A centrifugal fan impeller with adjustable splitter blades

Abstract

The invention discloses a centrifugal fan impeller with adjustable splitter vanes. In the use of existing fan products, the working conditions are usually not consistent with the rated working conditions, resulting in low efficiency of the fan and narrowing the efficient operation range of the fan. The guide ring and the wheel disc of the present invention constitute a revolving pair; the total fixed frame is fixed on the wheel disc, and a guide ring fixing device is provided; the guide ring is connected with n splitter blade ring fixing devices; the splitter blade and the wheel The cover is connected through the fixing device on the splitter blade wheel cover, and is connected with the disc through the fixing device on the splitter blade wheel disc; the fixing device on each splitter blade ring is connected with the corresponding one on the splitter blade wheel disc through the splitter blade adjustment piece. The invention adjusts the angle of the splitter blades by rotating the guide ring to make the splitter blade regulator swing, and obtains the highest operating efficiency for different working conditions, ensuring that the centrifugal fan can also obtain the highest operating efficiency under rated working conditions under non-rated working conditions .

Description

technical field [0001] The invention belongs to the field of fan equipment and relates to a centrifugal fan, in particular to a centrifugal fan impeller with adjustable splitter blades. Background technique [0002] Energy is an important material basis for economic and social development and improvement of people's living standards. The energy issue is a crucial issue for a country. Since the 1990s, the contradiction between my country's energy supply and demand has been increasing, and the problem of energy shortage has emerged. According to the survey, wind turbines account for about 10% of the country's electricity consumption. The country requires that the efficiency of the fan should not be lower than 70%, but the average operating efficiency of the existing fan is only 40%-60%. It can be seen that the energy-saving potential of the fan is very considerable. Optimizing the performance of the fan, improving the operating efficiency, and enhancing the stability of the ...

AI Technical Summary

Problems solved by technology

However, both the process industry and ordinary civil fans have the problem that the operating conditions do not match the design conditions.

Although some fan products have high operating efficiency under rated working conditions, the general working conditions do not match the rated working conditions in actual use.

This not only results in low efficiency of the fan, but also narrows the range of efficient operation of the fan, which in turn causes stability problems in the operation of the fan

However, the requirements of the places where fans are used are very diverse. It is difficult to achieve mass production if the corresponding fans are designed according to the rated working conditions of the flow requirements of the places where the fans are used.

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