Fan blades and blade impellers and fan components and air conditioning equipment

A fan blade and impeller technology, applied in the field of air-conditioning equipment, can solve problems such as affecting fan performance, and achieve the effects of improving fan efficiency, reducing energy loss, and reducing eddy current noise
CN111894899BActive Publication Date: 2021-07-13GREE ELECTRIC APPLIANCES INC
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
GREE ELECTRIC APPLIANCES INC
Publication Date
2021-07-13

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Abstract

The application provides a fan blade, a fan blade impeller, a fan assembly and an air conditioning device. Wherein the fan blade includes a blade body and a reinforcing part arranged at the blade root of the blade body. Connected with the reinforcing part, the tail end of the guide part extends toward the trailing edge of the blade body. Applying the technical solution of the present invention, since the reinforcing part is located at the leading edge of the blade body, and there is a flow guide part connected to the reinforcement part, on the basis of the reinforcement part reducing the turning angle of the airflow, the flow guide part restrains the air flow on the pressure surface of the blade body. The formation and expansion of the channel vortex at the tail end of the reinforcing part reduces the separation of the airflow of the fan at the blade root of the blade body, reduces the vortex noise, and improves the efficiency of the fan. In this way, the problem of separation of air flow at the root of the impeller caused by the ribs in the past is avoided, energy loss is reduced, and the performance and efficiency of the fan are improved.
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Description

technical field

[0001] The invention relates to the technical field of air-conditioning equipment, in particular, to a fan blade, a fan blade impeller, a fan assembly, and an air-conditioning device. Background technique

[0002] The flow inside the impeller of axial flow fan is three-dimensional, viscous, and unsteady. When the fluid flows through the impeller, various complex vortex systems will be generated inside the impeller, which mainly include scraping vortex, channel vortex, horseshoe vortex, and tip leakage vortex. , leading edge separating vortex and trailing edge shedding vortex, etc. These vortices not only produce a huge energy loss and seriously affect the efficiency of the fan, but also are the main source of the broadband noise of the fan. Therefore, it is of great significance to study how to reduce the vortex flow inside the impeller to improve the performance of the fan. A large number of scholars at home and abroad have studied the internal flow of axi...

Claims

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