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Air fan

A fan and concave technology, applied in the field of table fans, can solve the problem of poor airflow uniformity

Inactive Publication Date: 2017-06-13
许彐琼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since this kind of fan has no exposed rotating blades, its safety performance has been greatly improved, but the uniformity of the airflow emitted by the mouth located at or near the front of the nozzle is not good, so it needs to be improved or improved

Method used

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Embodiment Construction

[0023] figure 1 is a schematic front view of the first embodiment of the present invention viewed from the front of the fan, figure 2 yes figure 1 Side view of the fan shown. From figure 1 and figure 2 It can be seen from the figure that the fan 100 includes a base 2 and a nozzle 1 located on the base 2 . The base 2 comprises a base 10 and a substantially cylindrical base 8 on the base 10 . The base 8 includes an air inlet 9 in the form of a plurality of holes formed on a side wall of the base 8 and a plurality of buttons 11 , 12 and 13 operable by the user. Air outside the fan is sucked into the base 8 through the air inlet 9 . In this embodiment, the height of the base 8 is 300 mm, and the diameter of the base 8 is 155 mm.

[0024] image 3 is along figure 1 A partial enlarged cross-sectional view taken along line A—A in middle. From image 3 It can be seen that a device for generating airflow is provided in the cylindrical housing 21 of the base 8, and the devi...

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PUM

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Abstract

The invention discloses an air fan. The air fan comprises a device for generating airflow and a nozzle. The nozzle comprises an outer shell, an inner shell surrounded by the outer shell, an inside channel and a nozzle part; at least one part of the inner shell defines a hole with the hole axis, the inside channel is located between the inner shell and the outer shell and extends around the hole axis, and the nozzle part is located at the front part of the nozzle or located nearby the front part of the nozzle; the air fan is characterized in that the cross section of the inside channel comprises a concave area, at least one part of the concave area is defined by the inner surface of the inner shell, at least one part of the portion, used for defining the concave area, of the inner surface of the inner shell can stop a part of airflow in the inside channel from flowing to the nozzle part. The air fan can output the airflow with the good evenness.

Description

technical field [0001] The invention relates to a fan. In particular, but not exclusively, the present invention relates to a fan that can be placed on the floor or on a table, such as a desk fan, tower fan or floor fan. Background technique [0002] ] A traditional household fan usually consists of a set of blades that rotate around an axis and a motor for driving the rotation of the set of blades to generate air flow. The set of blades is typically located within a cage that allows airflow to pass through while preventing human access to the set of rotating blades. [0003] Such fans can be of various sizes and shapes. For example, ceiling fans may have a diameter of at least 1000 millimeters and are typically mounted in a suspended fashion from the ceiling to provide downward airflow. As another example, desk fans typically have a diameter of 300 millimeters and are typically free standing and easy to move. Other types of fans can be placed on the floor or mounted on ...

Claims

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Application Information

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IPC IPC(8): F04F5/16F04F5/46
CPCF04D25/08F04F5/16F04F5/46
Inventor 任文华李佳宸李金山李业生
Owner 许彐琼