Blower
AssigneeMilwaukee Electric Tool Corporation
InventorsAdam Czerwonka, Adam Ostrowski
Life of this patent
Estimating the term…
Abstract
Blowers, e.g., for use in outdoor applications, are provided. A blower includes an air inlet; an air outlet; and a fan assembly disposed between the air inlet and the air outlet. The fan assembly has a multi-stage fan. The multi-stage fan includes a plurality of axial fans mounted on a drive shaft and a plurality of stator fans arranged in series with the axial fans, wherein each axial fan comprises a plurality of blades each having a blade tip. Each stator fan includes a stackable housing segment. Each of the stackable housing segments are coupled together in series to form the blower housing.
Claims20
A blower comprising:
- a blower housing;
- an air inlet;
- an air outlet;
- and
- a fan assembly disposed between the air inlet and the air outlet, wherein the fan assembly comprises a multi-stage fan,
- wherein the multi-stage fan comprises a plurality of axial fans mounted on a drive shaft and a plurality of stator fans arranged in series with the axial fans,
- wherein each axial fan and each stator fan comprises an inlet side and an outlet side, wherein the inlet side is disposed nearer to the air inlet than the outlet side, and wherein the outlet side is disposed nearer to the air outlet than the inlet side,
- wherein each axial fan comprises a plurality of blades each having a blade tip, and
- wherein each stator fan comprises a stackable housing segment, wherein each of the stackable housing segments are coupled together in series to form the blower housing.
A blower comprising:
- a blower housing;
- an air inlet;
- an air outlet;
- and
- a fan assembly disposed between the air inlet and the air outlet, wherein the fan assembly comprises a three-stage fan,
- wherein the three-stage fan comprises three axial fans mounted on a drive shaft and three stator fans arranged in series with the axial fans,
- wherein each axial fan and each stator fan comprises an inlet side and an outlet side, wherein the inlet side is disposed nearer to the air inlet than the outlet side, and wherein the outlet side is disposed nearer to the air outlet than the inlet side,
- wherein each axial fan comprises a plurality of blades each having a blade tip,
- wherein a blade hub inlet angle at the hub is greater than a blade hub outlet angle of each blade at the hub.
A blower comprising:
- a blower housing;
- an air inlet;
- an air outlet;
- and
- a fan assembly disposed between the air inlet and the air outlet, wherein the fan assembly comprises a three-stage fan,
- wherein the three-stage fan comprises three axial fans mounted on a drive shaft and three stator fans arranged in series with the axial fans,
- wherein each axial fan and each stator fan comprises an inlet side and an outlet side, wherein the inlet side is disposed nearer to the air inlet than the outlet side, and wherein the outlet side is disposed nearer to the air outlet than the inlet side,
- wherein each axial fan comprises a plurality of blades each having a blade tip,
- wherein a blade tip inlet angle at the inlet side of the blade tip is greater than a blade tip outlet angle at the outlet side of the blade tip.
Dependencies are inferred from the claim text.