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Diffuser, centrifugal compression power system and bladeless fan

  • US 10,634,163 B2
  • Filed: 11/30/2015
  • Issued: 04/28/2020
  • Est. Priority Date: 03/12/2015
  • Status: Active Grant
First Claim
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1. A diffuser, comprising:

  • a lower element; and

    an upper element detachably mounted on the lower element by a screw;

    wherein the diffuser is configured to be used in a bladeless fan;

    wherein the upper element and the lower element are formed separately;

    the lower element comprises a lower inner wall and a lower outer wall, and the upper element comprises an upper inner wall and an upper outer wall;

    the upper inner wall is connected to the lower inner wall to form an internal air-guiding surface;

    the upper outer wall is connected to the lower outer wall to form an external air-guiding surface;

    the internal air-guiding surface is disposed opposite to the external air-guiding surface, and an air-guiding channel configured to diffuse an airflow is defined between the internal air-guiding surface and the external air-guiding surface;

    the upper element further comprises an upper air-guiding wing for connecting the upper inner wall and the upper outer wall, and the lower element further comprising a lower air-guiding wing for connecting the lower inner wall and the lower outer wall;

    the upper air-guiding wing is connected to the lower air-guiding wing to form an air-guiding wing for connecting the internal air-guiding surface and the external air-guiding surface;

    wherein the lower outer wall and the upper outer wall forms an outer wall, the lower inner wall and the upper inner wall forms an inner wall, both diameters of the outer wall and the inner wall decrease gradually from a lower end of the diffuser to an upper end of the diffuser;

    wherein the inner wall is shaped as a cone, upper end of the inner wall forms vertex of the cone;

    wherein the airflow flows in the air-guiding channel in a direction from the lower end of the diffuser to the upper end of the diffuser.

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