Electric fan and vacuum cleaner having same

Abstract

The invention discloses an electric fan and a vacuum cleaner thereof. The electric fan comprises: a cover, one side of which is open; an impeller, which is arranged in the cover; a diffuser, the The diffuser includes a diffuser body and a plurality of blades, the diffuser body is located on the side of the impeller adjacent to the cover, and the plurality of blades are arranged on the diffuser body Adjacent to one end of the impeller and arranged at intervals along the outer circumference of the impeller, the outlet angle of each of the blades is β, wherein the β satisfies: 45°≤β≤90°; a reflux device, the reflux device is set at the end of the diffuser body away from the impeller. According to the electric fan of the present invention, the blades of the diffuser are arranged on the outer periphery of the impeller, and the outlet angle β of each blade satisfies 45°≤β≤90°, thereby ensuring the aerodynamic performance of the electric fan while improving the efficiency of the electric fan.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to an electric fan and a vacuum cleaner with the same. Background technique [0002] The high-efficiency, energy-saving and low-noise characteristics of vacuum cleaners are one of the important trends in its development, and the electric fan for vacuum cleaners is the core functional component of vacuum cleaners, so reasonable aerodynamic design and structural design of electric fans can effectively improve the performance of vacuum cleaners and reduce energy consumption , improve the noise level and sound quality of the vacuum cleaner, thereby significantly improving user satisfaction and enhancing the selling point of vacuum cleaner products. At the same time, the heat dissipation problem of the motor is also a technical problem of the electric fan used in the vacuum cleaner. Good heat dissipation can solve the temperature rise problem of the electric fan and prolong the servic...

AI Technical Summary

Problems solved by technology

In related technologies, some electric fans for vacuum cleaners use vaneless diffusers. Because the control effect of the vaneless diffuser on air flow is insufficient, especially the application scenarios where the radial size of electric fans for vacuum cleaners is small and the airflow turning distance , it is easy to cause the air flow to be chaotic, thereby reducing the aerodynamic performance of the electric fan; other electric fans for vacuum cleaners use conventional vaned diffusers, and the tangential velocity of the airflow at the blade outlet of this conventional vaned diffuser is relatively large , so that the tangential velocity is not utilized and basically wasted, and the flow velocity of the airflow is relatively high, and the flow loss in the flow channel of the above-mentioned conventional bladed diffuser is relatively large, making the efficiency of the electric fan low

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