As energy saving, emission reduction and consumption reduction become the new normal in all walks of life, scroll compressors, recognized as the third generation of compressors, are increasingly favored by the market with their unique advantages in energy efficiency, noise and operating range. Therefore, scroll compressors have been widely used in conventional scenarios such as unit units, household air conditioners, home and small multi-link, and commercial multi-link, while continuing to expand to the fields of heating & module machines, precision air conditioners, freezing & refrigeration, and mobile refrigeration.

Strong market demand has driven the development trend of scroll compressors to frequency conversion and large displacement. At the same time, with the breakthrough of domestic compressor enterprises in key technologies, breaking the monopoly of foreign brands in the scroll compressor market and developing and manufacturing domestic large displacement variable frequency scroll compressors with high competitive advantages seems to have “come naturally”.

GMCC Scroll compressors cover a wide range of applications from home to business

Observing the changing market direction, GMCC Meizi relies on years of technology accumulation and innovation, gradually realizes the domestic replacement of scroll compressor through process optimization and industrial collaboration, and successfully realizes the mass production of the current industry’s largest displacement – 135CC large displacement scroll variable frequency compressor in 2023. From home to commercial, from refrigeration to heat pump, Meizhi scroll compressor can cover a wide range of scenarios and applications, and Meizhi is also helping the high-quality and sustainable development of China’s scroll compressor industry through continuous accumulation and breakthrough independent research and development capabilities.

With continuous technological innovation, Meizhi builds competitive barriers for large-displacement scroll compressors

In August this year, the scientific and technological achievements of “Research and application of Key technologies of large-displacement high-efficiency Variable frequency Scroll compressor” led by Meizhi passed the “International leading” level appraisal of China Light Industry Federation, highlighting Meizhi’s perseverance in technological innovation of scroll compressor. As a typical landing result, 135CC large-displacement scroll inverter compressor has a wide range of use, high energy efficiency, high reliability and other industry leading performance, showing a strong market competitiveness. Behind this is inseparable from a number of key technical support of innovation and research and development of Meizhi:

• In terms of performance, the 135CC large-displacement scroll variable frequency compressor adopts the motor harmonic loss suppression technology, asymmetric pump shape line and multi-stage pressure relief valve technology to make the compressor more efficient;
• In noise reduction, the application of high-precision dynamic balancing technology and dynamic exhaust valve disc technology to further reduce the noise level;
• In the wide operating range, scroll strengthening technology, adaptive pressure relief technology, and motor broadband operation technology are used to further improve the wide operating range;
• In terms of high reliability, the application of efficient oil spitting suppression technology and enthalpy increase and check technology further improves the high reliability of the compressor.

For example, Meizhi relies on efficient oil spitting suppression technology and highly reliable tail strengthening technology, which reduces the high-frequency oil spitting rate by 10% compared with the industry. Relying on the enthalpy increase check valve and the scroll tail strengthening design, the pressure pulsation loss can be reduced by 40% and the stress in the scroll tail can be reduced by 50%.

The key technology research and application of GMCC high efficiency variable frequency scroll compressor with large displacement won the “International leading” appraisal

Taking the 135CC Meize Scroll compressor using R290 refrigerant as an example, the use of low-oil technology to significantly reduce the concentration of R290 refrigerant, while designing a special oil and safer compressor structure for this environmentally friendly refrigerant compressor, further improving the compressor’s operating life and energy efficiency. In addition, efficient and reliable lubrication system is the guarantee of product reliability, the 135CC lubrication system adopts the design of high pressure side annular high pressure oil tank, medium pressure area segment oil tank, low pressure oil tank gradient setting, to further improve the lubrication effect, thereby reducing the amount of wear, improve the mechanical efficiency, operational reliability and durability of the compressor.

Scene first, Meizhi large-displacement scroll compressor continues to expand application scenarios

At present, Metz 135CC large-displacement scroll inverter compressor can be widely used in commercial air conditioning, heat pump heating, room air conditioning, energy storage and other subdivisions, with larger displacement, higher energy efficiency, more reliable scroll compressor solutions to meet the needs of cooling and heating control in subdivisions.

In the computer room scenario, ensuring the safe and efficient operation of computer equipment is the number one concern of managers. The multi-stage pressure relief structure of the air conditioning compressor in the equipment room is adopted to achieve the minimum 1.1 pressure ratio design, preventing the low pressure ratio from being over-compressed and improving the energy efficiency at low load. At the same time, devices in the equipment room have strict requirements on the environment temperature and humidity. In the case of humidity, tiny droplets of water floating in the air can enter the smallest areas and Spaces of any component, resulting in high maintenance costs for data center operators. The air conditioning compressor has the characteristics of accurate speed control, can achieve accurate constant temperature and humidity, temperature accuracy of ±0.5℃, humidity accuracy of ±2%, is a reliable “guardian” of stable operation of the machine room.

With the advantages of high energy efficiency, high reliability, wide operating range, low noise/low vibration, Meji inverter scroll compressor has been used in Huawei AHU room air conditioning (210KW) batch production.