Back to results
US 6,273,679 B1Granted
Centrifugal blower
AssigneeSamsung Electronics Co., Ltd.
InventorSang-Kwon Na
Life of this patent
Estimating the term…
Abstract
A centrifugal blower comprising a siroco fan having a plurality of blowing fans, and a scroll casing forming a spiral draft passage at an external side of the siroco fan, where a siroco fan is so mounted that spiral centers (02,03) comprising the draft passage of the scroll casing are detached from a center (01) of the siroco fan at a predetermined distance, such that a spiral curve of the scroll casing is simply changed to a non-linear curve to thereby enable to increase a flow rate even at a low revolution of the siroco fan and to reduce noise.
Claims20
A blower, comprising:
- a fan having a plurality of blades and a fan center;
- and
- a casing having a spiral forming a spiral passage around said fan, said spiral having a spiral center spaced-apart from said fan center by a predetermined distance, wherein said spiral of said casing is an Archimedean spiral or an logarithmic spiral.
A blower, comprising:
- a fan having a plurality of blades and a fan center;
- and
- a casing having a spiral forming a spiral passage around said fan, said spiral having a spiral center spaced-apart from said fan center by a predetermined distance, wherein a scroll start point and a scroll end point of said spiral are on the same line such that a scroll angle varies from zero (0) degree to 360 degrees.
A blower, comprising:
- a fan having a plurality of blades fans and a fan center;
- and
- a spiral casing forming a spiral passage around said fan, having a spiral center spaced-apart from said fan center by a predetermined distance, wherein said fan center of said fan is located opposite to a start point of said spiral casing from said spiral center of said spiral casing.
Dependencies are inferred from the claim text.