DIFFUSER, CENTRIFUGAL COMPRESSION POWER SYSTEM AND BLADELESS FAN

• US 20180030998A1
• Filed: 11/30/2015
• Published: 02/01/2018
• Est. Priority Date: 03/12/2015
• Status: Active Grant

• Current Assignee: GD Midea Environment Appliances Manufacturing Company Limited (Midea Group Co., Ltd), Midea Group Co., Ltd
• Original Assignee: GD Midea Environment Appliances Manufacturing Company Limited (Midea Group Co., Ltd), Midea Group Co., Ltd
• Inventors: Dou, Hai, Ma, Lie, Shao, Chen
• Granted Patent: US 10,634,163 B2
• Time in Patent Office: Days
• CPC Class Codes: F04D 17/10 for compressing or evacuating
• CPC Class Codes: F04D 25/08 the working fluid being air, e.g. for ventilation
• CPC Class Codes: F04D 29/441 especially adapted for elastic fluid pumps
• CPC Class Codes: F04D 29/624 especially adapted for elastic fluid pumps

Abstract

A diffuser includes a lower element and an upper element. The upper element is fixed on the lower element, and the upper element and the lower element are formed separately. The lower element includes a lower inner wall and a lower outer wall, and the upper element includes 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, and the internal air-guiding surface is disposed opposite to the external air-guiding surface to define an air-guiding channel for air flow diffusion. The upper element further includes an upper air-guiding wing for connecting the upper inner wall and the upper outer wall, and the lower element further includes a lower air-guiding wing for connecting the lower inner wall and the lower outer wall.

Claims

1. A diffuser, comprising:

a lower element; and

an upper element fixed on the lower element,

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.

2. The diffuser according to claim 1, wherein a plurality of air-guiding wings is provided equiangularly.

3. The diffuser according to claim 1, wherein a through hole is formed in the internal air-guiding surface, and the through hole is located between two adjacent lower air-guiding wings.

4. The diffuser according to claim 1, wherein the upper element is connected to the lower element through a screw.

5. A centrifugal compression power system, comprising:

a diffuser according to claim 1.

6. The centrifugal compression power system according to claim 5, further comprising:

a motor, and an impeller connected to the motor, wherein the motor is located between the diffuser and the impeller, and the diffuser is connected downstream of an airflow produced by the impeller.

7. A bladeless fan, comprising:

a centrifugal compression power system, wherein the centrifugal compression power system comprises a diffuser according to claim 1.