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Fan

A fan and impeller technology, applied in the field of household fans, can solve the problems of reduced air transmission efficiency, turbulent air flow, loud noise, etc.

Inactive Publication Date: 2017-05-24
许彐琼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the air flow turbulence is prone to occur at the air inlet of the impeller, which will cause the reduction of air transmission efficiency and generate greater noise.

Method used

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Embodiment Construction

[0032] Figure 1 is a schematic view of the fan of the present invention viewed from the front of the device, from figure 1 It can be seen that the fan 100 includes a base 2 and a nozzle 1 disposed on the base 2 . The base 2 includes a base 10 and a base 8 on the base 10, the base 8 includes an air inlet 9 in the form of a plurality of holes formed in the base housing and a plurality of buttons 11, 12 and 13 operable by the user . Air outside the fan is drawn into the base 8 through the air inlet 9 .

[0033] figure 2 Is a schematic diagram of the nozzle of the fan shown in Figure l. From figure 2 As can be seen in the figure, the nozzle 1 comprises a main body 4 and an inlet portion 3 . The main body 4 includes an outer shell 6, an internal channel for receiving airflow, an air outlet 7 for emitting airflow, and an opening for allowing the inlet part 3 to partially protrude. In this embodiment, the main body 4 can slide relative to the inlet part 3, so that the fan can...

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Abstract

The invention relates to a fan. The fan comprises a base and a nozzle arranged on the base, wherein the base comprises an impeller shell, an impeller and a motor; the impeller is positioned in the impeller shell; the motor is used for driving the impeller to work; the fan is characterized in that the impeller shell comprises an outer shell and an inner shell; the outer shell comprises an air inlet and an air outlet; the inner shell is roughly conical or roughly truncated conical; the outer shell comprises an inlet section shell of a roughly truncated conical shape and an outlet section shell positioned at the downstream of the inlet section shell; one part of the inner shell is positioned in the air inlet of the outer shell, and the other part of the inner shell is positioned outside the air inlet of the outer shell; and the inner shell comprises a supporting layer and a sound absorbing layer. According to the fan, the airflow transport efficiency can be improved, and the noise can be reduced.

Description

technical field [0001] The invention relates to a fan. In particular, but not exclusively, the present invention relates to domestic fans, such as desk fans, for use in generating air circulation and air flow in a room, office or other domestic environment. Background technique [0002] 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 air stream creates "wind cooling", which cools the user as heat is dissipated by convection and evaporation. [0003] 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. Desk fans are usually free to place and portable. Tower fans typically include an elongated, vertically extending housing that houses a set of blades for creating airflow, using an oscillating ...

Claims

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Application Information

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IPC IPC(8): F04D25/08F04D29/66F04D29/26F04D29/40F04B41/06F04F5/46
CPCF04B41/06F04D25/0606F04D25/08F04D29/26F04D29/403F04D29/664F04D29/668F04F5/46
Inventor 任文华
Owner 许彐琼
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