2results about How to "Control combustion temperature" patented technology

The application belongs to the technical field of aero-engines, and discloses an aero-engine combustion chamber main combustion stage fuel nozzle and a fuel control method. The aero-engine combustion chamber main combustion stage fuel nozzle comprises a same center axis, a duty class fuel nozzle, a swirler and a main combustion stage fuel nozzle which are sequentially sleeved from inside to outside, and the outlet of the main combustion stage fuel nozzle is sleeved with a sleeve. The fuel control method ensures that the fuel jet flow of the duty class fuel nozzle is unchanged, the swirler rotates around the duty class fuel nozzle, the fuel jet flow of the main combustion stage fuel nozzle is adjusted, and then the total fuel jet flow of the aero-engine combustion chamber main combustion stage fuel nozzle is changed. The fuel control method of the aero-engine combustion chamber main combustion stage fuel nozzle realizes efficient fuel injection under different working conditions, guarantees the combustion efficiency and stability of the combustion chamber, controls the combustion temperature distribution of the main combustion zone, and reduces the pollutant emission of the combustion chamber.

The utility model relates to a novel moxibustion instrument, and belongs to the technical field of moxibustion. The moxibustion instrument comprises a rotary telescopic mechanism, the rotary telescopic mechanism drives the moxibustion sticks to rotate, stretch and move, the moxibustion method of rotary moxibustion and sparrow-pecking moxibustion is achieved at the same time, and suspended moxibustion can also be conducted. The rotary telescopic mechanism is driven by a direct current motor. The used moxibustion instrument is provided with a backflow type smoke filtering cover; the backflow type smoke filtering cover comprises an inner cover body, a middle cover body and an outer cover body which are sequentially sleeved; smoke outlets are formed in the end parts of the middle cover body and the inner cover body; the smoke flows back and forth in the backflow type smoke filtering cover; and filter cotton is arranged between the middle cover body and the outer cover body. According to the moxibustion instrument, sparrow-pecking moxibustion can be carried out while rotary moxibustion is achieved, and the moxibustion effect is improved. And suspended moxibustion can be realized. The moxibustion instrument is diversified in moxibustion method and good in effect. According to the moxibustion instrument, multiple moxibustion methods are combined for use, and the action effect of moxibustion on the human body is improved. The moxibustion instrument is provided with the backflow type smoke filtering cover, so that emission of smoke dust can be reduced.