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公开(公告)号：US11708973B2
公开(公告)日：2023-07-25
申请号：US16827284
申请日：2020-03-23
发明人： Michael J. O'Donnell
摘要： A fuel burner includes a tube extending from a first end to a second end and having an outer surface and an inner surface defining a central passage. The central passage is supplied at the first end with a mixture of air and combustible fuel pre-mixed upstream of the tube. The second end is closed by an end wall in a fluid-tight manner. The tube includes fluid directing structure for directing the pre-mixed mixture radially outward from the central passage to an exterior of the tube such that the pre-mixed mixture rotates radially about the central axis along the exterior of the tube.
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公开(公告)号：US20210254860A1
公开(公告)日：2021-08-19
申请号：US17176544
申请日：2021-02-16
摘要： A burner for use with an igniter for firing a flame into a heat-exchanger includes a body having a sidewall that defines an interior chamber. A first opening in the body receives a pre-mixed mixture of air and fuel. A second opening in the body is in fluid communication with the first opening. A distributor is connected to the body and closes the second opening. The distributor includes a first portion and at least one curved second portion provided on the first portion. Each second portion includes a plurality of first perforations in fluid communication with the first opening in the body. The first perforations of one second portion are positioned adjacent to the igniter such that ignition of the pre-mix mixture flowing through the first perforations results in a flame through the second portion. A flange extends around the first portion and includes second perforations.
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公开(公告)号：US11747046B2
公开(公告)日：2023-09-05
申请号：US17588913
申请日：2022-01-31
发明人： Michael J. O'Donnell
CPC分类号： F24H9/0031 , F24H1/0027 , F28F1/40
摘要： A heat exchanger for a water heater having a burner includes a tube extending longitudinally along a centerline from a first end adjacent the burner to a second end. The tube defines a passage. Strips extend within the passage and are arranged about the centerline. Each strip includes a base and fins extending from opposite sides of the base such that flue gases from the burner flow from the first end to the second end of the outer tube and in channels between the fins.
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公开(公告)号：US11530814B2
公开(公告)日：2022-12-20
申请号：US16484169
申请日：2018-03-12
发明人： Michael J. O'Donnell
摘要： A flow control device for an appliance including a burner and a blower for delivering a pre-mixed mixture of air and gas to the burner includes a flange defining an opening through which the pre-mixed mixture of air and gas flows from an outlet of the blower to the burner. A damper plate is provided in the opening downstream of the blower for increasing a static pressure at the outlet of the blower during ignition of the burner.
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公开(公告)号：US20210388981A1
公开(公告)日：2021-12-16
申请号：US17338752
申请日：2021-06-04
发明人： Michael J. O'Donnell
摘要： A fuel burner includes a tube extending along a centerline from a first end to a second end and having an outer surface and an inner surface defining a central passage. The central passage is supplied at the first end with a mixture of air and combustible fuel pre-mixed upstream of the tube. The second end is closed by an end wall in a fluid-tight manner. The tube has fluid directing structure for directing the pre-mixed mixture radially outward from the central passage to an exterior of the tube such that flames exiting adjacent fluid directing structures extend towards and impinge one another.
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