Title:
FAN ASSEMBLY FOR VENTILATION DEVICE AND VENTILATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/142690
Kind Code:
A1
Abstract:
A fan assembly used for a ventilation device and the ventilation device. The fan assembly comprises a casing, a fan, and a noise reduction assembly. The casing comprises a first inner cavity, a first air inlet that communicates with the first inner cavity, and a first air outlet that communicates with the first inner cavity. The fan is disposed in the first inner cavity, and the fan is used to drive air to blow out from the first air outlet after entering the first inner cavity from the first air inlet. The noise reduction assembly is disposed in the first inner cavity, and is located between the fan and the first air inlet, and the noise reduction assembly comprises a noise reduction passage that communicates with the first inner cavity and the first air inlet, the noise reduction passage being used to extend a diffusion path of fan noise diffused out from the first air inlet so as to weaken the fan noise. According to the fan assembly provided in the present application, the noise reduction passage of the noise reduction assembly extends the diffusion path of the fan noise diffused out from the first air inlet, so that the fan noise diffused out from the first air inlet can be effectively weakened, and the influence that the noise generated during the running of the fan has on a patient is reduced.
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Inventors:
ZHENG XIN (CN)
YAO GANG (CN)
WU XUETAO (CN)
YAO GANG (CN)
WU XUETAO (CN)
Application Number:
PCT/CN2021/127680
Publication Date:
July 07, 2022
Filing Date:
October 29, 2021
Export Citation:
Assignee:
SHENZHEN MINDRAY BIOMEDICAL ELECTRONICS CO LTD (CN)
International Classes:
F04D29/66; A61M16/01
Foreign References:
| CN104689443A | 2015-06-10 | |||
| CN211536065U | 2020-09-22 | |||
| CN208097087U | 2018-11-16 | |||
| CN211500798U | 2020-09-15 | |||
| CN206637808U | 2017-11-14 | |||
| CN204933091U | 2016-01-06 | |||
| CN204529022U | 2015-08-05 |
Attorney, Agent or Firm:
SHENZHEN LIDAO INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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