ULTRA-LOW NOx BURNER

a burner and ultra-low technology, applied in the direction of burners, combustion types, combustion processes, etc., can solve the problem of prohibitively expensive cost of applying current single uln system burner technology to multiple section heat exchangers

Pending Publication Date: 2021-08-19
BECKETT THERMAL SOLUTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes two examples of burners for use with igniters for firing a flame into a heat-exchanger. In the first example, a distributor with a curved second portion is connected to the body of the burner and includes first perforations that are positioned next to the igniter to result in a flame through the second portion. This flame helps to ignite the air and fuel mixture. The second example is a device that includes a mixing wheel with openings for receiving air, a nozzle for receiving fuel, and a restrictor plate with openings to help mix the air and fuel for delivery to the burner. These technical improvements can improve the efficiency and reliability of the burner system for heat-exchangers.

Problems solved by technology

The cost of applying current single ULN system burner technologies to multiple section heat exchangers would be prohibitively expensive due to the cost of requiring multiple ULN system burners.

Method used

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Examples

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Embodiment Construction

[0023]The invention relates to burners for appliances and, in particular, relates to an ultra-low-NOx burner that provides flame carryover to accommodate multiple heat exchanger sections in residential and commercial gas-fired furnaces. Alternative appliances in which the burner of the present invention may be used include, for example, water heaters and, ovens.

[0024]FIG. 1 illustrates an example burner 10 for an appliance 20 in accordance with the present invention. The appliance 20 can be any residential or commercial appliance, e.g., furnace, water heater, tankless water heater, oven, etc. The burner 10 can be a pre-mixed burner in which a mixture of air and combustible fuel, e.g., gas, is pre-mixed upstream of the burner or otherwise mixed prior to combustion so that no secondary air is needed. Alternatively, the burner 10 can be a non-premixed burner (not shown).

[0025]In FIG. 1, a mixer 60 is connected to an upstream side of the burner 10. An inducer blower 856 is provided down...

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PUM

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Abstract

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.

Description

RELATED APPLICATIONS[0001]This applications claims priority to U.S. Provisional Application Ser. No. 62 / 977,541, filed Feb. 17, 2020, the entirety of which is incorporated herein by reference.TECHNICAL FIELD[0002]The invention relates to burners for appliances such as furnaces and, in particular, relates to an ultra-low oxides of nitrogen (NOx) burner that provides flame carryover to accommodate multiple heat exchanger tubes in residential and commercial gas-fired furnaces.BACKGROUND[0003]Recently, new NOx emission requirements for residential gas-fired central furnaces have been implemented in an effort to reduce the environmental impact of their use. A few types of burners used on different types of gas-fired appliances are capable of meeting the specified NOx level. None, however, have been successfully applied to a residential gas-fired furnace of the type to which this invention pertains, for several reasons. In particular, the current burners are designed to fire into a single...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): F24H9/20F24H3/02F23D14/02
CPCF24H9/2085F24D2200/04F23D14/02F24H3/025F23D14/04F23D14/64F23D14/70F23D2203/1015F23D2203/102F23D2900/14064
InventorO'DONNELL, MICHAEL J.MARICIC, RICHARD
OwnerBECKETT THERMAL SOLUTIONS