Gas fueled water heater appliance having a flame arrestor

Patent metadata

Field	Value
Publication number	US-10746398-B2
Application number	US-201715679196-A
Country	US
Kind code	B2
Filing date	Aug 17, 2017
Priority date	Aug 17, 2017
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

A gas fueled water heater appliance having a flame arrestor is provided herein. The gas fueled water heater appliance may include a tank for storage of water for heater, a chamber wall, a gas burner, and the flame arrestor. The gas burner may be positioned adjacent to the tank and within a combustion chamber. The flame arrestor may be positioned beneath the gas burner. The flame arrestor may include a bottom plate and a top plate. The bottom plate may define a non-permeable region and a perforated region. The perforated region may include a plurality of apertures extending through the top plate. The top plate may be positioned above the bottom plate and may define a non-permeable region and a perforated region. The perforated region may include a plurality of apertures extending through the top plate.

First claim

What is claimed is:

1. A gas fueled water heater, comprising:
a tank for storage of water for heating;
a chamber wall defining a combustion chamber;
a gas burner positioned adjacent to the tank and within the combustion chamber to heat the water in the tank; and
a flame arrestor positioned beneath the gas burner along a vertical direction, the flame arrestor comprising
a bottom plate comprising an upper surface and a lower surface, the bottom plate defining a non-permeable region and a perforated region, the perforated region comprising a plurality of apertures extending through the bottom plate from the upper surface to the lower surface,
a top plate positioned above the bottom plate along the vertical direction, the top plate comprising an upper surface and a lower surface, the top plate defining a non-permeable region and a perforated region, the perforated region comprising a plurality of apertures extending through the top plate from the upper surface to the lower surface, and
a baffle positioned between the top plate and the bottom plate along the vertical direction,
wherein the perforated region of the bottom plate is axially offset from the perforated region of the top plate,
wherein one or more apertures of the plurality of apertures of the top plate is defined at a diameter greater than five hundredths of an inch, and
wherein a spacing of solid material is provided between adjacent apertures of the plurality of apertures of the top plate, wherein the spacing is less than the one or more apertures of the plurality of apertures.

2. The gas fueled water heater of claim 1 , wherein the flame arrestor defines a plurality of discrete air channels between the bottom plate and the top plate along the vertical direction.

3. The gas fueled water heater of claim 1 , wherein a portion of the non-permeable region of the bottom plate axially overlaps a portion of the non-permeable region of the top plate.

4. The gas fueled water heater of claim 1 , wherein the baffle axially overlaps a portion of the perforated region of the top plate or the bottom plate.

5. The gas fueled water heater of claim 1 , wherein the baffle axially overlaps a portion of the perforated region of the top plate, and wherein the baffle axially overlaps a portion of the perforated region of the bottom plate.

6. The gas fueled water heater of claim 1 , wherein one or more apertures of the plurality of apertures of the bottom plate is defined at a diameter greater than five hundredths of an inch.

7. A gas fueled water heater, comprising:
a tank for storage of water for heating;
a chamber wall defining a combustion chamber;
a gas burner positioned adjacent to the tank and within the combustion chamber to heat the water in the tank; and
a flame arrestor positioned beneath the gas burner along a vertical direction, the flame arrestor comprising
a bottom plate comprising an upper surface and a lower surface, the bottom plate defining a non-permeable region and a perforated region, the perforated region comprising a plurality of apertures extending through the top plate from the upper surface to the lower surface,
a top plate positioned above the bottom plate along the vertical direction, the top plate comprising an upper surface and a lower surface, the top plate defining a non-permeable region and a perforated region, the perforated region comprising a plurality of apertures extending through the top plate from the upper surface to the lower surface, and
a baffle joined in fixed attachment to the bottom plate and positioned between the lower surface of the top plate and the upper surface of the bottom plate,
wherein the flame arrestor defines a plurality of discrete air channels between the bottom plate and the top plate along the vertical direction, and wherein the baffle extends through each of the plurality of discrete air channels,
wherein the baffle axially overlaps a portion of the perforated region of the top plate, and
wherein the baffle axially overlaps a portion of the perforated region of the bottom plate.

8. The gas fueled water heater of claim 7 , wherein a portion of the non-permeable region of the bottom plate axially overlaps a portion of the non-permeable region of the top plate.

9. The gas fueled water heater of claim 7 , wherein the perforated region of the bottom plate is axially offset from the perforated region of the top plate relative to the vertical direction.

10. The gas fueled water heater of claim 7 , wherein one or more apertures of the plurality of apertures of the top plate is defined at a diameter greater than five hundredths of an inch.

11. The gas fueled water heater of claim 10 , wherein one or more apertures of the plurality of apertures of the bottom plate is defined at a diameter greater than five hundredths of an inch.

12. The gas fueled water heater of claim 7 , wherein one or more apertures of the plurality of apertures of the top plate is defined at a diameter greater than five hundredths of an inch.

13. A gas fueled water heater, comprising:
a tank for storage of water for heating;
a chamber wall defining a combustion chamber;
a gas burner positioned adjacent to the tank and within the combustion chamber to heat the water in the tank; and
a flame arrestor positioned beneath the gas burner along a vertical direction, the flame arrestor comprising
a bottom plate comprising an upper surface and a lower surface, the bottom plate defining a non-permeable region and a perforated region, the perforated region comprising a plurality of apertures extending through the top plate from the upper surface to the lower surface,
a top plate positioned above the bottom plate along the vertical direction, the top plate comprising an upper surface and a lower surface, the top plate defining a non-permeable region and a perforated region, the perforated region comprising a plurality of apertures extending through the top plate from the upper surface to the lower surface, and
a baffle joined in fixed attachment to the bottom plate and positioned between the lower surface of the top plate and the upper surface of the bottom plate,
wherein one or more apertures of the plurality of apertures of the top plate is defined at a diameter greater than five hundredths of an inch,
wherein a spacing of solid material is provided between adjacent apertures of the plurality of apertures of the top plate, wherein the spacing is less than the one or more apertures of the plurality of apertures,
wherein the baffle axially overlaps a portion of the perforated region of the top plate, and
wherein the baffle axially overlaps a portion of the perforated region of the bottom plate.

14. The gas fueled water heater of claim 13 , wherein one or more apertures of the plurality of apertures of the bottom plate is defined at a diameter greater than five hundredths of an inch.

Assignees

• Haier Us Appliance Solutions Inc

Inventors

• Ward Shaun Michael

Classifications

• F23D2209/10

  Flame flashback · CPC title

• F23D2203/102

  using perforated plates · CPC title

• F24H1/18

  Water-storage heaters · CPC title

• F23D14/82 Primary

  Preventing flashback or blowback · CPC title

• F23D14/70

  Baffles or like flow-disturbing devices · CPC title