Fan and impeller chimney for fan
A technology of impeller cover and fan, which is applied to components of pumping devices for elastic fluids, liquid variable displacement machines, non-variable displacement pumps, etc., which can solve the problem of large loss, limited noise suppression and limited noise attenuation And other issues
Active Publication Date: 2018-11-06
佛山市凌飞电器有限公司
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Problems solved by technology
[0007] The fan with this structure can provide uniform airflow, and sound-absorbing measures are taken for the noise generated by the impeller and the motor, reducing the noise transmitted from the fan; however, the fan with this structure has a limited effect on noise suppression, especially for high-frequency Low noise has limited attenuation; in addition, the loss of airflow from the base into the nozzle is relatively large
Method used
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[0068] Figure 1 is a schematic view of the fan of the present invention viewed from the front of the device, figure 2 It is a side view of the fan shown in Fig. l. from figure 1 and figure 2 It can be seen from the figure that the fan 100 includes a base 3 , a bracket 2 on the base 3 and a nozzle 1 arranged on the bracket 2 .
[0069]The base 3 includes a lower base 10 and an upper base 8 located on the lower base 10 . The upper base 8 includes an air inlet 9 in the form of a plurality of holes formed in the side wall of the upper base shell. The lower base 10 includes a plurality of control buttons 11 , 12 and 13 operable by a user. The air outside the fan is sucked into the upper base 8 through the air inlet 9 .
[0070] The lower end of support 2 is fixed with the upper end of upper base 8, and with reference to Figure 4 , the bracket 2 includes a bracket shell 201, a first outlet portion 151 and a second outlet portion 152 with an air outlet, a bracket inner shell...
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The invention discloses a fan for generating air flow. The fan comprises a nozzle and a base, wherein the base comprises an outer shell with an air inlet, an impeller chimney located inside the outershell, an impeller located inside the impeller chimney and a motor driving the impeller to rotate for working. The fan is characterized in that the impeller chimney comprises the cylindrical shell with the air inlet, a draft tube, a plurality of first partitions, a plurality of second partitions and a plurality of noise elimination cavities, wherein at least one part of the draft tube is located in the cylindrical shell, and the draft tube is provided with an air inlet and an air outlet; the first partitions and the second partitions are located between the cylindrical shell and the draft tube, and the noise elimination cavities are limited by the cylindrical shell, the draft tube, the first partitions and the second partitions; and the noise elimination cavities include air inlets locatedon the cylindrical shell and air outlets on the draft tube. The invention further provides the impeller chimney for the fan.
Description
[0001] This application is a divisional application of an invention patent application with the application number: 201610050798X, the name of the invention: fan and its impeller cover for the fan, and the application date: January 26, 2016. technical field [0002] The invention relates to a fan and an impeller cover for the fan. In particular, but not exclusively, the invention relates to domestic fans and impeller guards for such domestic fans. Background technique [0003] A traditional household fan generally includes a blade set that rotates around an axis and a motor that drives the blade set to rotate. The movement and circulation of the airflow creates "air cooling", which cools the user as heat is dissipated through convection and evaporation. [0004] Fans are available in a variety of sizes and shapes. Ceiling fans are usually larger than lm in diameter and are usually mounted in a suspended manner from the ceiling to provide downward airflow to cool the room. ...
Claims
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IPC IPC(8): F04D29/66F04B41/06
CPCF04B41/06F04D29/663F04D29/664
Inventor 不公告发明人
Owner 佛山市凌飞电器有限公司