Device for automatically adjusting airflow surface of fan

Abstract

The invention relates to the technical field of fan adjustment, and discloses a device for automatically adjusting the airflow surface of a fan. The device comprises a round table support, wherein a circular tube column is fixedly connected to one side of the round table support; a movable head is movably connected to the interior of the circular tube column; a hole is formed in the middle of oneside of the round table support; a rotary clamping shaft is fixedly connected to one side of the movable head through the hole; and a clamping tube is fixedly connected to one side of the interior ofthe round table support. The device is fixed to the fan through a connecting support, the air speed on one side of the movable head is increased or decreased, the air flow speed between the movable head and the circular tube column is not changed, the pressure intensity of a place with the high speed is small according to the Bernoulli principle of fluid mechanics, and therefore the airflow surface is enlarged or decreased, people in work and study can achieve the large-area cooling effect through the device, body discomfort caused by the too low local temperature is avoided, the body surfacecooling efficiency is improved, and the comfort degree during the fan use is increased.

Description

technical field [0001] The invention relates to the technical field of fan adjustment, in particular to a device for automatically adjusting the air flow surface of a fan. Background technique [0002] In the scorching summer, people usually use fans to cool down the body surface. Because it is easy to use and low in cost, it is widely used in daily life families. [0003] When working or studying, because the usable area of ​​the desktop is limited, the size of the fan that can be used is limited. During use, the fan is small, the airflow is concentrated, and the body surface area that can effectively cool down is limited, resulting in local overcooling and poor overall cooling effect; at night Fans are also used to cool down during sleep, but during sleep, the airflow is concentrated, the wind speed is high, and blowing for a long time will cause a series of adverse physiological changes in the human body, resulting in the loss of human health, especially cardiovascular di...

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the use of the existing fan proposed in the background technology, the present invention provides a device for automatically adjusting the air flow surface of the fan, which has the advantage of automatically adjusting the air flow surface and solves the technical problems raised in the above background technology

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