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US 2020/0003227 A1Published application
Double-suction centrifugal fan
AssigneeDaikin Industries, Ltd.
InventorsAzumi KOJIMA, Takashi KASHIHARA
Life of this patent
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Abstract
A double-suction centrifugal fan includes: a first impeller coupled to a shaft; a second impeller provided with a second inlet port opened opposite to an electric motor and coupled to the shaft at a position farther from the electric motor than the first impeller; a first bell mouth connected to a first inlet port of the first impeller, and a second bell mouth connected to the second inlet port of the second impeller. An axial length L2 of the second bell mouth is greater than an axial length L1 of the first bell mouth.
Claims4
A double-suction centrifugal fan, comprising:
- an electric motor having a shaft;
- a first impeller provided with a first inlet port opened toward the electric motor, and coupled to the shaft;
- a second impeller provided with a second inlet port opened opposite to the electric motor, and coupled to the shaft at a position farther from the electric motor than the first impeller;
- a first bell mouth provided at the first inlet port of the first impeller;
- and
- a second bell mouth provided at the second inlet port of the second impeller, wherein
- an axial length L2 of the second bell mouth is greater than an axial length L1 of the first bell mouth.
4 more elements
Dependencies are inferred from the claim text.