US2006280596A1PendingUtilityA1
Blower and cleaner including the same
Assignee: SAMSUNG ELECTRONICS CO LTDPriority: Jun 10, 2005Filed: Jan 13, 2006Published: Dec 14, 2006
Est. expiryJun 10, 2025(expired)· nominal 20-yr term from priority
F04D 29/666F05D 2250/52F04D 29/444A47L 5/22A47L 9/0081
45
PatentIndex Score
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Cited by
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Claims
Abstract
A blower designed to reduce noise generated between impeller blades and diffuser blades positioned around the impeller blades upon rotation of an impeller, and a cleaner including the same are disclosed. The diffuser blades are non-uniformly spaced from each other in a circumferential direction such that interaction between the plurality of impeller blades and the plurality of diffuser blades become irregular upon rotation of the impeller. Distances between the impeller blades and the diffuser blades are non-uniform. With this construction, the blower and the cleaner are reduced in BPF noise, thereby enhancing performance thereof.
Claims
exact text as granted — not AI-modified1 . A blower, comprising:
an impeller including a plurality of impeller blades and being rotated by a motor; and a diffuser including a plurality of diffuser blades and being located around an outer periphery of the impeller, wherein the plurality of diffuser blades are non-uniformly spaced from each other in a circumferential direction so as to reduce noise caused by interaction between the plurality of impeller blades and the plurality of diffuser blades upon rotation of the impeller.
2 . The blower according to claim 1 , wherein the plurality of diffuser blades are arranged such that a central angle defined between a pair of adjacent diffuser blades is different from other central angles defined between other pairs of adjacent diffuser blades.
3 . The blower according to claim 2 , wherein, when one of the diffuser blades is defined as a reference blade, a central angle between a diffuser blade located at an xth position from the reference blade and a diffuser blade located at an x- 1 th position from the reference blade is determined by the following Equation:
y
=
y
0
+
a
sin
(
2
π
x
b
+
c
)
in which y 0 =360/n, n=the number of diffuser blades, and a, b, and c are constants.
4 . The blower according to claim 2 , wherein, when one of the diffuser blades is defined as a reference blade, a central angle between a diffuser blade located at an xth position from the reference blade and a diffuser blade located at an x- 1 th position from the reference blade is determined by the following Equation:
y
=
y
0
+
a
ⅇ
-
(
x
/
x
0
)
sin
(
2
π
x
b
+
c
)
in which x 0 =n/2, y 0 =360/n, n=the number of diffuser blades, and a, b, and c are constants.
5 . The blower according to claim 1 , wherein the number of diffuser blades is determined to have no common divisor except for 1 with respect to the number of the impeller blades.
6 . The blower according to claim 1 , wherein distances between the impeller blades and the diffuser blades are non-uniform.
7 . The blower according to claim 6 , wherein at least one of the impeller blades is further spaced at a distal end thereof by a predetermined distance from an associated diffuser blade adjacent to the distal end of the impeller blade, in comparison to distances between other impeller blades and their associated diffuser blades.
8 . The blower according to claim 6 , wherein at least one of the diffuser blades is further spaced at a distal end thereof by a predetermined distance from an associated impeller blade adjacent to the distal end of the diffuser blade, in comparison to distances between other diffuser blades and their associated impeller blades.
9 . A cleaner including a blower, comprising:
an impeller including a plurality of impeller blades and being rotated by a motor; and a diffuser including a plurality of diffuser blades and being located around an outer periphery of the impeller to generate suction force for intake of foreign substances, wherein first ends of the respective diffuser blades adjacent to the impeller are non-uniformly spaced from each other in a circumferential direction so as to allow variation in period of the impeller blades passing the diffuser blades upon rotation of the impeller.
10 . The cleaner according to claim 9 , wherein the plurality of diffuser blades are arranged such that a central angle defined between a pair of adjacent diffuser blades is different from other central angles defined between other pairs of adjacent diffuser blades.
11 . The cleaner according to claim 10 , wherein, when one of the diffuser blades is defined as a reference blade, a central angle between a diffuser blade located at an xth position from the reference blade and a diffuser blade located at an x- 1 th position from the reference blade is determined by the following Equation:
y
=
y
0
+
a
sin
(
2
π
x
b
+
c
)
in which y 0 =360/n, n=the number of diffuser blades, and a, b, and c are constants.
12 . The cleaner according to claim 10 , wherein, when one of the diffuser blades is defined as a reference blade, a central angle between a diffuser blade located at an xth position from the reference blade and a diffuser blade located at an x- 1 th position from the reference blade is determined by the following Equation:
y
=
y
0
+
a
ⅇ
-
(
x
/
x
0
)
sin
(
2
π
x
b
+
c
)
in which x 0 =n/2, y 0 =360/n, n=the number of diffuser blades, and a, b, and c are constants.
13 . The cleaner according to claim 9 , wherein the number of diffuser blades is determined to have no common divisor except for 1 with respect to the number of the impeller blades.
14 . The cleaner according to claim 9 , wherein distances between the impeller blades and the diffuser blades are non-uniform.
15 . The cleaner according to claim 14 , wherein at least one of the impeller blades is further spaced at a distal end thereof by a predetermined distance from an associated diffuser blade adjacent to the distal end of the impeller blade, in comparison to distances between other impeller blades and their associated diffuser blades.
16 . The cleaner according to claim 14 , wherein at least one of the diffuser blades is further spaced at a distal end thereof by a predetermined distance from an associated impeller blade adjacent to the distal end of the diffuser blade, in comparison to distances between other diffuser blades and their associated impeller blades.Join the waitlist — get patent alerts
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