Low NOx liquid fuel oil atomizer spray plate and fabrication method thereof
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United States of America Patent
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-
Nov 9, 2004
Grant Date -
Jul 24, 2003
app pub date -
Jan 24, 2002
filing date -
Jan 24, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An atomizer spray plate is provided for discharging fuel oil. The spray plate has a cylindrical rear portion and a conical front portion. A frusto-conical whirl chamber extends from the rear portion to the front portion with a decreasing radius. The rear portion includes a number of whirl slots extending radially inward from an outboard region of the rear portion to the whirl chamber to provide the fuel oil with rotational energy. A discharge slot is provided in the front portion of the spray plate for receiving fuel oil from the whirl chamber with rotational energy. The discharge slot includes a cylindrical through-hole with a diameter d, and at least three lobes (slots) equally spaced about the through-hole and oriented in a radial direction, each lobe having a semi-circular cross-section with radius r and extending approximately perpendicular to a central longitudinal axis of the through-hole.
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