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US 2022/0178382 A1Published application
Blower and heat pump unit
AssigneeDaikin Industries, Ltd.
InventorsHiroki ANDOU, Takashi ONO, Toshihiro MORI
Life of this patent
Estimating the term…
Abstract
A blower includes a propeller fan, and an enclosure. The propeller fan is configured to rotate around a rotation axis. The propeller fan includes a plurality of blades at unequal pitches. The enclosure houses the propeller fan. The enclosure includes a bell mouth. The enclosure has a depth L. The bell mouth includes a cylindrical part parallel to the rotation axis. 0.14 ≤ H 2 H 0 ≤ 0.22 # A length of the blades is H0 in a rotation axis direction, and a length of the cylindrical part is H2 in the rotation axis direction.
Claims20
A blower comprising:
- a propeller fan configured to rotate around a rotation axis, the propeller fan including a plurality of blades at unequal pitches;
- and
- an enclosure housing the propeller fan, the enclosure including a bell mouth, and the enclosure having a depth L,
- the bell mouth including a cylindrical part parallel to the rotation axis, and
- 0.14
- ≤
- H
-
-
- 2
- H
-
-
- 0
- ≤
- 0.22
-
- #
- with a length of the blades being H0 in a rotation axis direction and a length of the cylindrical pad:
- being H in the rotation axis direction.
17 more elements
A blower comprising:
- a propeller fan configured to rotate around a rotation axis, the propeller fan including a plurality of blades at unequal pitches;
- and
- an enclosure housing the propeller fan, the enclosure including a bell mouth, and the enclosure having a depth L,
- the bell mouth including a cylindrical part parallel to the rotation axis, and
- 0.045
- ≤
- H
-
-
- 2
- ϕ
- ≤
- 0.070
-
- #
- with a diameter of the propeller fan being φ and a length of the cylindrical part in the rotation axis direction being H2.
13 more elements
Dependencies are inferred from the claim text.