Inverter air conditioners are favored by more and more users because of their energy saving. However, because of the rapid temperature drop after booting, the experience of the user is extremely poor, and the market has been plagued by the inability to quickly iterate. Is there a technology that can make the user experience very good, and can surpass the existing inverter air conditioner in energy saving effect? The answer is yes.
Recently, a "black technology" called dual temperature difference PID linkage control technology was successfully developed in Haier, and it solved the problem that has troubled the air conditioning industry for more than 20 years. This "black technology" makes Haier air conditioner more than 30% more energy efficient than the inverter air conditioner on the existing market. It is amazing.
At present, most of the market adopts DC frequency conversion technology to achieve comfort and energy saving effects, and Haier can provide temperature that meets human comfort through control technology other than this. Especially in recent years when the cold current comes early, the application of this technology will completely optimize the comfort of air-conditioning heating, which is very practical.
This technology is very different from the frequency conversion technology. At present, the inverter air conditioner mainly performs frequency control by setting the temperature difference between the temperature and the ambient temperature to achieve rapid cooling, but the limitation is that the frequency fluctuation is large, and the outlet temperature is only 7 to 10 ° C, resulting in poor comfort of the human body. Haier has developed two mathematical models to solve this problem. The first is a dual temperature difference PID mathematical model that meets the air conditioning comfort temperature difference control. The first is a mathematical model of the PMV human body thermal comfort that conforms to the Chinese body mass. These two mathematical model algorithms ensure the comfort of the human body during the temperature rise and fall of the air conditioner from the intelligent control of the software. The difficulty with this technique is that it requires mutual verification of a large number of data parameters and mathematical models. The mathematical model is unique to Haier.
Furthermore, this technology is also more energy efficient than existing DC inverter technology. The existing DC inverter air conditioner uses a rare earth compressor to save energy from the hardware. The unstable compressor frequency makes the energy saving effect constrained, and it is difficult to make further breakthroughs. Haier is another way to optimize the algorithm from software control. The energy saving effect of users in actual use is better than that of DC inverter air conditioner. The test results of the National Daily Electrical Appliance Quality Supervision and Inspection Center show that the Haier air conditioner with this technology can save more than 30% energy than the inverter air conditioner.
Haier did not elaborate on the dual temperature difference PID linkage control technology, but this technology is beneficial to the development of air conditioning intelligent technology in the future. For example, based on this, an intelligent human feeling of the air conditioner and an upgrade of the smart energy saving technology can be realized.
At present, at the technical appraisal meeting organized by the China National Light Industry Association, this technology has passed the authoritative appraisal of the “Academician Title†and reached the international leading level. It is said that this technology will be applied to smart air conditioners. If Haier realizes the full application of this technology, it will completely replace the existing frequency conversion technology, improve the comfort performance of air conditioners, and further accelerate the popularization of smart air conditioners.
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