Combine harvester fan housing assembly
First Claim
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1. A combine harvester fan housing assembly comprising:
- a fan enclosure formed as a single unitary body out of a polymeric material, the fan enclosure comprising;
a spiral duct spiraling about an axis, the spiral duct comprising a U-shaped channel having a mouth facing in a radial direction towards the axis;
a first axial inlet opening sized to axially receive a fan therethrough and a second axial inlet opening; and
a discharge duct extending from the spiral duct; and
an inlet ring releasably mounted to the fan enclosure about the first axial opening, the inlet ring projecting into the first axial opening by an extent so as to extend radially inward of blade ends of the fan.
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Abstract
A combine harvester fan housing assembly may include a fan enclosure formed as a single unitary body out of a polymeric material. The fan enclosure may include a spiral duct spiraling about an axis, a first axial inlet opening sized to axially receive a fan therethrough and a second axial inlet opening and a discharge duct extending from the spiral duct. The combine harvester fan housing assembly may further include an inlet ring releasably mounted to the fan enclosure about the first axial opening, the inlet ring projecting into the first axial opening by an extent so as to extend radially inward of blade ends of the fan.
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Citations
20 Claims
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1. A combine harvester fan housing assembly comprising:
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a fan enclosure formed as a single unitary body out of a polymeric material, the fan enclosure comprising; a spiral duct spiraling about an axis, the spiral duct comprising a U-shaped channel having a mouth facing in a radial direction towards the axis; a first axial inlet opening sized to axially receive a fan therethrough and a second axial inlet opening; and a discharge duct extending from the spiral duct; and an inlet ring releasably mounted to the fan enclosure about the first axial opening, the inlet ring projecting into the first axial opening by an extent so as to extend radially inward of blade ends of the fan. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A combine harvester comprising:
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a chaffer; a sieve below the chaffer; a series of fan assemblies, each of the fan assemblies comprising; a fan having blades rotatable about an axis, the fan having a first diameter defined by blade ends; a fan enclosure formed as a single unitary body out of a polymeric material, the fan enclosure comprising; a spiral duct spiraling about an axis, the fan, about a first axial inlet opening and a second axial inlet opening, the first axial inlet opening having a second diameter greater than the first diameter of the fan; a first discharge duct extending from the spiral duct in a direction towards the sieve; and a second discharge duct extending from between the spiral duct and the first discharge duct in a direction towards the chaffer; and an inlet ring releasably mounted to the fan enclosure about the first axial opening, the inlet ring projecting into the first axial opening by an extent so as to extend radially inward of the blade ends of the fan. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A combine harvester fan housing assembly comprising:
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a fan enclosure formed as a single unitary body out of a polymeric material, the fan enclosure comprising; a spiral duct spiraling about an axis; a first axial inlet opening sized to axially receive a fan therethrough and a second axial inlet opening; and a discharge duct extending from the spiral duct; and an inlet ring releasably mounted to the fan enclosure about the first axial opening, the inlet ring projecting into the first axial opening by an extent so as to extend radially inward of blade ends of the fan, wherein the inlet ring comprises ring sections individually releasably mountable to the fan enclosure.
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Specification