Back to results
US 12,402,765 B2Granted
Fan assembly and vacuum cleaner having same
AssigneesJiangsu Midea Cleaning Appliances Co., Ltd., Midea Group Co., Ltd.
InventorsJinxiao Li, Yuqiang Ma, Wenhu Pan, Dekang Wan, Hang Zhao, Meiquan Wu, Mingqiang Gong, Aibing Sun, Fuping Cheng
Life of this patent
Estimating the term…
Abstract
Provided are a fan assembly and a vacuum cleaner having same. The fan assembly includes a housing, an impeller assembly, and a driving member. At least part of the impeller assembly is accommodated in the housing. The impeller assembly includes a plurality of impellers connected in series in an airflow flowing direction of the fan assembly. The driving member is configured to drive the plurality of impellers to rotate.
Claims20
A fan assembly comprising:
- a housing comprising an accommodation cavity with a cross-sectional area that decreases in an airflow flowing direction of the fan assembly;
- an impeller assembly at least partially disposed in the housing and comprising a first-level impeller and a second-level impeller connected in series in the airflow flowing direction;
- a flow guide member at least partially disposed within the accommodation cavity of the housing, the flow guide member and the accommodation cavity of the housing being configured to guide and discharge output air of the first-level impeller to the second-level impeller, the flow guide member having a cross-sectional area that decreases in the airflow flowing direction;
- and
- a driving member configured to cause the first-level impeller and the second-level impeller to rotate,
- wherein:
- the accommodation cavity of the housing forms one or more grooves formed axially through the accommodation cavity;
- and
- the flow guide member includes one or more post protrusions configured to interface with respective grooves of the one or more grooves of the accommodation cavity.
6 more elements
A fan assembly comprising:
- a housing comprising an accommodation cavity with a cross-sectional area that decreases in an airflow flowing direction of the fan assembly;
- an impeller assembly at least partially disposed in the housing and comprising a first-level impeller and a second-level impeller connected in series in the airflow flowing direction;
- a flow guide member at least partially disposed within the accommodation cavity of the housing, the flow guide member and the accommodation cavity of the housing being configured to guide and discharge output air of the first-level impeller to the second-level impeller, the flow guide member having a cross-sectional area that decreases in the airflow flowing direction;
- and
- a driving member configured to cause the first-level impeller and the second-level impeller to rotate,
- wherein an outer diameter of the first-level impeller is D11, an outer diameter of the second-level impeller is D21, a spacing between the first-level impeller and the second-level impeller in an axial direction of the fan assembly is L1, and a spacing between the flow guide member and the second-level impeller in the axial direction of the fan assembly is L2, where 1.27D11/L11.87, 1.27D21/L11.87,and 0.13L2/L10.26.
3 more elements
Dependencies are inferred from the claim text.