Is Hitachi central air conditioning good okmarts.com tells you how powerful Hitachi compressors are ？ I saw many articles about Hitachi compressors, various parameters and terminology, and simply summarized the following points
Compressor 1. Hitachi is the world's largest manufacturer of scroll compressors. There has been an embarrassing situation where high-end models of major domestic brands use Hitachi compressors. Later, China began to develop independent core components, and gradually began to have alternatives. 2. The third-generation scroll compressor invented in 1983, the patent technology has been maintained for 20 years. After the patent protection expired in 2003, domestic compressors began to appear. But at this time Hitachi has applied for a new generation of patented technology-compressor internal oil separation technology, patent protection is still 20 years. At present, Hitachi's scroll compressors are produced by Shimizu, Japan, Taiwan's Hitachi, and scroll compressors made by Guangzhou Hitachi (without oil separation) are supplied to other domestic air-conditioning manufacturers. Hitachi's central air conditioner is using a high-pressure chamber scroll compressor. The cooling and heating efficiency is higher, so it is only 90 seconds to start quickly. 3. In 2008, Hitachi applied large-capacity scroll compressors to the new commercial central air-conditioning series, which greatly improved energy efficiency and increased stability and reliability. 4. In 2014, Hitachi's mid-end household multi-connector also began to use dual-rotor compressors produced by Shanghai Hitachi to reduce costs. Frequency converter and control technology Hitachi is one of the largest motor manufacturers in Japan. Hitachi and Intel are listed as the world's two major manufacturers of industrial control chip brands, and the control system is also at the top level. All Shinkansen in Japan use Hitachi frequency converters, motors and control technology. Technical advantages: 1. Hitachi Central Air Conditioner's compressors, inverters and other major parts are all imported. 2. The climax of mute technology, reaching the industry's lowest 21 decibels. (70 dB in the street, 30-40 dB in the quiet library) 3. Small size, beautiful and space-saving, the thinnest is only 19.2㎝. 4. Temperature control is close to precision air conditioning. The use of the three-in-one temperature controller for the inlet, return and remote temperature sensor controllers makes the temperature control around ±0.5℃. 5. Inverter compressor (stepless frequency conversion between 0-100%, Daikin, Toshiba, Mitsubishi Electric, etc. all have graded frequency conversion.) 6. Scroll compressor (Hitachi introduced the scroll compressor as early as 1983, so it can be said that Hitachi is the originator of the scroll compressor.) 7. Intelligent defrosting, defrosting, defrosting time is 1/3 (precise defrosting control, making defrosting more accurate, only 560 seconds.) 8. Strong heating effect (the use of large-capacity scroll compressors is the most advanced compressor in the air-conditioning industry, making the unit's working range wide 40--23℃) 9. The secondary oil separation technology makes the refrigerant separation more pure, the carrying capacity stronger, and relatively energy-saving. DIP adjustment can adjust about 0.25 horses according to different people. Brand achievements: 1. Invented the world's first air-conditioning scroll compressor. 2. Hitachi has the largest sales volume in Japan. 3. The second-generation inverter technology is more energy-efficient than Toshiba's first-generation inverter technology. 4. 10P and 12P have side air outlet host, which is more flexible to install. 5. The thickness of the internal machine is only 19.2 cm, and the installation is more flexible. 6. The COP value is the highest in the industry, and the IPLV value is the highest in the industry.
