Fan hub configuration for an electric motor assembly
A technology for electric motors and fans, applied in the direction of electric components, electrical components, engine functions, etc., can solve the problems of limited product available space, low efficiency, large size, etc.
Inactive Publication Date: 2021-06-11
REGAL BELOIT AMERICA
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
At least some known motor assemblies are relatively large relative to the size of the equipment in which they will be used, thus limiting the placement of the motor assembly within the equipment and the product space available within the equipment
Additionally, at least some known motor assemblies direct less air than necessary at a predetermined speed and static pressure and are therefore less efficient
In order to direct the desired amount of air, some such known motor assemblies rotate at a higher than desired speed, which produces undesirable noise
Method used
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Embodiment Construction
[0021] Embodiments described herein relate to motor assemblies used to move air in refrigeration appliances and other applications. The motor assembly includes a motor, a fan assembly coupled to the motor and configured to rotate about an axis therewith, and a shroud coupled to the motor and extending about the fan assembly. The shroud includes a central hub coupled to the electric motor, an inlet ring, and a plurality of arms extending between the central hub and the inlet ring. Each of the plurality of arms includes a curved radial portion extending from the central hub and a straight axial portion extending from the radial portion to the inlet ring. The fan assembly includes a hub including a cylindrical portion and an inlet surface coupled to an inlet end of the cylindrical portion. The fan assembly also includes a plurality of blades coupled to the outer periphery of the cylindrical portion, wherein the inlet surface is tapered to direct the inlet airflow toward the plur...
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A electric motor assembly includes an electric motor and a fan assembly coupled to the electric motor and configured to rotate therewith about an axis. The fan assembly includes a hub including a core ring, a first inner ring circumscribing the core ring, and a first plurality of circumferentially-spaced ribs extending between the core ring and the first inner ring. The hub also includes a second inner ring circumscribing the first inner ring and a second plurality of circumferentially-spaced ribs extending between the first inner ring and the second inner ring, and a plurality of circumferentially-spaced blades coupled to an outer periphery of the hub.
Description
[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent Application No. 16 / 709,267, filed December 10, 2019, the entire contents of which are hereby incorporated by reference. technical field [0003] The following disclosure relates generally to electric motor assemblies and, more particularly, to fan shroud configurations for electric motor assemblies. Background technique [0004] Motor assemblies are used in commercial refrigeration equipment such as display cases, drawer coolers, ice makers, and other equipment to blow air to cool the product inside the equipment. At least some known motor assemblies are relatively large relative to the size of the equipment in which they will be used, thus limiting the placement of the motor assembly within the equipment and the product space available within the equipment. Additionally, at least some known motor assemblies direct less air than necessary at a predetermine...
Claims
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IPC IPC(8): F04D29/32F04D29/38F04D29/66F04D25/08H02K7/14
CPCF04D29/329F04D29/388F04D29/662F04D29/666F04D25/08F04D25/06H02K7/14F05D2230/10F05D2230/64F05D2260/94F04D19/002F04D25/0613F04D29/326F04D29/384F04D29/667F05D2240/304
Inventor J·G·罗宾逊N·库马里Y·杨
Owner REGAL BELOIT AMERICA