology platform with fully independent intellectual property rights, including magnetic levitation and air levitation products with refrigeration capacity ranging from 50RT to 1800RT.
It is understood that the Kunyu suspended technology platform R&D team has exceeded 100 people, of which the master and doctoral proportion has reached 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.
Luo Mingwen, director of the R&D Center of Midea Building Technology Water Machine Products Company, introduced that 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 is achieved throughout the working frequency band; 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 2,300 consecutive surges within 1 hour, the unit does not stop without faults, and the bearings are stable and suspended without faults. In order to cope 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.
Luo Mingwen, Director of R&D Center of Midea Building Technology Water Machine Products Company/Photo source Midea
In addition, Kunyu also brings more "smart" operations to user end users. It is reported that Kunyu has innovative digital and intelligent 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 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".
demonstrates its confidence and pioneered the "10-year warranty"
Based on insight into user needs, breakthroughs in a number of core technologies, and confidence in product reliability, Midea Building Technology launched a 10-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 10 years. The warranty scope covers 14 key components such as impeller , magnetic bearings, permanent magnet motors, etc., 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.
Industry insiders believe that Midea's move has set a precedent for a 10-year warranty 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, Kunyu Qi suspended centrifuge unit sees the future
press conference, "Kunyu Qi suspended centrifuge unit" also attracted widespread attention.
On the site, the information published by Wu Xin , the gas suspension product manager of Midea Building Technology Water Machine Products Company, showed that the Kunyu gas suspension centrifuge unit adopts the industry's first non-isometric high-wave foil oil-free air-floating bearing , with a load capacity of more than 52% higher than that of traditional air-floating bearings, solving the problem of low bearing capacity under the low viscosity coefficient of lubricating medium.
Wu Xin, gas suspension product manager of Midea Building Technology Water Machine Products Company/Photo Source Midea
In terms of energy efficiency, Kunyu gas 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 0.78m2, 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.
Upstream News Reporter Ma Liang
