Air-Guiding Casing of a Ventilation Fan

• US 20150184878A1
• Filed: 10/28/2014
• Published: 07/02/2015
• Est. Priority Date: 12/26/2013
• Status: Active Grant

• Current Assignee: Sunonwealth Electric Machine, Ind. Co., Ltd.
• Original Assignee: Sunonwealth Electric Machine, Ind. Co., Ltd.
• Inventors: Su, Chia-Hung, Lin, Cheng-Wei, Huang, Ho-Min, Kuo, Chi-Hung
• Granted Patent: US 9,746,196 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F04D 25/14 and having shutters, e.g. automatically closed when not in use
• CPC Class Codes: F04D 29/4226 Fan casings
• CPC Class Codes: F04D 29/626 Mounting or removal of fans
• CPC Class Codes: F24F 7/007 with forced flow using ducting systems F24F7/06

Abstract

An air-guiding casing of a ventilation fan includes a main body and an air-guiding tube. The main body forms a compartment and includes an inlet and an outlet. The inlet and the outlet are in communication with the compartment. A first engaging portion is arranged on a part of an edge of the outlet and on one side of the main body. The air-guiding tube has an engaging end and an outlet end opposite to the engaging end. A second engaging portion is arranged on the engaging end. The first and second engaging portions are engaged with each other.

Claims

1. An air-guiding casing of a ventilation fan, comprising:

a main body forming a compartment and comprising an inlet and an outlet, wherein the inlet and the outlet are in communication with the compartment, and wherein a first engaging portion is arranged on a part of an edge of the outlet and on one side of the main body; and

an air-guiding tube having an engaging end and an outlet end opposite to the engaging end, wherein a second engaging portion is arranged on the engaging end, and wherein first and second engaging portions are engaged with each other.

2. The air-guiding casing of the ventilation fan as claimed in claim 1, wherein the main body further comprises a base plate and a plurality of side plates arranged at an outer periphery of the base plate, wherein the base plate and the plurality of side plates together define the compartment, and wherein the outlet is arranged on one of the plurality of side plates.

3. The air-guiding casing of the ventilation fan as claimed in claim 2, wherein two opposing wings are arranged on the one of the plurality of side plates, wherein the two opposing wings are located at the part of the edge of the outlet, wherein each of the two opposing wings comprises at least one engaging hole, wherein two opposing guiding plates are arranged at the engaging end of the air-guiding tube, wherein each of the two opposing guiding plates comprises at least one hook engaged with the at least one engaging hole.

4. The air-guiding casing of the ventilation fan as claimed in claim 3, wherein the two opposing wings are spaced from each other at a first distance, wherein the two opposing guiding plates are spaced from each other at a second distance, and wherein the second distance is slightly larger than the first distance.

5. The air-guiding casing of the ventilation fan as claimed in claim 3, wherein the two opposing wings are spaced from each other at a first distance, wherein the two opposing guiding plates are spaced from each other at a second distance, and wherein the second distance is equal to the first distance.

6. The air-guiding casing of the ventilation fan as claimed in claim 2, wherein two opposing positioning plates are arranged on another part of the edge of the outlet, wherein the two opposing positioning plates are located between the two opposing wings to position the air-guiding tube.

7. The air-guiding casing of the ventilation fan as claimed in claim 1, wherein a rotatable dustproof plate is arranged in the air-guiding tube.