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Air circulation fan

An air circulation and fan blade technology, applied in pump control, components of pumping devices for elastic fluids, non-variable-capacity pumps, etc., can solve the problems of large resistance loss of spiral airflow and reduced air volume.

Pending Publication Date: 2021-09-14
XIAMEN VORK HEALTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, changing the distance of the air outlet duct (i.e. the gathering distance), the longer the distance, the greater the resistance loss along the course of the blown spiral airflow, and the air volume will decrease

Method used

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  • Air circulation fan
  • Air circulation fan
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] refer to Figure 1 to Figure 8 As shown, the present embodiment provides an air circulation fan, including an outer shell 10 having an air inlet and an air outlet, a fan blade 20 disposed inside the outer shell 10, and a driving assembly (not shown) for driving the fan blade 20 to rotate, Define the position of the outer casing 10 between the air inlet and the fan blade 20 as the air inlet section, the air inlet section of the outer casing 10 is a retractable structure, specifically, in this embodiment, the outer casing 10 includes a cylindrical and the first housing 11 and the second housing 12 nested in each other, the first housing 11 is a fixed housing with a first inlet and a first outlet, and the fan blade 20 and the driving assembly are arranged on the first Inside the housing 11, the second housing 12 has a second inlet and a second outlet, and the second outlet of the second housing 12 is docked with the first inlet of the first housing 11 to achieve a telescop...

Embodiment 2

[0042] The structure of the air circulation fan provided by this embodiment is roughly the same as that of Embodiment 1, the difference is that in this embodiment, the outer casing is an independent casing, and the outer casing is located between the air inlet and the fan blades. The air inlet section is a self-expandable structure, such as an expandable structure similar to a bellows.

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Abstract

The invention provides an air circulation fan. The air circulation fan comprises an outer shell with an air inlet and an air outlet, fan blades arranged in the outer shell and a driving assembly driving the fan blades to rotate, the position, between the air inlet and the fan blades, of the outer shell is defined as an air inlet section, the air inlet section of the outer shell is of a telescopic structure, the distance from the air inlet to the fan blades is changed through stretching and contracting of the air inlet section of the outer shell, and then distance adjustment of an air inlet duct is achieved. By adjusting the distance of the air inlet duct between the air inlet and the fan blades, the air volume can be increased along with increasing of the distance, the air volume is the most visual influence parameter of the fan, the larger the air volume is, the farther the air is blown, and the purpose of increasing the air supply distance can also be achieved. Meanwhile, the uniformity of output airflow is increased, the airflow loss is also influenced by the uniformity of the airflow, and therefore the air volume is influenced, and meanwhile, the higher the uniformity is, the better the air feeling experience is.

Description

technical field [0001] The invention relates to the field of home appliances, in particular to an air circulation fan that can effectively increase the air volume and has good uniformity. Background technique [0002] For air circulation fans with air ducts currently on the market, the length and size of the air ducts are generally designed in a fixed manner. The Chinese invention patent application with the application number 202010401016.9 discloses an air circulation fan. A telescopic wind collecting cover is arranged on the air outlet of the casing, and the distance between the air outlet of the wind collecting cover and the fan blades can be adjusted by stretching the wind collecting cover. The distance can realize the adjustment of the flow gathering distance of the air circulation fan, thereby adjusting the air supply distance. However, if the distance of the air outlet duct is changed (i.e., the flow gathering distance), the longer the distance, the greater the resi...

Claims

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Application Information

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IPC IPC(8): F04D25/08F04D29/52F04D29/66F04D27/00F04D29/64
CPCF04D25/08F04D29/522F04D29/667F04D27/002F04D29/646
Inventor 彭博锋黄军平尹大蓥庄辉阳
Owner XIAMEN VORK HEALTH IND CO LTD
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