Fan

Abstract

The invention discloses a fan. The fan comprises a first shell, a second shell, a communicating pipe and a draught fan component, wherein an air inlet and a first annular air outlet at intervals with each other are formed in the first shell, the second shell is arranged at one side in the axial direction of the first shell and at intervals with the first shell, a second annular air outlet is formed in the second shell, the communicating pipe is arranged between the first shell and the second shell and communicating the first shell with the second shell, the draught fan component is arranged in the first shell and located between the air inlet and the first annular air outlet, the draught fan component is used for leading air outside the first shell from the air inlet into the first shell, the air flowing into the first shell is suitable for flowing out from the first annular air outlet to the outside of the first shell and flowing out of the communicating pipe into the second shell, and the air flowing into the second shell is suitable for being sent out from the second annular air outlet. According to the fan, the effects of overall air supplying of the large air volume, the far distance and the 360-degree range can be effectively achieved.

Description

technical field [0001] The invention relates to the field of fan equipment, in particular to a fan. Background technique [0002] In related technologies, household fans usually adjust the air supply angle of the fan by swinging or rotating the machine head. However, due to the limitation of the fan structure, the air supply angle of the fan is usually less than 360°, which cannot achieve all-round air supply. In the related art, there is a fan that achieves a 360° wind effect by installing a trumpet-shaped air outlet above the axial flow wind wheel, but this type of fan has a large energy loss, a low air volume, and a long blowing distance. Short, it is difficult to meet the needs of life. If the air supply volume of the fan is increased, the air supply noise of the fan will also increase, which will affect the user's use. [0003] In addition, there is also a bladeless fan in the related art. This kind of fan uses the principle of an air amplifier to pull the surrounding ...

AI Technical Summary

Problems solved by technology

[0002] In related technologies, household fans usually adjust the air supply angle of the fan by swinging or rotating the machine head. However, due to the limitation of the fan structure, the air supply angle of the fan is usually less than 360°, which cannot achieve all-round air supply. In the related art, there is a fan that achieves a 360° wind effect by installing a trumpet-shaped air outlet above the axial flow wind wheel, but this type of fan has a large energy loss, a low air volume, and a long blowing distance. Short, it is difficult to meet the needs of life. If the air supply volume of the fan is increased, the air supply noise of the fan will also increase, which will affect the user's use

[0003] In addition, there is also a bladeless fan in the related art. This kind of fan uses the principle of an air amplifier to pull the surrounding air with less air to form a larger airflow field to achieve the purpose of comfortable air supply. However, as the impeller of the fan power system The diameter is small, if you want to make the main air flow have a higher air pressure, you need to make the impeller have a high speed, so that the manufacturing process of the motor and the impeller is very high, so that the manufacturing cost of the fan will rise accordingly

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