Air inlet chamber of fan
A technology of air intake box and fan, applied in mechanical equipment, machine/engine, liquid fuel engine, etc., can solve the problems of lower efficiency of the whole machine, large flow loss, backflow, etc., and achieve the effect of improving operation efficiency and output.
Inactive Publication Date: 2012-05-23
NANTONG DART POLLRICH FAN
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Problems solved by technology
The advantages and disadvantages of the structure of the air intake box have a great impact on the performance of the fan. The existing problems of the air intake box are mainly manifested in the following two aspects: First, the flow field inside the air intake box is chaotic and the flow loss is relatively large; Second, the outlet speed distribution is extremely uneven, and even backflow occurs. These problems have caused the deterioration of the inlet conditions of the moving blades, resulting in a decline in the efficiency of the whole machine
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Embodiment Construction
[0010] The present invention will be further described below in conjunction with embodiment.
[0011] like figure 1 , figure 2 As shown, a fan air intake box includes an air intake box body 1, and an air intake box side plate 2, an air intake box inclined side plate 3, and an air intake box coaming plate 6 are arranged on the air intake box body 1. The inlet of the air box body 1 is equipped with a splitter plate 4 for eliminating the airflow in the air intake box, and at the end of the air box body 1 is also provided with a deflector 5 to improve the uniformity of the air flow. The air intake box is a steel plate welded structure, and its center line is an arc-shaped structure.
[0012] The present invention is through above-mentioned improvement, and from the performance of test model blower blower, the total pressure coefficient and the efficiency of blower blower all have obvious increase, are 4% before improvement; The measurement of the internal flow field was carrie...
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The invention discloses an air inlet chamber of a fan. The air inlet chamber is mainly applied to a primary fan, a secondary fan or a draught fan of a large power station, and the advantages and disadvantages of the structural form of the air inlet chamber have a greater effect on the performance of the fan. In the invention, on the basis of the traditional air inlet chamber, a splitter plate is arranged at an inlet part of the air inlet chamber, an air deflector is arranged at the tail end of the air inlet chamber, the splitter plate can be used for removing airflow convolution in the air inlet chamber so as to introduce air into an impeller smoothly, and the air deflector can be used for increasing airflow uniformity so as to gradually increase air speed. According to the invention, the resistance to a smoke air system is reduced by additionally arranging the splitter plate and the air deflector, so that the boiler output can be effectively increased, and the operating efficiency of the fan is increased.
Description
technical field [0001] The invention relates to a fan accessory, in particular to a fan intake box. Background technique [0002] From the point of view of fan efficiency, it is best not to use an air intake box. However, for the primary, secondary, and induced draft fans used in large-scale power stations, the air intake box is necessary because the selected fan has a double-suction and double-support structure. few components. The advantages and disadvantages of the structure of the air intake box have a great impact on the performance of the fan. The existing problems of the air intake box are mainly manifested in the following two aspects: First, the flow field inside the air intake box is chaotic and the flow loss is relatively large; The second is that the outlet velocity distribution is extremely uneven, and even backflow occurs. These problems have caused the deterioration of the inlet conditions of the moving blades, resulting in a decline in the efficiency of the ...
Claims
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Inventor 顾萍
Owner NANTONG DART POLLRICH FAN