Furnace inducer choke and a gas furnace employing the same

Patent metadata

Field	Value
Publication number	US-10082287-B2
Application number	US-201414587491-A
Country	US
Kind code	B2
Filing date	Dec 31, 2014
Priority date	Dec 31, 2014
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

A furnace inducer choke and a gas furnace employing the furnace inducer choke. In one embodiment, the furnace inducer choke includes: (1) a choke body configured to engage a furnace inducer blower, the choke body having an opening extending entirely therethrough to limit an amount of combustion air entering a furnace that the furnace inducer blower is attached, and (2) a tab protruding from the choke body a distance sufficient to identify the opening when the choke body and furnace inducer blower are installed in the furnace.

First claim

What is claimed is:

1. A furnace inducer choke, comprising:
a choke body having a major surface, wherein the choke body is configured to engage a furnace inducer blower, the choke body having an opening extending entirely therethrough to limit an amount of combustion air entering a gas furnace to which the furnace inducer blower is attached;
a tab extending from the choke body at an acute angle, wherein the tab comprises a base end and an attachment end, wherein the base end is connected substantially perpendicular to an edge of a perimeter of the major surface while also being substantially parallel to the major surface of the choke body; and
a mounting feature connected to the attachment end of the tab, the mounting feature being positioned spaced away from the choke body, wherein the tab protrudes from the choke body at a distance sufficient to identify the opening when the choke body and furnace inducer blower are installed in a gas furnace, thereby enabling the mounting feature to properly position the furnace inducer blower during installation in the gas furnace.

2. The furnace inducer choke of claim 1 , wherein the major surface defines a perimeter surface, and further wherein the tab extends in a direction parallel to the major surface.

3. The furnace inducer choke of claim 2 , wherein the perimeter surface comprises a circle.

4. The furnace inducer choke of claim 1 , wherein the tab is color-coded to identify a size of the opening.

5. The furnace inducer choke of claim 1 , wherein the mounting feature is a clip configured to engage the gas furnace during the installation.

6. A gas furnace, comprising:
a housing;
a heat exchanger assembly located within the housing that includes one or more spaced apart primary heating chambers;
a furnace inducer blower located within the housing and coupled to the heat exchanger assembly, the furnace inducer blower configured to enhance a mixing of combustion air with fuel in order to better facilitate a combustion process within the heat exchanger assembly;
a furnace inducer choke coupled to the furnace inducer blower, comprising:
a choke body having a major surface, wherein the choke body is configured to engage the furnace inducer blower, the choke body having an opening extending entirely therethrough to limit an amount of the combustion air entering the heat exchanger assembly;
a tab extending from the choke body at an acute angle, wherein the tab comprises a base end and an attachment end, wherein the base end is connected substantially perpendicular to an edge of a perimeter of the major surface while also being substantially parallel to the major surface of the choke body; and
a mounting feature connected to the attachment end of the tab, the mounting feature being positioned spaced away from the choke body,

wherein the tab protrudes from the choke body at a distance relative to the mounting feature sufficient to identify the opening when the choke body and furnace inducer blower are coupled to the heat exchanger assembly, thereby enabling the mounting feature to properly position the furnace inducer blower during installation in the gas furnace; and
a blower located within the housing, the blower configured to force air across the heat exchanger assembly for heating thereof.

7. The gas furnace of claim 6 , wherein the major surface defines a perimeter surface, and further wherein the tab extends in a direction parallel to the major surface.

8. The gas furnace of claim 7 , wherein the perimeter surface comprises a circle.

9. The gas furnace of claim 6 , wherein the tab is color-coded to identify a size of the opening.

10. The gas furnace of claim 6 , wherein the mounting feature is a clip configured to engage the gas furnace during the installation.

11. A furnace inducer choke, comprising:
a choke body having a major surface, wherein the choke body is configured to engage a furnace inducer blower, the choke body having an opening extending entirely therethrough to limit an amount of combustion air entering a gas furnace that the furnace inducer blower is attached;
a tab extending from the choke body at an acute angle, wherein the tab comprises a base end and an attachment end, wherein the base end is connected substantially perpendicular to an edge of a perimeter of the major surface while also being substantially parallel to the major surface of the choke body; and
a mounting feature connected to the attachment end of the tab, the mounting feature being positioned spaced away from the choke body, wherein the tab protrudes from the choke body at a distance sufficient to identify the opening when the choke body and the furnace inducer blower are installed in a gas furnace, thereby enabling the mounting feature to properly attach to a feature of a manifold of the furnace inducer blower and thereby assist in coupling a draft inducing exhaust fan to the manifold.

12. The furnace inducer choke of claim 11 , wherein the mounting feature is a clip configured to engage the gas furnace during the installation.

Assignees

• Lennox Ind Inc

Inventors

• Gedcke Jeff
• Austin Lawrence

Classifications

• F24D5/00

  Hot-air central heating systems (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00; air conditioning F24F); Exhaust gas central heating systems · CPC title

• F23L13/02

  pivoted about a single axis but having not other movement (formed as linked slats each pivoted about an axis F23L13/08) · CPC title

• F23C2200/00

  Combustion techniques for fluent fuel · CPC title

• F23C7/008 Primary

  Flow control devices (F23C7/006 takes precedence) · CPC title

• F24H3/087

  using fluid fuel · CPC title