US 2026/0226918 A1Published application

Centrifugal fan module, cooling device, and refrigerator including the same

AssigneeSamsung Electronics Co., Ltd.

InventorsHyunjoo KIM, Dongbum LEE, Seungjin LEE, Sejin YUN

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Abstract

A centrifugal fan module including: an impeller rotating around a rotation axis to intake air through an intake port and discharge air toward an exhaust port; an intake guide channel having an inclined section with a height that decreases toward the intake port; and an exhaust guide channel including: a spiral radius that increases along a spiral direction toward the exhaust port; a cut-off area; an exhaust area connected to the exhaust port; a wedge area below the inclined section between the cut-off area and the exhaust area along the spiral direction; a first transition area between the cut-off wedge areas, the first transition area having a cross-section that changes from a quadrilateral cross-section to a wedge cross-section; and a second transition area between the wedge and exhaust areas, the second transition area having a cross-section that changes from a wedge cross-section to a quadrilateral cross-section.

Claims20

Dependent claims

A centrifugal fan module comprising:

an impeller configured to rotate around a rotation axis, to draw in air through an intake port, and to discharge the air toward an exhaust port;
an intake guide channel configured to guide the air toward the intake port, the intake guide channel comprising an inclined section comprising a height that decreases in a direction toward the intake port;
and
an exhaust guide channel configured to guide the air toward the exhaust port,
wherein the exhaust guide channel comprises:
a spiral radius that increases along a spiral direction toward the exhaust port;
a cut-off area comprising a quadrilateral cross-sectional shape;
an exhaust area connected to the exhaust port and comprising a quadrilateral cross-sectional shape;
a wedge area between the cut-off area and the exhaust area along the spiral direction, wherein the wedge area is below the inclined section in a direction parallel to the rotation axis, and wherein the wedge area comprises a wedge cross-sectional shape;
a first transition area between the cut-off area and the wedge area along the spiral direction, the first transition area comprising a cross-sectional shape that changes from a quadrilateral cross-sectional shape to a wedge cross-sectional shape along the spiral direction;
and
a second transition area between the wedge area and the exhaust area along the spiral direction, the second transition area comprising a cross-sectional shape that changes from a wedge cross-sectional shape to a quadrilateral cross-sectional shape along the spiral direction.

9 more elements

A cooling device comprising:

a cooling element comprising a plate shape, the cooling element comprising a first surface configured to dissipate heat and a second surface that is opposite to the first surface and that is configured to absorb heat from an outside;
a heat sink above the cooling element and configured to dissipate heat from the first surface;
and
a heat absorption portion below the cooling element and configured to transfer cold air from the second surface to surrounding air,
wherein the heat sink comprises a heat sink member on the first surface and a centrifugal fan module configured to transfer outside air to the heat sink member,
wherein the centrifugal fan module comprises:
an impeller configured to rotate around a rotation axis to draw in air through an intake port, and to discharge the air toward an exhaust port;
an intake guide channel configured to guide the air toward the intake port, the intake guide channel comprising an inclined section comprising a height that decreases in a direction toward the intake port;
and
an exhaust guide channel configured to guide the air toward the exhaust port, and
wherein the exhaust guide channel comprises:
a spiral radius that increases along a spiral direction toward the exhaust port;
a cut-off area comprising a quadrilateral cross-sectional shape;
an exhaust area connected to the exhaust port and comprising a quadrilateral cross-sectional shape;
a wedge area between the cut-off area and the exhaust area along the spiral direction, wherein the wedge area is below the inclined section in a direction parallel to the rotation axis, and wherein the wedge area comprises a wedge cross-sectional shape;
a first transition area between the cut-off area and the wedge area along the spiral direction, the first transition area comprising a cross-sectional shape that changes from a quadrilateral cross-sectional shape to a wedge cross-sectional shape along the spiral direction;
and
a second transition area between the wedge area and the exhaust area along the spiral direction, the second transition area comprising a cross-sectional shape that changes from a wedge cross-sectional shape to a quadrilateral cross-sectional shape along the spiral direction.

15 more elements

A refrigerator comprising:

a cooling device comprising:
a cooling element comprising a plate shape, the cooling element comprising a first surface configured to dissipate heat and a second surface that is opposite to the first surface and that is configured to absorb heat from an outside;
a heat sink above the cooling element and configured to dissipate heat from the first surface;
and
a heat absorption portion below the cooling element and configured to transfer cold air from the second surface to surrounding air;
and
a storage area configured to receive the cold air provided by the cooling device,
wherein the heat sink comprises a heat sink member on the first surface and a centrifugal fan module configured to transfer outside air to the heat sink member,
wherein the centrifugal fan module comprises:
an impeller configured to rotate around a rotation axis to draw in air through an intake port, and to discharge the air toward an exhaust port;
an intake guide channel configured to guide the air toward the intake port, the intake guide channel comprising an inclined section comprising a height that decreases in a direction toward the intake port;
and
an exhaust guide channel configured to guide the air toward the exhaust port, and
wherein the exhaust guide channel comprises:
a spiral radius that increases along a spiral direction toward the exhaust port;
a cut-off area comprising a quadrilateral cross-sectional shape;
an exhaust area connected to the exhaust port and comprising a quadrilateral cross-sectional shape;
a wedge area between the cut-off area and the exhaust area along the spiral direction, wherein the wedge area is below the inclined section in a direction parallel to the rotation axis, and wherein the wedge area comprises a wedge cross-sectional shape;
a first transition area between the cut-off area and the wedge area along the spiral direction, the first transition area comprising a cross-sectional shape that changes from a quadrilateral cross-sectional shape to a wedge cross-sectional shape along the spiral direction;
and
a second transition area between the wedge area and the exhaust area along the spiral direction, the second transition area comprising a cross-sectional shape that changes from a wedge cross-sectional shape to a quadrilateral cross-sectional shape along the spiral direction.

18 more elements

Dependencies are inferred from the claim text.