Those who really understand technology in the industry will know that Hitachi’s technology is definitely better than Daikin, and selling more does not mean it is the best.
Hitachi is an internationally renowned company ranked 47th among the Fortune 500. It has very strong scientific and technological capabilities in the fields of machinery manufacturing, integrated circuits, power electronics, communications, and nuclear energy. Hitachi’s products also include Nuclear power plants and maglev trains. In the field of refrigeration and air conditioning, Hitachi has always been the technology leader in the industry.
Hitachi variable frequency multi-connected central air conditioning system is a new type of central air conditioning technology developed by Japan's Hitachi Company in the 1970s.
In 1910, Japan's first electric motor was produced by Hitachi, which ranked second among the world's electric motor companies.
In 1964, all Japanese Shinkansen lines used Hitachi inverters, motors and control technology.
In 1983, Hitachi successfully developed and produced the world's first scroll compressor that was efficient, reliable, small in size, light in weight, low in noise and low in vibration, and was widely used around the world. Application
In 1987, Hitachi pioneered speed sensorless vector control technology and obtained a global patent.
In 2003, Hitachi was the first in the industry to launch a new high back-pressure scroll compressor with internal oil separation function. In view of the high-pressure characteristics of R410A refrigerant, an asymmetric scroll is specially designed and the bearing mechanism is strengthened to further improve the efficiency and reliability of the compressor.
In 2008, Hitachi applied the world's leading large-capacity scroll compressor to the new commercial central air-conditioning series, significantly improving energy efficiency and improving stability and reliability
Hitachi is a multi-split compressor The leader of core technology, he invented the third-generation scroll compressor in 1983. The patented technology has been maintained for 20 years. Daikin used Hitachi compressors from 1983 to 2003 until 2003. When Hitachi's patented technology expired, Daikin began to independently produce its own compressors in Xi'an; at this time, Hitachi had already invented and mastered higher patented technology, and innovated on the basis of the manufacturing of the third-generation scroll compressor. has developed internal oil separation technology in the compressor (this technology can greatly extend the service life of the compressor), and has also applied for a patent for this technology. In other words, only Hitachi in the industry can exclusively enjoy this technology. With this patent alone, Hitachi has undoubtedly occupied the dominant position in the industry for the next 20 years. Now Daikin is using Hitachi’s compressor technology from 26 years ago. There is no way, Hitachi is ahead again, and the compressor oil returns The technology has also been patented, and Daikin will have to wait another 20 years if it wants to use it.
Hitachi's three core technologies for air conditioning: compressor, inverter and controller are all unique to Hitachi and have the best technology in the industry. There is no doubt that Hitachi is the industry leader in terms of inverters. Japan’s maglev trains use Hitachi’s inverter technology. In terms of controllers, Hitachi is firmly in the top spot. Hitachi and Intel are listed as the two largest companies in the world. Manufacturer of industrial control chip brands. With these three core technologies alone, Hitachi has undoubtedly established its leading position in home inverter central air conditioners. Hitachi's construction has brought great guarantee to customers' projects and the construction is very rigorous.
In winter, the heating effect of Hitachi central air conditioners is much better than that of Daikin, and the defrosting technology is better. Above gold.