Method of assembling pilot burner assembly

Patent metadata

Field	Value
Publication number	US-10488044-B2
Application number	US-201815870078-A
Country	US
Kind code	B2
Filing date	Jan 12, 2018
Priority date	Apr 30, 2014
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A method of assembling a pilot burner assembly for use with a gas fired appliance includes inserting a retention element of a gas supply line through a slot defined by a retaining ledge of a second bracket plate, rotating an outlet orifice of the gas supply line such that the second retention element engages the retaining ledge, and inserting a pilot guard through first and second pilot guard apertures defined by respective first and second bracket plates such that a retention element of the pilot guard cooperatively engages the retention element of the gas supply line to maintain a connection between the pilot guard and the gas supply line.

First claim

What is claimed is:

1. A method of assembling a pilot burner assembly for use with a gas fired appliance including a main burner and a gas supply line including an outlet orifice, the pilot burner assembly including a bracket and a pilot guard, the bracket including a first plate and a second plate, each of the first and second plates having a pilot guard aperture defined therein, the bracket second plate including a retaining ledge extending into the pilot guard aperture and at least partially defining a slot, the pilot guard having a first end defining a gas inlet and a second end defining a gas outlet, the pilot guard including an elongate body and a pilot hood disposed at the second end, the pilot guard further including a first retention element, and the gas supply line further including a second retention element, the method comprising:
inserting the second retention element through the slot defined by the retaining ledge;
rotating the outlet orifice such that the second retention element engages the retaining ledge; and
inserting the pilot guard through each pilot guard aperture such that the first retention element cooperatively engages the second retention element to maintain a connection between the pilot guard and the gas supply line.

2. The method of claim 1 , wherein the first retention element includes a plurality of locking fingers extending from a bottom edge of the elongate body of the pilot guard and defining a pilot guard slot, wherein inserting the pilot guard through each pilot guard aperture includes inserting the pilot guard through each pilot guard aperture such that one of the plurality of locking fingers extends through the slot defined by the retaining ledge, and both of the retaining ledge and the second retention element are received within the pilot guard slot and cooperatively engage the plurality of locking fingers to maintain a connection between the pilot guard and the gas supply line.

3. The method of claim 2 , wherein the bracket second plate further includes a locking protrusion extending in to the pilot guard aperture defined by the second plate, wherein inserting the pilot guard through each pilot guard aperture includes inserting the pilot guard through the pilot guard aperture defined by the second plate such that the plurality of locking fingers engage the locking protrusion to inhibit rotation of the pilot guard.

4. The method of claim 1 , wherein the second retention element includes a retainer extending radially outward from the outlet orifice, the method further comprising rotating the outlet orifice by less than 180 degrees such that the retainer engages the retaining ledge.

5. The method of claim 1 , wherein the pilot guard further includes a depressible retention tab configured to permit the pilot guard to be inserted into the bracket in a first direction, and inhibit movement of the pilot guard in a second direction opposite the first direction, wherein inserting the pilot guard comprises inserting the pilot guard in the first direction until the retention tab traverses the pilot guard aperture defined in the second plate.

6. The method of claim 1 , wherein the pilot guard includes an air inlet, separate from the gas inlet, for receiving ambient air therethrough, the method further comprising positioning the outlet orifice relative to the air inlet such that gas flowing through the pilot guard creates a Venturi effect within the pilot guard to facilitate mixing of gas and air within the pilot guard.

7. The method of claim 1 , wherein the pilot hood includes an angled sparking tip, the method further comprising:
connecting an igniter to the bracket; and
orienting the pilot guard relative to the igniter such that the angled sparking tip concentrates an electric field induced by the igniter within the pilot hood at the angled sparking tip.

8. The method of claim 1 , further comprising connecting a thermo-electric device to the bracket such that the pilot hood directs a pilot flame towards the thermo-electric device and the thermo-electric device generates electrical energy in response to the pilot flame.

Assignees

• Emerson Electric Co

Inventors

• Prichard James B
• Stark Mark H
• Mendoza Soraya C
• Olague Arturo U
• Viesca Jorge D
• Haefner John S

Classifications

• B23P19/04

  for assembling or disassembling parts · CPC title

• F23Q9/14 Primary

  using electric means, e.g. by light-sensitive elements · CPC title

• Y10T29/4935

  Heat exchanger or boiler making · CPC title

• F24H1/186

  using fluid fuel · CPC title

• F23D14/26

  with provision for a retention flame (pilot flame igniters F23Q9/00) · CPC title